Lipo's charge much faster than your other batteries. Charge at 1C usually takes less than an hour, depending on how far you drew them down. Iusually fly for about five minutes, takes 15-20 minutes to charge back up. (11.1V 2250 mAH 40C) You'd probably use more doing 3D, but it's not like you have to charge it for 12 hours to fly again. If you have 2 or 3 batteries, you can get multiple flights in an hour.