If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Rate Thread | Display Modes |
#46
|
|||
|
|||
Tablet battery question
On 3/13/2014, Metspitzer posted:
On Thu, 13 Mar 2014 16:58:11 -0700, Gene E. Bloch wrote: On 3/13/2014, Metspitzer posted: On Thu, 13 Mar 2014 14:19:06 -0500, BillW50 wrote: On 3/13/2014 1:46 PM, Metspitzer wrote: On Thu, 13 Mar 2014 13:25:53 -0500, BillW50 wrote: On 3/13/2014 1:03 PM, Metspitzer wrote: On Thu, 13 Mar 2014 17:01:59 +0000, Roger Mills wrote: On 12/03/2014 22:04, Metspitzer wrote: I only use my tablet about 15 min at night before bed. If I put it in sleep mode, it will remember the book I am reading and the page I am on, but it uses about 5% of the battery. If I turn it off completely, it doesn't seem to use any battery at all, but I have to reselect the book I am reading (It does remember the page number). (I know that the battery will drain anyway but it takes a long time) I am pretty sure the answer to this question is because it cost more, but couldn't laptops and tablets store "place marks" on the same technology as thumb drives? I also understand the programs that are much more complicated than a book reader would take much more storage, but I think in the case of a bookmark, this would be pretty cheap. Turn off everything you don't need overnight which might consume battery energy - WiFi, Bluetooth, GPS (if it's got one). With those things turned on, it will be frequently looking for updates to Apps, looking for other Bluetooth devices to pair with, and trying to work out where in the world it is. Others have mentioned Airplane mode - which will turn off at least some of those things. If it doesn't turn them *all* off, go into settings and do it manually. [A better newsgroup in which to ask would have been comp.mobile.android] Thanks for the newgroup link. There are so many dead news groups I have quit trying to find new newsgroups. That one seems active. You know while I knew and have a great deal about Ni-Cads, NiMH, Lithium, and lead acid batteries than I care to really know. And I can make Lithium batteries last over 10 years easy. Although the last few years I have realized just making them last as long as you can might be counter productive. So now I am weighing how long vs. how much use you get out of them. For example, making batteries last longer than most people would believe possible isn't very useful if you never actually use the battery for power anyway. And who cares how long it lasts, really? Now your tablet most likely use a Lithium battery. And say the worst case that I have experience with is using one and draining it down to 0% each day. I would expect getting about 6 months out of it before it becomes worthless. Most people are not that hard on them and of course would last much longer. Now you are worried about losing 5% in standby mode. I dunno, per day is my guess. Well you should easily beat that 6 month before it is worthless. Although you should make two to four years easy at that rate. Now I don't know what a replacement battery for yours cost. But if it is like 10 to 20 bucks, well I think it is well worth it, don't you? The main reason I want to save battery life is so I don't have to screw with charging it. BTW I do turn off WiFi, Bluetooth, GPS. They sell battery packs that replaces changing of devices that use USB to change with. That would keep it recharged if not near a charger. These battery packs can be recharged. I don't know if yours can recharge from USB, some do and some doesn't. I have one actually. It is not too handy to use in bed. I do plan on using it next time I am in the hospital. I also carry it to doctor's visits. http://www.amazon.com/Maxboost-Elect.../dp/B00C13YSIO Tempting (very tempting!), but we have light weight units from Motorola that are sufficient to make a phone call or two in an em emergency. I did have two doctors visits one day that were spaced a long time apart and different buildings (different parking decks). Since the time between visits was so long, I went shopping for a little while and then parked in a McDonalds parking lot to use their WiFi. (and the battery pack) I sat in the parking lot for around 2 hours. I did manage to drain my car battery listing to the radio. Lucky I also keep one of these in the trunk. http://www.ebay.com/itm/Black-Decker...