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Q: How does CARKU jump starter work?

A: the 12V lithium-ion battery is built in CARKU jump starter. When your 12V car battery is nearly drained, you can take your jump starter out, plug one end of jump cable into the device, and other end to connect car battery "+" and "-", then start the engine. you can make it.  Besides, you can use USB cable to connect different output port to charge different mobile devices as a battery charger.   

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