Battery Failure

danmar713 · Nov 28, 2021

Hi Y'all! I recently put this battery together with a bms. After leaving it connected to my solar setup (campervan) for a few weeks it has sadly lowered voltage to 10.6
Any ideas as to what could of caused it. :shock:

goatman · Nov 28, 2021

had a watt meter brick one of my batteries

john61ct · Nov 28, 2021

When not being used, store cells cool, low SoC and 100% isolated from any electronics, especially BMS type monitoring gear.

Be physically present and closely monitoring while actively cycling.

Hillhater · Nov 29, 2021

danmar713 said:
...... After leaving it connected to my solar setup (campervan) for a few weeks it has sadly lowered voltage to 10.6 ....

Sounds like a problem with your solar charge controller ..?

danmar713 · Nov 29, 2021

Hillhater said:
danmar713 said:

...... After leaving it connected to my solar setup (campervan) for a few weeks it has sadly lowered voltage to 10.6 ....

Click to expand...

Sounds like a problem with your solar charge controller ..?

That's what I was thinking. Not enough sun? Or maybe the charge parameters? I will look into this first, thank you!

danmar713 · Nov 29, 2021

john61ct said:
When not being used, store cells cool, low SoC and 100% isolated from any electronics, especially BMS type monitoring gear.

Be physically present and closely monitoring while actively cycling.

Yeah I had to travel for a conference but I will remember your tips for next time, thank you!

fechter · Nov 29, 2021

The pack was not getting charged AND had some kind of drain. I suggest charging it with a regular charger to bring it back up. If any cell gets below about 2v, it can be permanently damaged. You want to check the voltages with a meter and see what the solar panel is putting out.

danmar713 · Nov 29, 2021

fechter said:
The pack was not getting charged AND had some kind of drain. I suggest charging it with a regular charger to bring it back up. If any cell gets below about 2v, it can be permanently damaged. You want to check the voltages with a meter and see what the solar panel is putting out.

ROGER, it is winter and I am in NY so you could be spot on.

Battery Failure

danmar713

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