.... and I know this horse has been beaten to death and therefore I have been doing some tests and measurements. The consens is that the storage voltage for LiPo is 11.4V in this case for 3S batteries meaning 3.8 V per cell. Now I have the Ohnatom and I did fly a few batteries down to where it landed alone and I was not able to lift it up again. The measured voltage in that case was always 11.2V I think that os the default cut off voltage which has been programmed from factory. Now I did start to charge the battery with the BC20-4 (default charger which comes which comes with the Phantom) at 2000mA setting and after 6min 30 seconds I reach a voltage of 11.4V which seems to be the storage voltage. As far as I know the charger is a Constant Current charger until it reaches the cut off voltage of 12.6V and then changes to Constant Voltage by decreasing the charge current and then somewhere it shuts off. So far is how I understood the charger or most of the cahrgers work Making a math ( maybe here is my mistake ) means that the charger loaded into the battery not more then 240mA which is not more then a bit more then 10%-11% and here starts my confusion. I have read here in this forum that one shoud store the LiPo with 40% to 50%, some other say 80% and so on. If I charge the LiPo I have up to 80 percent it takes about 64 minutes @ 2000mA ( BC20-4 allegedly starts to blink Red/Green then the battery is charged up to 80% and yhis happens at 12.48V - 12.50V) and charging until the LED stays green takes about 80-90 minutes. Now I have just read that in the charger User guide that the maximum charging amperage is restricted to 1800mA when I have the setting 2A or 3A. So why do they have a 2A and 3A setting when the circuit cuts it down in order not to get over 20W ¿? Extract from the User guide http://download.dji-innovations.com/dow ... uction.pdf Now should I charge to 11.4V or charge 40%, 50% or 80% capacity but then the volateg will not be 11.4V as recommended by many sites for LiPo .... I guess I will get a smarter charger :roll: Thanks for reading and any comment is welcome.