I use mine in my travel trailer and it also does that. I don't know if it reports a higher soc based on that but I did test the capacity and it measured 106ah. Also the cells eventually all balanced.My vestwoods pow bank app doesn’t show battery discharging unless it’s at least 2amps. I think this causes the app to report a higher battery charge % than it should. Have any of you had this experience?
Still within 30 days? Just send it back, get another one. Might be something bad with the wiring on the inside causing the cell imbalance, loose connection or bad solder joint or something.I purchased four of these 100ah Vestwood batteries with bluetooth to put in my RV and am not totally happy.
3 of the 4 charged up with a Victron 15a smart charger just fine and capacity tested between 101 and 103 ah. 1 of the 4 however has a problem. I used the default LiFeP04 charging profile on the charger (15a bulk to 14.2v and absorb 2 hrs at 14.2v). The battery app showed a cell over voltage alarm just a few minutes into the absorb and the BMS disconnected charging. The battery app said "cell OV severe alarm" and "charge MOS open error". The readings for the individual cells when it first alarmed and disconnected were 3363mv 3369mv 3702mv 3423mv. You can see cell #3 was way high. After a couple of hours rest the cells seemed to balance themselves out and the pack voltage settled to 13.5v. I then discharged the battery till it disconnected with an under voltage alarm at about 12.25v and got 95ah capacity. I tried charging a second time with pretty much the same results. Vestwoods product data sheet and the Amazon listing says I can charge at 14.4-14.6v and 100a. Vestwoods technical service so far has been very little help. Any ideas or suggestions.
The readings for the individual cells when it first alarmed and disconnected were 3363mv 3369mv 3702mv 3423mv. You can see cell #3 was way high.
With just this one battery? Is so, them maybe it is time to see about a return. All of mine work well.The pack amp charge rate value in the app varies wildly (+/- 10a or more while charging at about 35a) whenever you press the update icon. I don't think all the data I am seeing in the app is all that accurate.
FYI - Amazon currently has a $100 coupon on that battery. I think it said good until 100 pieces sell. Something like that. 12/7/221st post and I'm new to solar.
Thanks Texas-Mark for starting this thread. Based on what I'm hearing here, I believe I'm going to order 2 of the 200AH version from Amazon @$609 (link below) knowing that the low temp sensor is functional. These will be going into my truck camper. I'll update with my readings, once I get them charged. Thanks again for everyone's input!