It is a USB Multimeter USB 3.0 Tester Voltage/Current/Power/Capacity/Charging Panel Meter 5in1 Monitor Tester, Voltage range: DC3.70~13.00V, Current range: DC0.000~3.000A, Capacity accumulation: 0~99999mAh; 0~700Wh, Applicable computer USB, cell phone charger, car charger, mobile power equipment or other USB port device.
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