Battery problem


New Member
Hi,I'm 57 from lreland and have built an ebike about a year ago now. I have a problem with the original battery a 48v 1500 charges to 51v but cuts out at 47v and still seems to have lots of power. I plug it out and back in and it runs for a short time and cuts out again and again. I'm wondering if it a bms problem ..can anyone shed any light on the problem, thanks