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A question about rechrgeable cells.

U

unbiased

Senior member
I use rechargeable AA type cells for my digicam. My question is ,

Is it required/desirable to keep the cells in the charger with charging on, when not in use?

Will the cells discharge on their own if kept out of the charger even after recharging?

Please enlighten.
 
hey piasa kaua,

They dont supply manuals with rechargeable batteries/battery charger. My question was intended for the people who have already been using Digicams.
 
All rechargeables will self discharge over time. NiCads lose about 1% a day iirc. As to keeping them indefinitely on charge, it depends on the battery type and the recharger,
 
Originally posted by: unbiased
I use rechargeable AA type cells for my digicam. My question is ,

Is it required/desirable to keep the cells in the charger with charging on, when not in use?

Will the cells discharge on their own if kept out of the charger even after recharging?

Please enlighten.
Click to expand...

In my experience, the cells will discharge if left in the camera.

As for leaving batteries in the charger, I'm not entirely sure.
Leaving them in will likely leave them with a "float charge", which will keep them topped off. I don't know if an extended stay at this state will harm them.
If they are left out of the charger, they will begin to discharge. Batteryspace.com forums. Plenty of battery info there.
 
Leaving them in the charger will subject them to excess heat, which shortens the life expectency of any battery. Batteries will stay strong longer if you cycle them.
 
Originally posted by: TwoBills
Leaving them in the charger will subject them to excess heat, which shortens the life expectency of any battery. Batteries will stay strong longer if you cycle them.
Click to expand...

Perhaps - if i leave batteries in my charger, they are warm while charging, but once the indicators stop blinking, indicating a full charge, the batteries become as cool as any sitting next to the charger.

A note about cycling - for one thing, I've heard mixed reports on its effectiveness. Ni-cads supposedly develop some kind of crystallization, that cycling can help break up. NiMH's are less susceptible.
Lead-acid and Lithium-Ion batteries can be damaged by cycling - fully depleting them can cause damage, or just reduce the capacity.
 
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