WANGCL Digital Display USB Tester Voltage Current Meter Power Battery Capacity

This USB tester measures the USB charging voltage, current and discharge capacIty of electronic devices over time. It detects charging anomalies in time to improve charging efficiency and protect electronic devices. Intelligent memory storage, no loss of data in power failure, when measuring the capacity of the rechargeable battery, when the charging cable is disconnected, the data will be saved and will continue to be measured on the original data in the next charging. The digital display can simultaneously show real-time voltage, current, power and time, making it easy to measure and observe. The housing is made of high quality ABS material, durable and high temperature resistant, safer to use. Measuring range:Voltage (3-9V) accuracy ±1%,Current (0-3A) accuracy ±1%,Battery capacity (0-99999mAh),Timer (0-99H).