Brand Name: EAFC
Type: USB Charging Equipment
USB Port: Dual USB 5V 3.1A QC3.0
It can supply power to mobile phones, tablets, GPS, etc. It can also be used for car refrigerators, vacuum cleaners, etc. The voltmeter can detect battery voltage.
The red wire is connected to the battery positive +, the black wire is connected to the battery negative -
Product advantages :
1 3.1A super large current, can be used for mobile phones, tablets, navigation, GPS, etc.
2 The product has a waterproof cover, which is safer to use.
3 The product comes with a voltmeter, Voltmeter test range: 5-16V
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