-/201048453465 Here's a thought: you can get a USB charger that plugs into your car's power outlet[1] that can power and charge your tablet (but be careful about the car battery, as you said). And the car starter unit has a power outlet too, so you can use it with the USB item to charge your tablet (but don't use too much of the emergency energy either). One example out of 180,000 hits[2] on eBay: http://www.ebay.com/itm/Car-Charger-...item43c2ee5e49 AKA http://tinyurl.com/l3bojom [1] What used to be called the cigarette lighter or cigar lighter plug [2] I didn't check all 180,000 to make sure they're the right stuff. Many come with cables, usually for Apple products, but they work with regular micro-USB cables too. When I was looking at a car for my nephew in 2010 the sticker said the car had an mp3 player. I mistakenly thought mp3 player was a radio feature that would play music from a thumb drive. I asked the dealer where the opening was to plug it in when we were test driving the car. He said.........it is in the glove box or the trunk somewhere. I bought the car. We are still looking for the place to plug in the thumb drive. He got me didn't he? There doesn't seem to be a need for a car cigarette lighter any more, but playing mp3s and charging phones should make a couple of USB slots a standard feature. Maybe the dealers are aware that it kills the battery. AFAIK, all cars come with a power socket - or two or three. On casual inspection it looks like a cigarette lighter socket, but it isn't. It doesn't have the thermostatic catch that would hold a lighter in the socket. They are used by so many accessories that it would be cruel and unusual punishment, hence unconstitutional, to leave one out of a car. Did you search the manual or the carmaker's website for the USB3 socket's location, or for how to play an MP3? BTW, many car websites have PDF manuals available for download. They can be easier to search than a printed manual :-) -- Gene E. Bloch (Stumbling Bloch) |
Ads |
#47
|
|||
|
|||
Tablet battery question
On 3/13/2014, SC Tom posted:
"Gene E. Bloch" wrote in message ... On 3/13/2014, Metspitzer posted: On Thu, 13 Mar 2014 14:19:06 -0500, BillW50 wrote: On 3/13/2014 1:46 PM, Metspitzer wrote: On Thu, 13 Mar 2014 13:25:53 -0500, BillW50 wrote: On 3/13/2014 1:03 PM, Metspitzer wrote: On Thu, 13 Mar 2014 17:01:59 +0000, Roger Mills wrote: On 12/03/2014 22:04, Metspitzer wrote: I only use my tablet about 15 min at night before bed. If I put it in sleep mode, it will remember the book I am reading and the page I am on, but it uses about 5% of the battery. If I turn it off completely, it doesn't seem to use any battery at all, but I have to reselect the book I am reading (It does remember the page number). (I know that the battery will drain anyway but it takes a long time) I am pretty sure the answer to this question is because it cost more, but couldn't laptops and tablets store "place marks" on the same technology as thumb drives? I also understand the programs that are much more complicated than a book reader would take much more storage, but I think in the case of a bookmark, this would be pretty cheap. Turn off everything you don't need overnight which might consume battery energy - WiFi, Bluetooth, GPS (if it's got one). With those things turned on, it will be frequently looking for updates to Apps, looking for other Bluetooth devices to pair with, and trying to work out where in the world it is. Others have mentioned Airplane mode - which will turn off at least some of those things. If it doesn't turn them *all* off, go into settings and do it manually. [A better newsgroup in which to ask would have been comp.mobile.android] Thanks for the newgroup link. There are so many dead news groups I have quit trying to find new newsgroups. That one seems active. You know while I knew and have a great deal about Ni-Cads, NiMH, Lithium, and lead acid batteries than I care to really know. And I can make Lithium batteries last over 10 years easy. Although the last few years I have realized just making them last as long as you can might be counter productive. So now I am weighing how long vs. how much use you get out of them. For example, making batteries last longer than most people would believe possible isn't very useful if you never actually use the battery for power anyway. And who cares how long it lasts, really? Now your tablet most likely use a Lithium battery. And say the worst case that I have experience with is using one and draining it down to 0% each day. I would expect getting about 6 months out of it before it becomes worthless. Most people are not that hard on them and of course would last much longer. Now you are worried about losing 5% in standby mode. I dunno, per day is my guess. Well you should easily beat that 6 month before it is worthless. Although you should make two to four years easy at that rate. Now I don't know what a replacement battery for yours cost. But if it is like 10 to 20 bucks, well I think it is well worth it, don't you? The main reason I want to save battery life is so I don't have to screw with charging it. BTW I do turn off WiFi, Bluetooth, GPS. They sell battery packs that replaces changing of devices that use USB to change with. That would keep it recharged if not near a charger. These battery packs can be recharged. I don't know if yours can recharge from USB, some do and some doesn't. I have one actually. It is