FaithRaven on 13 August 2008
That's the theory, but practice kills the theory.
Any battery, no matter of it's type lasts longer and holds more power if you charge it 100% after it's 100% discharged.
I'm owning shitloads of batteries of all types and my experience says that Lithium batteries suffers more from the memory effect than the NiMH batteries (ain't got Ni-Cd to test but the difference shouldn't be big at all).
Also Lithium batteries tend to cost much much more than NiMH and Ni-Cd. I seriously doubt the quality of the charger and battery you buy for $10.
Manufacturer does matter. Here's an example for my PSP:
$10 no-name 3600 mAh battery - lasts ~1 hour
$50 Sony 1200 mAh battery - lasts ~6 hours
