Nice and good info video. Had good experience with JKBMS but this display is worse than a button. You do not know if your battery port is on or off because the display is off and it is nothing to see the status. If you want to activate the display, you will turn the BMS on. Thub downt JK.

"screen always on" only works with the 4.3 inch screen. (got the information from the costumer support)

This LCD can also show errors (warnings) from BMS as an "ERR" with 1-9 digit. There are nine "error codes" (1-cell overdischarge, 2-cell overcharge, 3-overcurrent, 4-MOSFET overtemperature, 5- battery overtemperature, 6-short circuit, 7-internal communication exception, 8-balancing wire resistance too high, 9-balancing wires are broken) as written in the manual. BTW, Cre8ioz, can you send me the photos of PCB, pls?

Percentage readings on my 10S Li-ion drop from about 40 % down to 4 - 3 - 2 - 1 - 0 (empty) which is weird and not really usable / helpful display information.

Thanks.Useful reveiw

it have plastic cover on screen, you have to remove it! (I used to complained a shop before)😅

Need to check if the display stays in while charging..

Junk. Mine just failed today. After about a year and a half.

JKBMS factory does not give garantee. I buyed 2 JKBMS from factory, at one the display gets dark after 9 Month. the factory requested a video from the dark display. Instead to send me a spare, the answer to the video was only "Great", what a stupid answer. Ofter my new request of the garantee, the factory answers, i can buy a new one. So beware to buy these product and try Open Source instead.

Good.

memory full LOL. I`ve did some photos from the PCB.. idk if anyone needs them..