Recent content by delvxe

Thanks. I will make that change.

Those are for the shore charger that this thread is about. I have now removed the negative from the terminal and connected it to the other side of the BMS.

Thanks so much. I will do that and this makes a lot of sense. The other side of the BMS (black wires) is just connected to a ground on the van body. Are you saying I need to connect somewhere in those wires? Maybe to the same ground?

Very likely I’m using imprecise terms. In the photo, you can see I am connecting the charger to the terminals circled in red and brown. The terminal in brown is connected to the BMS. Is this the proper way to connect this? And it shouldn’t overcharge the battery?

Thank you all for the feedback. I think I am hearing it is safe to leave connected to the main pos and neg for the occasional overnight use since it is so low power. Could I leave it connected for a long time? It may not very quick (which is fine) I just need something very infrequently to help...

Hi all, I searched, I promise and couldn’t fit the info I need. I have a 120ah lifepo4 battery I built from prismatic cells in my van. It charges via a small solar panel permanently mounted and the alternator when I am driving. Recently I haven’t been driving much and my always-on fridge is...

Economical is what I am looking for! How would I test the other three. They are currently all still bound up in a pack and the battery still functions -for safety I disabled the battery this AM. The other three appear fine and voltages read correctly. For some reason (need to diagnose) cell...

I still need to diagnose what I did wrong, but I ruined one of the cells in my 12 v 120 Ah pack (overcharged, vent blown, bad smell). What I did wrong is a different (shameful) discussion. My question is - what do I do with the other three cells? Is it feasible to buy just one cell to replace...

I am getting strange (and wrong) readings from my BMS while the alternator is charging. The BMS reports cell 4 is at a very high voltage (like that 3.8) when the alternator is charging the system. I confirmed with my Fluke voltmeter that the actual actual voltage is closer to 3.5. Readings are...

I calibrated the voltage in the app using my fluke meter. Is that what you are asking? It was surprising close to the readings from my meter out of the box. My Fluke multimeter doesn't measure current, and my other meter is a cheapo big box meter.

Tried to keep the battery setup in my van simple with just the cells, BMS, and electronic bits but am really dissatisfied with monitoring the battery through the bluetooth from the BMS. The SOC seems to be all over the place and a few other annoyances. Can someone point me to a product or...

I’d like to test the voltage of the individual cells in my LIFEPO4 12v pack and compare to the reading of my BMS. Really tired of disassembling the bus bars and balance leads. Will I still get accurate readings for individual cells if I keep them assembled? Assuming no, but wanted to check with...

It is definitely an acquired taste ?‍♂️ Actually I was draining voltage in the hope some of the swelling would go down.

UPDATE———— I was able to drain a couple of the cells some but don’t think that reduced any of the swelling. I think the tight box must have saved me and kept them from bursting open. I was eventually able to extract one of them using a little motor oil and elbow grease. The cells are in tact...

Just a regular socket with a couple of wires should work?