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OLED USB Tester DC voltmeter current voltage 128x64 Meters Power Bank battery Capacity monitor qc2.0 Phone charger detector

OLED USB Tester DC voltmeter current voltage 128x64 Meters Power Bank

$29.99 $34.99

Quantity
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Use Power Bank regularly: Do not leave it unused for a long period. If the Power Bank for long periods
of time to be used, from time to time perform a single charge/discharge to maintain their normal performance.
Best time to discharge/charge per month of power bank, then the battery is the most effectively and trusty.

Supply Voltage:
DC3-30V

DIY Supplies: Electrical
Brand Name: SJAMING
Dimensions: 65X24X14MM
Model Number: J7-4T
Accuracy Class: +-1%
Display Type: Analog and Digital
Operating Temperature: -10~60
Measuring Range: 3-30V