RE: ESM LA-7 From VQ Warbirds
I am no expert but have gone through it with my 3D helis. Higher voltage can mean higher efficiency while extending the life of your batteries. How many minutes of flight time are you getting on the A123? I ran a 10sA123 on a heli and I get around 4 min max at full power, drawing 2200 from the packs. A123s are great but Lipo is still king when it comes to power and weight. I rebuilt all my A123s to RX packs and they are working great on my warbirds.