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Best batteries - rechargeable or lithium?

Topic started by dioxo on 18 May 2009

3 Posts

18 May 2009, 07:56 pm

My digital camera uses AA batteries. I have rechargeable 2450 mAh batteries and can get a lot of photos from one charge.

My children all have digital cameras which use AAA batteries. I normally use lithium batteries for them but was thinking of changing to rechargeable however the max mAh for AAA seems to be 1000.

I have read that you need at least 2000 mAh for rechargeable batteries to do a good job in a digital camera. Is this correct? If so are lithium batteries still the better option for the children's cameras.

Any advice would be appreciated. Thanks

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30 May 2009, 04:22 pm

Lithium ion batteries are rechargeable, but not normally available as standard size cells as they have a 3v output.

The capacity of the battery isn't really important, except in as much as a battery with a higher capacity will give you more between charges.

What is important is the voltage and how this slides down as the battery is used. Here, NiMH rechargeables actually perform a lot better than alkaline disposable batteries as they give a relatively constant 1.2 volts until they are exhausted as opposed to dropping off very rapidly.

Typically, a rechargeable NiMH battery outperforms a rechargeable disposable in every respect, not to mention being cheaper. Have a read here.

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31 May 2009, 09:31 am

Thanks very much for your advice. I think I'll give the Nimh batteries a try. Cheers

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