I just received 3 new stock 2200 ma batteries and using stock charger. The first charged as normal. The second one acted a bit strange when charging. When almost fully charged, the charger will start blinking red to green. While this blinking was going on, the middle red led was blinking on and off also. Never have seen this happen before. It never reached solid green fully charged condition. I took the battery off and charged the third battery and it went as expected. Put the second one back on the charger again and after a couple of hours, it finally went to solid green with no blinking at all. I did check the battery with a cell checker when it couldnt get a solid green and the voltages seemed fine. Any ideas on this. First time charge on these batteries.