Can I recharge a Proto-Sound, 8.4V, 120mAh battery using a 9V, NiCd/Ni/MH, Battery charger rated 100-120mAh?
A full 9V charge at 120mAh is 8-10 hours. Could I successfully charge the 8.4V battery for less time?
Thanks for any info.
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Rocky,
I recommend you replace the battery with a BCR.
PCRR/Dave
The MTH battery will charge just fine on your "9V" charger. I wouldtry it and see --- but do not charge for more than 1 hour. The 8.4V is the nominal output under load-- 1.2V per cell, 7 cells. A NiMH battery will charge to 1.4V per cell if the charging voltage is high enough. This is not a problem, as the voltage per cell will drop quickly to 1.2V, then maintain that voltage till it drains.
hope this helps--
William,
but do not charge for more than 1 hour
Why the 1 hour time limit?
I am not aware of any rechargeable "9-volt" batteries being 9 volts, since rechargeable cells are usually 1.2 volts and any battery must be a multiple of that. Most commercial "9-volt" batteries have 6 cells, for 7.2 volts. A charger designed for them should also work with an 8.4 volt battery, but at a slower rate. I would check current with an ammeter.
