I have seven e-flight 3.7v 120-180 (various)mah 12cbatteries, and one thunderpower 160 25c. All of the e-flight batteries seem to have gone bad at the same time, or something is going on. The thunderpower is the only one that gives any performance. I don't think it has anything to do with the plane because I've sistimaticly charged all batteries and tried in sukahoi, charged and then p-51. I no longer use batteries a source for charging because the sukahoi came with a charger than plugs into 110 (wall). However, it seems thatI started to loose performace about the same time that I got this charger (but the old style doesnt work with new batteries either). Both was will act like they are charging the batteries. some of the batteries have hundreds of flights on them other have only about two mnths worth(maybee 50 cycles worth, and none of them show any signs of swelling) Anyone have any ideas on what is going on here, if it wasnt for that one thunderpower battery i would asume that the moters were loosing performance. What are issues with shelf life (sitting charged) or anything I'm missing
ps Im not over discharging either.....you can hear it before it cuts you off.....only ocassionally been cut off by esc