« on: December 06, 2014, 11:26:07 PM »
Whereas your volt meter is working properly, your batteries with only 1.1 volt are damaged, and will never be charged with the nominal capacity.After I charge the batteries and let them cool down, I have measured the voltage and it is on average 1.1V. When I put them back in the (eneloop) charger, the light goes red and it charges for another half hour before light goes green. I take the batteries out, let them cool again and re measure, I get a voltage of 1.15 - 1.18 V.What I do after the block of 12 batteries has been fully charged, I switch off the power to the adapter, but I leave the batteries in the adaptor. After 15 min when the batteries have cooled enough, I switch on the power again and I get another 30 min charge on top.If I understand correctly, you expect the batteries to cool after being charged, and then make a new charging?
In this case, you will have no gain in battery life, but will only shorten its lifetime.
I recommend NOT recharge a battery that is already full.
NI-MH batteries good quality should have actually 1.39 to 1.45 volt immediately after end the charging. I recommend making sure your charger is the intelligent type (and fully functional), avoiding overheating and premature deterioration of batteries.
thanks for the advice, you are 100% correct.
I used another voltmeter and indeed the batteries read 1.45 volt when fully charged. Another charge on a full battery does not change that reading, stays at 1.45 V.
So, the green red light can only be trusted in the case of (partially) drained batteries, not on full batteries. This is an important lesson for me.
As such, I retract my previous comments
Again thanks for your help