![]() ![]() ![]() The AA cell is designed to withstand this overcharge rate without causing overpressure and puncture of the safety diaphragm. That is 270Ma from a current limited source. The recommended charge for a 2700 Mah cell is C/10. A 2700Mah NIMH cell is most reliable when charged in the Uniross (Or equivalent) timed and current limited chargers. Over the past few years trying to find a reliable substitute for Alkali Manganese and the newer(And superior) Ultimate Lithium cells, I have come across Uniross products that really work well PROVIDED you stay away from high speed chargers and observe the simple rules of only using fully charged cells. Actually it took 25 minutes and I actually went through 4 'fully' charged batteries in a few hours on Saturday. In the instructions, it said from dead, they take approx 2 hours to recharge the 2700mah's.
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