New, never used. Selling because I managed to get a DieBieMS.
Asking 55€ shipped in EU
Ali link: https://s.click.aliexpress.com/e/cKSznewk
Lots of info about it here: https://endless-sphere.com/forums/viewtopic.php?t=88676
Link for software: https://www.lithiumbatterypcb.com/smart-bms-software-download/
(will upload few real pics later)