In article , NY
wrote:

Given that many modern laptops have an internal, non-removable battery that
cannot be exchanged when it stops holding its charge, what advice would
people give for maximising the lifetime of a battery?

the battery can be removed and replaced, it just requires a screwdriver
and something that is not needed very often.

Every laptop I've
owned (98. XP, Vista, 7) has suffered from a battery that has a reduced life
(time that laptop will run on battery having been charged to 100%) which
soon degenerates into a battery which refuses to hold any charge at all, so
the laptop can only be used on mains.

battery technology has greatly improved since the win98/xp days.

today's batteries are rated to last 5 years at 80% capacity, which is
longer than the useful life of the laptop but still very usable.