Hi ESFMs,
I'm having this recurring issue lately with my battery where it will just shut down.
The first time it happened, it was after a phase wire broke. After repairing the connection, not only did my battery not respond but I was also getting low voltage readings of 19v. It's a 48v pack.
After pulling the pack apart that night and discovering that I had no continuity because of a connector, I replaced the connector and started getting healthy readings of 50v again and it had been fine since.
Until today. I did everything I did last time. I opened the pack, checked for continuity on both the red and the black discharge wires. This time they were solid. Using my volt meter, I kept getting readings of 10v, 14v or sometimes 19v. Then somehow, I don't know how, it fixed itself and started giving healthy readings of 51v. I finished my frustrating journey without any problem but it did it later in the day.
What is happening and what do I look for? How do I troubleshoot this? I'm not sure, but it seems to fix itself when I move the red wire around.
I also checked on the bms voltage per series(the first time it happened). Though I sorta rushed it because I kept sparking them by accident and I didn't want to ruin any cells. They all had a reading of 3.7v (if memory serves me) how do you test those without accidentally crossing our touching 2 at the same time?
I'm having this recurring issue lately with my battery where it will just shut down.
The first time it happened, it was after a phase wire broke. After repairing the connection, not only did my battery not respond but I was also getting low voltage readings of 19v. It's a 48v pack.
After pulling the pack apart that night and discovering that I had no continuity because of a connector, I replaced the connector and started getting healthy readings of 50v again and it had been fine since.
Until today. I did everything I did last time. I opened the pack, checked for continuity on both the red and the black discharge wires. This time they were solid. Using my volt meter, I kept getting readings of 10v, 14v or sometimes 19v. Then somehow, I don't know how, it fixed itself and started giving healthy readings of 51v. I finished my frustrating journey without any problem but it did it later in the day.
What is happening and what do I look for? How do I troubleshoot this? I'm not sure, but it seems to fix itself when I move the red wire around.
I also checked on the bms voltage per series(the first time it happened). Though I sorta rushed it because I kept sparking them by accident and I didn't want to ruin any cells. They all had a reading of 3.7v (if memory serves me) how do you test those without accidentally crossing our touching 2 at the same time?