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Yes I hope that’s correct I tightened the negative seems better. Will go through them all later. Thanks

Tighten up the negative bolt seems to have helped!

Now the first cell is jumping from 3.38 to 3.99v very fast!

A volt meter?

Using this balancer. Which I tend to leave on all the time.

Hi my diy lfp battery shut off my inverter after about 3/4 hours on full charged battery. 280ah cells. On looking at the app the first cell was well below the others. I charged up the battery today via solar and the first cell I think it’s the one with the positive output. But could be the one...

i ordered the plant warmer maybe when i try it out i will start a thread. thanks... gosh $220 for the battle-born heat pad!!

this might be even better 21w 20c. seed bed heating mat...

this might be a better option it has a thermostat. https://www.ebay.co.uk/itm/Universal-Motorcycle-ATV-Carbon-Fiber-Seat-Heater-Warmer-Kit-Heated-Pad-DC-12V/333113246970?hash=item4d8f18c4fa:g:N1MAAOSwkmJch2lS 25watts isn't that bad when water heater pads are 100w. i maybe could leave a air gap...

it was more this that i was wondering about (Power: 20 ± 5W Thermostat: 70 Celsius) i don't understand the power consumption, is it only 5 watts 70c seems high for 5w.

Hi was thinking of use car seat heater pads to heat batteries, any idea if it you be ok? https://www.ebay.co.uk/itm/2x-12V-Carbon-Fiber-Car-Seat-Heater-Pad-Mat-Cushion-Heating-Heated-Warmer-Winter/184623320857?hash=item2afc684f19:g:i~MAAOSwYKpgAoav