noeifevo 36 5v 3a lifepo4 batterie ladegerat fur 10s 32v lifepo4 batterie mit lcd anzeige kuhlventilator automatischer abschaltungDue to some batteries with M25 charging ports that have integrated charging protocols, our charger cannot support batteries with built in charging protocols. Please confirm with the battery supplier before purchasing whether the battery has an integrated charging protocol. For M25 (2+1+5) and M25 (2+4), the standard polarity is 1+ for positive and 2 for negative. If you require a different polarity, please let us know. Contact options: You can reach