Hi all, I recently bought a used 2003 EVT 4000e knowing that the original lead acid batteries were almost dead...
Now every time I squeeze the throttle hard the energy gauge turns yellow or red with a beep -even in E mode. Then as I reduce speed, it goes back to green and no beeps...
So I think it's time to change the batteries...
I have a 48V 20ah LiFePO4 battery (Ping) from a previous ebike that I'd like to use for the EVT4000e. That Ping used to feed a thirsty Crystalyte 5303. On my daily ebike commutes, I used to draw +/-1670W constant @ about 49V -per Cycle Analyst reading- for about an hour without tripping it!!! My understanding is that the EVT's got a 1500W motor, so if in E mode and not hard on the throttle -to stay away from peak discharges, I should be OK with the Ping... And with the Ping, I'll save 110 lb!!!
Here are the relevant specs of my battery:
Voltage: 48 Volts
Capacity: 20 Amp Hours
Charging Voltage: 60-61 Volts
Charging Current: <5 Amps
Rated Discharging Amperage: 20 Amps
Max Continuous Discharging Amperage: 40 Amps
Maximum Discharging Current: 60 Amps
Discharging Cut-off Protection: 50 Amps
1- Would the Ping work on the EVT without tripping?
2- Will the LiFePO4 chemistry work with the stock controller/motor without mods?
3- Any special wiring for connecting a LiFePO4, or just hook the two battery wires to the main Anderson connector.
4- Will the stock energy gauge still work with the LiFeP04?
Your comments much appreciated.