
Read the instructions, the device is fully automatic, but it still has a mode selection. There is also a fuse and protection against an idiot - if you mix up the terminals (battery polarity) - the special will light up. indicator.

Portable Electric Vehicle Charger (40A, 240V, 25Ft Cable) - Level 2 EV Charging Station With NEMA 6-50P Plug-In For EVs By MUSTART
19 Review

6FT HORUSDY Gas Siphon Pump With 1/2" Valve And Virgin Grade Tubing For Safe, Multi-Purpose Use (White)
22 Review

Efficient And Convenient EV Charging With MUSTART Level 2 Portable Charger (240V, 25Ft Cable, 25Amp)
18 Review

MUSTART Level 2 EV Charger With WiFi, 16/25/32 Amp Smart Electric Vehicle ETL Certified Indoor/Outdoor NEMA 6-50P 25Ft Cable
30 Review