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Old Oct 28, 2004, 12:12 AM   #1
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Using a Fuji A340 camera with rechargable NiMH batteries.

The manual was not clear on this - at least for me - do I use the batteries until they lose their charge and then charge them or do I drain their charge with the camera when they run low before charging.

The idea of draining the batteries each time sounds good but I do not know if this is required or wise.

Any help would be appreciated.

Dallas


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Old Oct 28, 2004, 1:01 AM   #2
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http://www.batteryuniversity.com/index.htm

Look here if you want to know more about batteries.

In short, charge when your camera indicates it. Discharging should be done with a special discharging device. Some chargers have this function.

High and total discharge should be avoided shince it can stress the batteries (decreasing it's cycle life).
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Old Oct 28, 2004, 1:38 AM   #3
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D Parker wrote:
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do I use the batteries until they lose their charge and then charge them or do I drain their charge with the camera when they run low before charging.
Ni-MH batteries are very tolerant of top-up charging. Use them a bit, and then top them up later, preferably just before you need them, but otherwise now & then. A very occasional deep drain (in a camera or similar device, but NOT in a torch or similar) and sunsequent recharge is said to be a good idea.

Mnay of us round here have been using them with no trouble for many years. You just need to remember that they do self-discharge, so a top-up shortly before use is a good idea.

The newer Li-ion batteries hold lots more charge but will probably wear out more quickly. I have many very old Ni-MH cells that are still fully serviceable.

Ni-MH cells are for people with little money and big brains between the ears; Li-ion are for for people with more money than sense. However, we're all going to be put on to Li-ion soon whether we like it or not.
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Old Oct 28, 2004, 9:46 AM   #4
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"Ni-MH cells are for people with little money and big brains "

Well I meet the little money requirement, still working on the big brains bit (:

Thanks for the help guys.
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Old Oct 28, 2004, 10:16 AM   #5
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As other have said no deep discharge is required. I discharge my cells to 1 V per cell only once every 15-20 shallow cycles and for the first 3-4 cycles when the cells are brand new.
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