not too handy to use in bed. I do plan on using it next time I am in the hospital. I also carry it to doctor's visits. http://www.amazon.com/Maxboost-Elect.../dp/B00C13YSIO Tempting (very tempting!), but we have light weight units from Motorola that are sufficient to make a phone call or two in an em emergency. I did have two doctors visits one day that were spaced a long time apart and different buildings (different parking decks). Since the time between visits was so long, I went shopping for a little while and then parked in a McDonalds parking lot to use their WiFi. (and the battery pack) I sat in the parking lot for around 2 hours. I did manage to drain my car battery listing to the radio. Lucky I also keep one of these in the trunk. http://www.ebay.com/itm/Black-Decker...-/201048453465 Here's a thought: you can get a USB charger that plugs into your car's power outlet[1] that can power and charge your tablet (but be careful about the car battery, as you said). And the car starter unit has a power outlet too, so you can use it with the USB item to charge your tablet (but don't use too much of the emergency energy either). One example out of 180,000 hits[2] on eBay: http://www.ebay.com/itm/Car-Charger-...item43c2ee5e49 AKA http://tinyurl.com/l3bojom [1] What used to be called the cigarette lighter or cigar lighter plug [2] I didn't check all 180,000 to make sure they're the right stuff. Many come with cables, usually for Apple products, but they work with regular micro-USB cables too. [1] isn't totally accurate. Power points in most vehicles are fused at 15A., while a cigar lighter is fused at 40A. While the sockets may be the same, the load-bearing certainly isn't :-) A rental I used a few years ago had both; the power point had a cover over it, I guess to prevent accidentally putting the lighter (or small inquiring fingers) in it. Well, I wasn't planning on writing an essay :-) I did wonder about the fuse, actually, but I thought the cigarette lighter ones used to be 10A as well. Oops - I said 10A by habit, because that's stuck in my brain as the typical power outlet fuse. Anyway, I just checked: my car has 15A, so you win :-) But I did end up writing an essay anyway a few minutes ago, in response to another post by Metspitzer, where I pointed out to him the thermostatic clip, which prevents the power outlet from powering a cigarette lighter. Maybe the cover in the rental car (and in most that I've noticed) are to prevent power from leaking out of the plug? I hate power dribbles on the floor. -- Gene E. Bloch (Stumbling Bloch) |
#48
|
|||
|
|||
Tablet battery question
On 3/14/2014, Gene E. Bloch posted:
I pointed out to him the thermostatic clip I pointed out to him the *lack of a* thermostatic clip -- Gene E. Bloch (Stumbling Bloch) |
#49
|
|||
|
|||
Tablet battery question
"Paul" wrote in message ... SC Tom wrote: "Stan Brown" wrote in message t... On Thu, 13 Mar 2014 16:58:11 -0700, Gene E. Bloch wrote: On 3/13/2014, Metspitzer posted: http://www.amazon.com/Maxboost-Elect.../dp/B00C13YSIO Tempting (very tempting!), but we have light weight units from Motorola that are sufficient to make a phone call or two in an em emergency. I looked at this, and apparently the company has quality control problems. Several reviewers mentioned getting a bad unit, though the company did replace it. Also the battery capacity is 8800 mAh, not 10000 as stated. (Someone opened a unit up and looked at the battery pack.) I think I want to get an external battery pack for my Kindle Fire HDX 7", but I don't think this is it. I bought this bad boy for use with my 10" tablet: http://www.amazon.com/gp/product/B00FDK2G2C/ref=oh_details_o09_s00_i00?ie=UTF8&psc=1 I had a 12000mAH one before, but it wouldn't keep up. All it did was slow down the rate of discharge of the internal battery. With this one, though, the battery will either stay steady when using the tablet heavily (like Real Racing 3 and Words with Friends running at the same time), or it will be slowly charged while doing email or crossword puzzles. With the tablet asleep, this pack will charge it in about an hour if the tablet's battery is ~25%. I also purchased a 5' "charge only" USB cable, and that actually worked better than a regular USB data cable. The cable included with the battery pack works fine, but it's only 28" long; with the 5' one, I can leave the pack on the table or nightstand and still be able to sit in the chair to use the tablet without the battery being in my lap, or lie in bed and read before going to sleep. The only warning I'd have about those things, is don't leave it "baking on your car seat". While it is portable, and you might be tempted to take it in the car, you might want to remove it from the car if leaving the car in the hot sun. Good advice for anything, really, in the South Carolina summer sun :-) Had a workmate a few years back that left his Zippo lighter on the corner of the dashboard. The heat of the sun caused all of the fluid to leak out, soak into the plastic, and ruin it. The inside of the lighter actually pushed out about a 1/4" during the process. And some stupid people leave their kids or pets in the car while they go shopping :-( Unbelievable. -- SC Tom |
