NOEIFEVO 21V 2A 3A 4A 5A Lithium-Ladegerät für 5S 18.5V Li-Ion Lipo-Batterien, mit LCD-Anzeige, Kühlventilator, automatischer Abschaltung（RED） 84V(72V 74V 20S) the standard polarity is 1+

the standard polarity is 1+ for positive and 2− for negative

Socket Type: CEE 3 x 16A

this version is suitable for households with an open garden to prevent others from using your charging station without permission

Starting voltage: 82

4V 8A Battery Charger

NOEIFEVO 21V 2A 3A 4A 5A Lithium-Ladegerät für 5S 18.5V Li-Ion Lipo-Batterien, mit LCD-Anzeige, Kühlventilator, automatischer Abschaltung（RED） 84V(72V 74V 20S) the standard polarity is 1+Due to some batteries with M25 charging connectors that have integrated charging protocols, our charger cannot support batteries with built in charging protocols. Please confirm with the battery supplier before purchase if the battery has an integrated charging protocol. For M25 (2+1+5) and M25 (2+4), the standard polarization is 1+ for positive and 2 for negative. If you require a different polarization, please let us know. Contact options: You can