Typically, a few percent. But I’ve never tested 30Q’s after long storage, I could be wrong. If they’re still at that 3.3V (??) or so they mentioned then that’s a good sign though.
Got a couple of these to run some lights off of, I’ll let you guys know how they turn out.
I bought 13 of these to build a 12s6p, with a few cells left over.
How are the 30q cells performing/testing?
I unfortunately am trapped in Colorado at the moment due to the Southwest shitshow so will have to wait till (hopefully) this weekend to test them out.
Good luck with travel! ill probably message you again next week if mine haven’t come in yet.
My batteries came in. The packs are testing at 10-15 v on a supposedly 6s pack(22v). Very below the advertised “testing like new” hopefully my pack will charge when its completled. Cant complain, 100$ for 80 cells and a bms.
Maybe they’re just shipped with lower voltage. battery capacity testers are like 15$
Rrr then again that’s really low. Like damaging low I think
Batteryhookup has always sold me great stuff.
Charge SLOWLY and check cell temperatures every few minutes. Then leave the pack for at least an hour so the voltages can settle, record the cell voltages, and then check the cell voltages after letting the pack sit for a week.
Any cells that have dropped to a voltage a lot lower than the others are most likely too damaged to use.
Isnt there a rule about shipping 30% soc so maybe that could impact it.
Thanks for the tips, was completly awarre of chraging going to slow charge to wake them up a bit. Ill definitely test the pack before i implement it. Ie, charge, sit, test, charge, sit, slight discharge, etc…
The modules i purchased use a proprietary bms thing, i think the voltage of these packs could be higher, but i need to figure out the wiring for main positive and negative, charge, etc.
I retested and found main positive/negative. Cells appear to be healthy at 20v in 6s
Hey you ever get these batts up and running? Im starting my battery build and was wondering if you figured out how to activate the bms or bypass it through the mr30s.
I have not, had a bunch of life stuff going on these past couple months and this project got shelved for a bit.