#50
|
|||
|
|||
Tablet battery question
"Gene E. Bloch" wrote in message ... On 3/13/2014, SC Tom posted: "Gene E. Bloch" wrote in message ... On 3/13/2014, Metspitzer posted: On Thu, 13 Mar 2014 14:19:06 -0500, BillW50 wrote: On 3/13/2014 1:46 PM, Metspitzer wrote: On Thu, 13 Mar 2014 13:25:53 -0500, BillW50 wrote: On 3/13/2014 1:03 PM, Metspitzer wrote: On Thu, 13 Mar 2014 17:01:59 +0000, Roger Mills wrote: On 12/03/2014 22:04, Metspitzer wrote: I only use my tablet about 15 min at night before bed. If I put it in sleep mode, it will remember the book I am reading and the page I am on, but it uses about 5% of the battery. If I turn it off completely, it doesn't seem to use any battery at all, but I have to reselect the book I am reading (It does remember the page number). (I know that the battery will drain anyway but it takes a long time) I am pretty sure the answer to this question is because it cost more, but couldn't laptops and tablets store "place marks" on the same technology as thumb drives? I also understand the programs that are much more complicated than a book reader would take much more storage, but I think in the case of a bookmark, this would be pretty cheap. Turn off everything you don't need overnight which might consume battery energy - WiFi, Bluetooth, GPS (if it's got one). With those things turned on, it will be frequently looking for updates to Apps, looking for other Bluetooth devices to pair with, and trying to work out where in the world it is. Others have mentioned Airplane mode - which will turn off at least some of those things. If it doesn't turn them *all* off, go into settings and do it manually. [A better newsgroup in which to ask would have been comp.mobile.android] Thanks for the newgroup link. There are so many dead news groups I have quit trying to find new newsgroups. That one seems active. You know while I knew and have a great deal about Ni-Cads, NiMH, Lithium, and lead acid batteries than I care to really know. And I can make Lithium batteries last over 10 years easy. Although the last few years I have realized just making them last as long as you can might be counter productive. So now I am weighing how long vs. how much use you get out of them. For example, making batteries last longer than most people would believe possible isn't very useful if you never actually use the battery for power anyway. And who cares how long it lasts, really? Now your tablet most likely use a Lithium battery. And say the worst case that I have experience with is using one and draining it down to 0% each day. I would expect getting about 6 months out of it before it becomes worthless. Most people are not that hard on them and of course would last much longer. Now you are worried about losing 5% in standby mode. I dunno, per day is my guess. Well you should easily beat that 6 month before it is worthless. Although you should make two to four years easy at that rate. Now I don't know what a replacement battery for yours cost. But if it is like 10 to 20 bucks, well I think it is well worth it, don't you? The main reason I want to save battery life is so I don't have to screw with charging it. BTW I do turn off WiFi, Bluetooth, GPS. They sell battery packs that replaces changing of devices that use USB to change with. That would keep it recharged if not near a charger. These battery packs can be recharged. I don't know if yours can recharge from USB, some do and some doesn't. I have one actually. It is not too handy to use in bed. I do plan on using it next time I am in the hospital. I also carry it to doctor's visits. http://www.amazon.com/Maxboost-Elect.../dp/B00C13YSIO Tempting (very tempting!), but we have light weight units from Motorola that are sufficient to make a phone call or two in an em emergency. I did have two doctors visits one day that were spaced a long time apart and different buildings (different parking decks). Since the time between visits was so long, I went shopping for a little while and then parked in a McDonalds parking lot to use their WiFi. (and the battery pack) I sat in the parking lot for around 2 hours. I did manage to drain my car battery listing to the radio. Lucky I also keep one of these in the trunk. http://www.ebay.com/itm/Black-Decker...