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first off the 7.6 hv just means these are better quality battery cells that can handle the higher volts. The graphene is arguably better at lowering IR (internal resistance - think of battery losses before even leaving the battery). Also the capacity of a hv 7.6 battery needs to be higher IF you are charging at 7.4v. The 6800 is 6800 at 7.6 but if your racing where there’s 7.4 battery limits, your 6800 just became a ~6200mah because it’s not “fully charged”. The plus side to that is less fade. If you look at battery curves, it’s highest at 100% then gradually curves down. If you race stock classes, a flat discharge rate is very nice. You kinda throw away the extreme values on a battery curve. No big drop off from 100-90% and you balance your cars power so you have enough battery to run the race. During the last minute you won’t have to punch the throttle extra to make those bigger jumps if your battery curve is still flatter rather than dropping