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FaithRaven said:
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

Its not just theory, the reason Li-Ion batteries are gaining popularity is because they actually perform well compared to other batteries.

As I've said already regarding the quality, I'm confident it will be high quality because I've dealt with monoprice before, they sell high quality products at ridiculously low prices, and everything I've purchased from them has followed this pattern so I'm not going to doubt it now, I'll know soon enough though.

The problem you're describing in your anecdote  makes me think that something is wrong with the internal resistance of the 3.6 Ah battery.  A malfunction is really the only explaination for it being outperformed by a factor of 6 by a battery with 1/3rd the capacity.

Honestly I'm not sure that the subject of a simple battery choice is worth all this fuss, but just the same I ran across a site that actually gathers data on this stuff (batterydata.com) and their position is that Li-Ion and eneloop NiMH batteries are roughly equivalent in terms of prices, power, efficiency, etc...The only real differences are the convenainces each offers (eneloop is better at longterm storage while Li-Ion needs less frequent replacement, charging habits don't matter, and it weighs less). Personally, I'm happy to take their word for it until another group of people who have actually collected data and done the research come along and say otherwise.



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