My BIAB laptop is a few years old now, and although I use mains power 99% of the time I notice that the battery is not holding its charge very well.

In the early days (1980s) of video cameras, the batteries (NiCad IIRC) suffered something called "memory effect", whereas if you didn't fully charge & discharge the battery, it would "think" if was was fully charged when in fact it wasn't.

Is that still the case with modern laptop batteries? Or any hints about battery care?
Thanks in advance.


Cheers,
Keith