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My batteries were only getting to 27.58v (24v lifepo4) and had an unbalanced cell. I was using the Xiaoping app. The moment I got the overkill app, they suddenly started charging up to 28.31v and all the cells are now balanced. This had been months like this wondering how to fix them. Overkill app sorted it out perfectly and all 3 of my 130ah 24v batteries are all perfectly balanced and charge to the same voltage. Thank you thank you thank you. Even the supplier couldn't fix that. Much respect!
★★★★★Illa· Oct 18, 2024
Works way better than original Xiaoping application for my 14S LiIon E-Bike battery with installed JBD BMS and does not require account and other BS.
★★★★★Frank Minton· Nov 11, 2025
The best app I've found for working with JBD Bluetooth BMS's. No nonsense straight forward operation!
★★☆☆☆Calaghan Grainger· Feb 8, 2024
It's nice to see the charge that is going into the battery and live temps though the BMS never updates in app. It always shows 100% I can drain the battery to 50v (0 percent) and it would still show 100%
★☆☆☆☆Wm Maiden· Apr 24, 2024
To be able to charge my batteries to their full charge I was unable to use this app. I would use this app to try to charge my batteries, and it would say that they were full and everything looked normal, but then when I switched to the other BMS that battery was only as maybe 75 or 80%, and when I switched back to the first battery that said it was at 100% charged it was not it had dropped to 80%. So I went back to the Chinese version and charge my batteries, and they took a full charge.
★☆☆☆☆Patrick G.· Feb 6, 2023
The app sees my BMS, but when click on it it says "No connected BMS" I wanted to give this app a go-to see if it's better than the Xiaoping app, but I have no idea why it won't connect, it does not even turn on the Bluetooth light like the other app does just before you click connect. 1.3.2 -v10 is what it says on the home screen. I'm on a s22 ultra. To bad because it looked like it would be cool.... Edit: the app version on the play store says 1.1.1, but that's not what the play store gave me.
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