Javier: I found the Thunder Power TP4000 Pro Lite that you mentioned, but the Max Burst Discharge is only 18C. I use a Thunder Power TP2500 in my Acro Master and it has a 20C Max Burst. Is it still OK to use that Pro Lite 4000? I did some more MotoCalc work today using the E-flite Power 32, Castle Creations 60 AMP ESC, Direct Drive APC 12x8 prop, etc. I got the same readings using an Electrifly 5000 20C Max Burst as I did with a Flight Power 3700 20C: Strong climbs and rapid acceleration, short take-off runs, no difficulty taking off from grass fields, and sufficient in-flight thrust for many aerobatic maneuvers. It would also readily loop from level flight. In further research, I'm interested in either the Great Planes Electrifly 11.1V 5000 mah 20C Burst or the Thunder Power 11.1V 4200 mah 3S2P 24C Burst. Would either of these be OK to use? There's only a $10 US difference in price.

Thanks again,

Richard