MH-CD42 is lithium battery charger 2.1A and discharger(3.5A) unit with battery level indicator LEDs, ON/OFF switch and
Review of XWST 12V to 24V 10A DC Waterproof boost for boat, golf car etc
This convert module is tested with 12V input and 240W output under different condition. https://youtu.be/v6w2Gb7C7-4
Review of battery master disconnect switch for Car, RV, Boat or Sound System
This switch sold on Amazon (see link below) is to connect and disconnect battery used in Card, trucks, RV, boats or any other applications where battery power is used. https://www.youtube.com/watch?v=cbrujyP2OFY...