Originally Posted by PerformanceRC
The difference is that FMA is no longer a distributor for Kokam. Same cells as Orion.
Other than that, FMA incorporated a low voltage cutoff, separate charge leads that bypass the low voltage cutoff, and another lead to power the BEC when the voltage does cutoff. Too many wires in my opinion. Plus they don't have the protective case the Orions have. I prefer the Orion configuration.