-/201048453465 Here's a thought: you can get a USB charger that plugs into your car's power outlet[1] that can power and charge your tablet (but be careful about the car battery, as you said). And the car starter unit has a power outlet too, so you can use it with the USB item to charge your tablet (but don't use too much of the emergency energy either). One example out of 180,000 hits[2] on eBay: http://www.ebay.com/itm/Car-Charger-...item43c2ee5e49 AKA http://tinyurl.com/l3bojom [1] What used to be called the cigarette lighter or cigar lighter plug [2] I didn't check all 180,000 to make sure they're the right stuff. Many come with cables, usually for Apple products, but they work with regular micro-USB cables too. [1] isn't totally accurate. Power points in most vehicles are fused at 15A., while a cigar lighter is fused at 40A. While the sockets may be the same, the load-bearing certainly isn't :-) A rental I used a few years ago had both; the power point had a cover over it, I guess to prevent accidentally putting the lighter (or small inquiring fingers) in it. Well, I wasn't planning on writing an essay :-) I did wonder about the fuse, actually, but I thought the cigarette lighter ones used to be 10A as well. Oops - I said 10A by habit, because that's stuck in my brain as the typical power outlet fuse. Anyway, I just checked: my car has 15A, so you win :-) But I did end up writing an essay anyway a few minutes ago, in response to another post by Metspitzer, where I pointed out to him the thermostatic clip, which prevents the power outlet from powering a cigarette lighter. Maybe the cover in the rental car (and in most that I've noticed) are to prevent power from leaking out of the plug? I hate power dribbles on the floor. LOL! I hate *any* kind of dribble on the floor :-) -- SC Tom |
#51
|
|||
|
|||
Tablet battery question
On Fri, 14 Mar 2014 08:20:02 -0400, SC Tom wrote:
"Stan Brown" wrote in message t... I think I want to get an external battery pack for my Kindle Fire HDX 7", but I don't think this is it. I bought this bad boy for use with my 10" tablet: http://www.amazon.com/gp/product/B00FDK2G2C/ref=oh_details_o09_s00_i00?ie=UTF8&psc=1 Oh my - that looks like it can do the job. I read all the Q&As -- kind of frustrating, because often the answers to the same question contradicted each other. For example, some said you can charge it while using it and others said that shortens the life of the unit. From the pictures, it looks like you charge it through the same port that you ten use to suck charge into the tablet or other device; is that right? And the pictures didn't show any way to plug it into the wall. I did see a USB cable -- do we just plug it into a USB wall connector, like this one http://www.amazon.com/gp/product/B006GWO5WK (That came with my KF in early December -- I was amazed to read that they're now sold separately and no longer included.) One more question, as long as I'm asking: There's no danger of frying a device with these external chargers, is there? I mean, it's just a matter of a device charging faster or slower based on the power output of the external charger, is that right? -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://OakRoadSystems.com Shikata ga nai... |
#52
|
|||
|
|||
Tablet battery question
On Fri, 14 Mar 2014 13:30:00 -0700, Gene E. Bloch wrote:
On 3/13/2014, Metspitzer posted: Really you would think that even toasters would come standard with a couple of USB slots today. True enough... We should wait and see what the Google toaster or the Nest toaster looks like... A couple of years ago, in the Christmas season, the Onion sold gag gift boxes. By that I don't mean boxes that looked like wrapping paper, but boxes that looked like you would see on store shelves. One was a USB toaster. I say "sold", but I didn't actually try to buy one. I think the (presumably empty) boxes were about $10 each; anyway they were more than I wanted to pay for a one-shot gag. Now, years later, I wonder if there may not have been a joke within a joke, and if I had tried to buy the shopping cart would have been a joke mockup also. -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://OakRoadSystems.com Shikata ga nai... |
#53
|
|||
|
|||
Tablet battery question
On Fri, 14 Mar 2014 13:36:49 -0700, Gene E. Bloch wrote:
BTW, many car websites have PDF manuals available for download. They can be easier to search than a printed manual :-) My 2006 Prius came with several hundred pages' worth of manual. A couple of months ago I had the idea to download the PDF, exactly for easier searching as you suggest. Toyota didn't have it on one PDF, but one PDF per chapter. Kind of defeats the purpose if I have to search eight or nine files! -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://OakRoadSystems.com Shikata ga nai... |
#54
|
|||
|
|||
Tablet battery question
