NiMH versus Li-ion?

Question

I have this video camera battery, supposed to be 1.25 Ah, Li-ion, from 2005. It now does about 25 minutes at .5 A, so 1/4 capacity... They are expensive, and this one was not used a lot in 2008.

3.6 V at 1.25 Ah.. The latest AAA are close to 1Ah, and do not 'degenerate' a lot it seems,
3 of those is cheaper then a new LI-ion, and not much bigger.... Does that not make Li-ion much less attractive? I could even tape 3 AA NiMH at 2 Ah total to the camera... for a fraction of the price.

Is the _only_ advantage of Li-ion 'size'? Seems Li-ion is a bad deal for long time use.

Jan Panteltje · Accepted Answer

On a sunny day (Sat, 25 Apr 2009 10:48:51 GMT) it happened Jan Panteltje wrote in :

Anyways, solved it, made a 5V battery pack with 4 2.3 Ah NiMh.... using the normal charger input to the camera, no modification needed. Just stick in the battery pack when internal battery is low :-) ftp://panteltje.com/pub/mustek_dv9300_camera_battery_pack_img_1093.jpg

That battery holder could be 20 years old, never throw away anything that could be useful, that included that cable with connector. And those AA cells too.

Brendan Gillatt · Answer

Li-ions from 2005 will have a smaller capacity than modern cells so bearthat in mind when replacing the battery.Li-ions are also less toxic than NiMH / NiCd cells.But yes you are correct in making the point that li-ion cells don't agewell. The Battery University has some information about that. Mostmanufacturers don't care too much about consumer items once they go pasttheir 1 year of warranty.- --Brendan Gillatt | GPG Key: 0xBF6A0D94brendan {a} brendangillatt (dot) co (dot) uk

Jan Panteltje · Answer

On a sunny day (Sat, 25 Apr 2009 14:03:59 +0100) it happened Brendan Gillatt wrote in :

But yes you are correct in making the point that li-ion cells don't age

Right, exactly what I have been thinking, those poor Apple Ipod buyers.. they will need to buy a new one every few years :-) Good thing I bought a Creative labs Muvo mp3 player that accepts a normal AAA.

NiMH versus Li-ion?

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