ezebike

So this is what my source at the forum said: ""About lvc on lifepo4, regardless of brand, the absolute lvc under load should be kept above 2.0v,I checked after it shut off and it was 44v; That's 2.75 per cel the voltage profile of lifepo4 is very flat so expect to see a steady voltage reading during 80% of the capacity and a sharp drop at the end.. ( fully charged to 3.65v, drops to 3.4v overnight, and 3.2~2.8v during discharge is average ) " from ypedal if your charger is 54v that is 3.375v/cell, so 3-3.1 is a little low. That was about 18 hours after it was taken off the charger. that cct board is the battery management system(bms) it monitors each cells voltage and shuts the battery off if a cell drops below a set level. step 1 make sure the battery cell voltage is correct. seems off I checked carefully. step 2 check cell voltage under load( have wheel off ground full speed and check cells voltage)could have a cell that looks good but falls on its face under load step3 check voltage from charger while charging I'll do it. step 4 check that wires to bms are reading proper voltage from batteries I'll do it. try driving slow and see how far it goes will tell you if it is an problem with controller drawing too much for the bms I'll do it if I can. connect motor to pc and see what the settings are I ordered a cord from GM when is shuts off on a hill does it stay off until you turn off battery or unplug battery? Yes and then it only goes for a second. I am leaning towards battery or charger being the problem Bold is my comments. New Data: All cells started at 3-3.1v with full throttle and wheel off the ground power and when it died it was 2.5 on 1 cell, 2.6 on 4 cells, 2.7 on 7 cells, and 2.8 on 4 cells. So it shut off at 43v. The charger is putting out 54.5v but at the connection inside is 47. I don't know if that means there's some kind of resistance or bad connection inside the plug or if I'm just testing the voltage of the battery. I'll see what my expert thinks.