90V 20A Color Dual-Display Voltage Current Meter Charge Discharge Measurement Counter, Without Relay Option:Without Relay 5) Compatible Laptop Models: HP

SKU: 6987635192

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90V 20A Color Dual-Display Voltage Current Meter Charge Discharge Measurement Counter, Without Relay Option:Without Relay 5) Compatible Laptop Models: HPFeatures 1. Bidirectional current detection, users who detect charging and discharging can easily detect bidirectional current without changing the wiring direction. 2. Power off memory function, after power off, it can memorize the AH number before power off, which is convenient for observation and measurement. 3. The time and AH number reset function will not affect the next measurement. 4. The number of AH can be topped up without affecting the

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