"Stan Brown" wrote in message t... On Fri, 14 Mar 2014 08:20:02 -0400, SC Tom wrote: "Stan Brown" wrote in message t... I think I want to get an external battery pack for my Kindle Fire HDX 7", but I don't think this is it. I bought this bad boy for use with my 10" tablet: http://www.amazon.com/gp/product/B00FDK2G2C/ref=oh_details_o09_s00_i00?ie=UTF8&psc=1 Oh my - that looks like it can do the job. I read all the Q&As -- kind of frustrating, because often the answers to the same question contradicted each other. For example, some said you can charge it while using it and others said that shortens the life of the unit. From the pictures, it looks like you charge it through the same port that you ten use to suck charge into the tablet or other device; is that right? And the pictures didn't show any way to plug it into the wall. I did see a USB cable -- do we just plug it into a USB wall connector, like this one http://www.amazon.com/gp/product/B006GWO5WK (That came with my KF in early December -- I was amazed to read that they're now sold separately and no longer included.) One more question, as long as I'm asking: There's no danger of frying a device with these external chargers, is there? I mean, it's just a matter of a device charging faster or slower based on the power output of the external charger, is that right? It's charged through the µUSB port on the side (you can see it on the 5th picture down); the two USB ports on the end are for 1A and 2.1A output. It comes with two USB cables- one ~28" long and the other ~6". Each cable has a barrel connector that allows the use of the adapters that come with it. I use my Asus 2.0A charger to recharge the battery pack- no charger is included with it. The Amazon one is 1.8A, so it would probably take a little longer than my 2.0A charger. Even so, if it's down to about 25% or less, it takes overnight to recharge it fully. I've never tried charging it while using it to charge my Asus. I have enough chargers lying around that I can do each separately :-) I would think that if it was an "intelligent" battery pack, and the device being charged by the battery pack drew less current than the battery pack being charged, then the charging of the battery pack would take less precedence over the device being charged, and both would be charged. But if the device drew more than the battery pack, the battery pack would basically be bypassed while the device was being charged. Does that make sense, in a roundabout, convoluted way? The speed of the tablet/phone being recharged depends more on its capabilities than on the device charging it. If the tablet will only draw ..7A max while charging, it won't make any difference if you use the 1A or the 2.1A port. If the tablet draws 1.7A while charging, it will charge faster on the 2.1A port than it will on the 1A one. You can use a PCs USB port to charge a tablet or a phone, but with its max 500mA (.5A) output, it'll take a lot longer to finish than using the battery pack or a wall charger. I have never heard of a device being fried from using a battery pack, although I guess it's possible, just like it's possible for a wall charger to malfunction and fry your tablet, or a PC PSU to short out and fry the MB. When Murphy's Law is in effect, anything is possible :-) -- SC Tom |
#55
|
|||
|
|||
Tablet battery question
On 3/15/2014, Stan Brown posted:
On Fri, 14 Mar 2014 13:36:49 -0700, Gene E. Bloch wrote: BTW, many car websites have PDF manuals available for download. They can be easier to search than a printed manual :-) My 2006 Prius came with several hundred pages' worth of manual. A couple of months ago I had the idea to download the PDF, exactly for easier searching as you suggest. Toyota didn't have it on one PDF, but one PDF per chapter. Kind of defeats the purpose if I have to search eight or nine files! We have two Toyotae here, and I have almost screamed at some Toyota people about that. I did create usable (but slightly askew[1]) manuals by downloading carefully[2] and then using PDFSAM http://www.pdfsam.org/ or http://www.pdfsam.org/basic-version/ to merger them. [1] The internal hyperlinks don't work, and also I couldn't find or figure how to add some sections, so they are missing. [2] The first one that I did had two (or more, I forget) sets of manuals on the site for different releases of the car. Oy wey! -- Gene E. Bloch (Stumbling Bloch) |
#56
|
|||
|
|||
Tablet battery question
Stan Brown wrote:
On Fri, 14 Mar 2014 13:36:49 -0700, Gene E. Bloch wrote: BTW, many car websites have PDF manuals available for download. They can be easier to search than a printed manual :-) My 2006 Prius came with several hundred pages' worth of manual. A couple of months ago I had the idea to download the PDF, exactly for easier searching as you suggest. Toyota didn't have it on one PDF, but one PDF per chapter. Kind of defeats the purpose if I have to search eight or nine files! You can concatenate PDF files, with the right tool. I used to do that with Acrobat Distiller and the version of reader/editor it had. I doubt that would work with every new document downloaded today. In any case, it takes work to achieve the desired result. You get a small diploma for stubbornness in the mail, if you succeed :-) Paul |
