The LiFePO4 pack that I bought some times cuts out when pulling from a stop.
The bike never did that with the lead acid batteries.
I am assuming that the BMS is current limiting.
Has any one tried to add a super capacitor in parallel with the battery to help at take off?
I am wondering if the cap could hurt the controller some how by allowing current transients.
I wonder about saftey concerns.
Kinetic energy in Jules=(mV^2)/2 (m in kg, V in m/s)
Energy stored in a capacitor in Jules=(CV^2)/2 (C in Farads, V in Volts)
It would take 5kJ to bring the mass of the bike and myself up to 9m/s (20MPH).
No-load voltage is 48V (lets just say 50) and to keep a good strong acceleration, we dont want the voltage to drop below 40V. would store 5kJ in a 10F capacitor.
So, if I add a 10F capacitor, I should have enough energy stored in that capacitor to get me up to full speed. Once the load reduces, and the battery voltage increases, the batt would recharge the cap while I ride.
Any one try this?
The Caps are cheap these days. $50 for 100V, 10F