I have 2 mehrpow 100ah that has worked for 3-4 months. Both suddenly stopped outputting power. The app says they both are good, however not even the jumpstart will get the batteries to give me power. I can charge the batteries. So I'm guessing it's something to do with the BMS. Asking someone overseas how to fix this is ..... Well let's just say it's no help.
sorry to hear that. Have you checked the voltage with a multimeter? How are they hooked up? If in parallel I would unhook them and charge each one up individually and see what happens. The cells could be unbalanced which causes the BMS to shutdown to prevent over voltage.
Just received their "Tolling Motor" version and it shows 0.3V (I don't have a multimeter, and this is what the charger tells me -- NOT CHARGING IT YET). Would this be a DoA battery? Or a shutdown BMS? I am awaiting a response from the vendor.
Hi @@bansheerider619 thanks for that info! I do find it odd that Li Time support makes no mention of the BMS being shut down deliberately and are instead even offering to 'loan' me a 0V charger. The 0V charger is their 'method 1' for recovery, and their 'method 2' is to connect a 12V solar panel+charge controller.
My Li Time battery came 49 percent charge to but the BMS was already on. I bought this battery for the bluetooth feature. When I am out boating I can quickly check the charge percent of the battery.
@@BTSflyer I will be wiring these in parallel on my trailer. It’s nice in the app you can setup 2 batteries in parallel and monitor the voltage of both.
