noeifevo 64v 3a lithium lifepo4 batterieladegerat ladespannung 73v mit lufter aluminiumgehause lcd bildschirmSince some batteries with M25 charging connectors have integrated charging protocols, our charger does not support these batteries. Please check with the battery manufacturer before purchase to confirm 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 us online or by