This handy kit is really useful for operating car fridges or other devices off a second battery while the engine is not running, preserving the main battery for starting the engine. The kit automatically isolates the second battery once the engine is stopped and then re-engages the circuit (controlled by MOSFET transistors that handle approx. 100A) to recharge the battery when the engine is started. This kit also features LED battery status indicators and is housed in a weatherproof die-cast case. The kit is supplied in short form with all electronic components, battery terminals, casing, cables and PCB.
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