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I had asked JKBMS and they replied; Reload the app. It was indeed a little bug from JKBMS. When you reload the application, you can read: SOC-0% Volt(V) 2.650 SOC-100% Volt(V) 3.500 It works. Thank ArthurEld, & JKBMS.

above is the message sent to HANKZOR. Here's their reply: "OK, we received your feedback. Can you provide some proof? We will confirm it and then give you after-sales service. You can take photos or app screenshots." On the other hand, is there a reliable alternative to JK bms b2a20s20p-H-C ?

But u have to pay Microsoft !

Hello, after a few months of perfect operation, yesterday my JK BMS froze.I turned it off using the button (a long press). Since then, I've been unable to start it, either using the button or an external source between P- and B-.No "beep", no Bluetooth.

Unfortunately, I seem to be the only one with this indication! I couldn't find anything on the Internet. There are hyper JKBMS specialists on this forum, but maybe I'm not in the right section? I'll wait and see. Thanks

Hello everyone After 2 months of operation and 6 cycles, the percentage of battery remaining still seems crazy to me. Do you have the real parameters to enter for EVE280 cells (SOC-0% Volt(V) & SOC-100% Volt(V) ). Thanks

Please click on the picture to sea them full screen !

After a three-month-old JKBMS broke down, I ordered and received a new one. I used the existing harness to fit the new one and it works fine but: A new parameter has appeared and I have no idea what it is! "Battery OVP(V) and Battery OVPR(V)". I understand OVP and OVPR perfectly, but which...

The story takes place in 2 stages. Patience not being my first quality, after obtaining a honest discount, I ordered the same BMS . I'll change it directly without rewiring, then send the faulty one to China. Will it be changed, refunded, mystery, to be continued...

I have 4.9.3 version.

Welcome in the club ! I follow strictly the video, but nothing ok. https://www.youtube.com/results?search_query=srne