Now I am approaching 5000km on my Eplus,just 14km short of 5000km
I don't see really any signs of battery deteriorating, I ride exact distance every morning and would notice that. Battery SOC meter on E+ is very accurate and consistant,
no 3 light useless battery "indicator" on Eplus.
However I discharge only to 70-80%SOC so I usually use only 30% capacity,charge at work. My E+ battery was fully discharged only 3 times to calibrate SOC meter.
My project to convert E+ to A123 LiFePo battery continues, A123 20Ah battery is ready, complete with electronics, ABS battery enclosure molded to Biria frame will be placed low in the frame, almost matching Cof Gravity of hub battery.