FNB58 FNB48 USB Tester Voltmeter Ammeter Fast Charge Detection Trigger Voltage Detector Battery Capacity Measurement Tool ,Live Data

It has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface. 0.0001 low resolution, real-time detection of subtle changes in voltage, current and power while recharging. Four functions curve display: Real-time voltage and current curve for view recharging curve changes in real time Abnormal recharging is found immediately. The offline curve recording support up to 9 hours offline voltage and current curve recording, show up during recharging. D+D1 voltge curve can show the recharging protocols changes and master in time.