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Recharging Time for NiCads

K

KellyClarksonTV

Jan 1, 1970
0
I have a AA Nicad charger that charges 700mAh batteries using the 5hr rate, but
I want to use 1000mAh batteries (same size, AA Nicad). Is it ok to recharge
them using that, and is the charging time also 5hr or should it be longer?

Thanks.
 
J

Jerry Greenberg

Jan 1, 1970
0
If it takes 5 hours to charge a 700 ma/Hr battery, the charge current
from your charger should be around 140 ma. Most likely your charger
is working at 150 ma or so.

It should fully charge the 1000 ma/Hr batteries in about 7.5 to 8
hours.

Chargable batteries have a minimum charge rate, depending on their
specifications. For most of the AA size batteries, the minimum charge
rate is about 60 to 80 ma. A charger working at 140 to 160 ma/Hr is
not going to be overly stressfull for any of the standard chargable
batteries. For most of the 1000 ma/Hr battery types, it is safe to go
to about a 250 to 300 ma/Hr charge rate.

I would say your charger should be okay for what you want to do.



Jerry G.
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