I put a 1450 mAh NiMH in mine, and I can fly all day, and most of the next--heck, call it all weekend on one charge. At full charge, mine reads 11.2V, which fairly quickly will drop to about 10.6V, but after that falls off slowly but gradually. I usually recharge at 9.6-9.7 V. This equates to about 1-1/2 hours total use, I guess, spread out over the entire day or days. I don't think it would last that long if used continuously.