#57
|
|||
|
|||
Tablet battery question
On Sat, 15 Mar 2014 08:52:41 -0400, SC Tom wrote:
The speed of the tablet/phone being recharged depends more on its capabilities than on the device charging it. If the tablet will only draw .7A max while charging, it won't make any difference if you use the 1A or the 2.1A port. If the tablet draws 1.7A while charging, it will charge faster on the 2.1A port than it will on the 1A one. You can use a PCs USB port to charge a tablet or a phone, but with its max 500mA (.5A) output, it'll take a lot longer to finish than using the battery pack or a wall charger. Thanks for this. (Thanks also for your other descriptions. I snipped them because they told me what I needed to know, and I don't have questions.) Let me see if I understand this last bit. The output of an external charger cannot somehow over-drive the device it is charging. The amount of current that flows is equal to the lesser of the charger's output and what the device will accept. If that's the case, then if I'm charging only one device, I may as well always plug it into the 2.1A output, correct? (FWIW, according to this review http://www.amazon.com/Kindle-Fire-HD...Wi-Fi/product- reviews/B00CUU1CGY the KF HDX 7's battery is only 4500 mAh. When plugged into the wall with Amazon's fast 9 W charger, it takes about four hours to charge from 1% to 100%, which means about 1100 mA. Hmm, 9 W / 1.1 A = 8 V. Does that seem reasonable? So if I plug my device into the 2.1A slot, what happens? Does it charge almost twice as fast, or does it still accept only 1.1 A? If I'm understanding you, it would still accept only 1.1 A. (I'm assuming that Amazon's charger, packed with the KF, delivers as much current as the device will accept; it would be kind of silly otherwise.) -- Stan Brown, Oak Road Systems, Tompkins County, New York, USA http://OakRoadSystems.com Shikata ga nai... |
#58
|
|||
|
|||
Tablet battery question
On 3/15/2014, Paul posted:
Stan Brown wrote: On Fri, 14 Mar 2014 13:36:49 -0700, Gene E. Bloch wrote: BTW, many car websites have PDF manuals available for download. They can be easier to search than a printed manual :-) My 2006 Prius came with several hundred pages' worth of manual. A couple of months ago I had the idea to download the PDF, exactly for easier searching as you suggest. Toyota didn't have it on one PDF, but one PDF per chapter. Kind of defeats the purpose if I have to search eight or nine files! You can concatenate PDF files, with the right tool. I used to do that with Acrobat Distiller and the version of reader/editor it had. I doubt that would work with every new document downloaded today. In any case, it takes work to achieve the desired result. You get a small diploma for stubbornness in the mail, if you succeed :-) Paul PDFSAM, which I already linked to, is free, and works fine for me. There are many others, of course, including online ones: upload your files and choose an action (such as editing) and download the result. I rarely use those, since I rarely edit PDFs. -- Gene E. Bloch (Stumbling Bloch) |
#59
|
|||
|
|||
Tablet battery question
On 3/15/2014, Stan Brown posted:
So if I plug my device into the 2.1A slot, what happens? Does it charge almost twice as fast, or does it still accept only 1.1 A? If I'm understanding you, it would still accept only 1.1 A. (I'm assuming that Amazon's charger, packed with the KF, delivers as much current as the device will accept; it would be kind of silly otherwise.) You understand SC Tom, but you are trying not to. The device controls the charging current, not the charger, unless the device can accept more than the charger can provide. Then the charger wins, by default. -- Gene E. Bloch (Stumbling Bloch) |
#60
|
|||
|
|||
Tablet battery question
On 3/15/2014, Stan Brown posted:
(FWIW, according to this review http://www.amazon.com/Kindle-Fire-HD...Wi-Fi/product- reviews/B00CUU1CGY the KF HDX 7's battery is only 4500 mAh. When plugged into the wall with Amazon's fast 9 W charger, it takes about four hours to charge from 1% to 100%, which means about 1100 mA. Hmm, 9 W / 1.1 A = 8 V. Does that seem reasonable? Not at all reasonable. You are assuming that the charger always outputs 9W. Not so. It is more logical to calculate that 1100mA times 5V = 5.5W output, which is what the charger averages in this situation. That leaves you 3.5W headroom, if you like to look at it that way. BTW, the charging rate decreases as the battery charges, but different pairs of battery and charger would have different functions of current vs time. You might actually be charging close to 9W at first. Note: This reply died in my newsreader or provider so I'm recreating it - since MesNews also managed to lose the draft :-( -- Gene E. Bloch (Stumbling Bloch) |
Thread Tools | |
Display Modes | Rate This Thread |
|
|