The 3-in-1 Battery Tester, Voltage & Current Detector is a highly efficient and easy-to-use device designed to measure the voltage, current, capacity, and working time of USB-powered devices. This compact tool is ideal for testing mobile batteries, power banks, and USB chargers. It provides accurate readings for voltage and current, and it also tracks battery capacity and usage time. Featuring a reset button (RTZ), users can easily reset the meter with a simple press of three seconds. The device also includes a memory function that retains the capacity and working time data even when powered off. Whether you’re a hobbyist, technician, or just someone who wants to monitor the performance of their mobile power devices, this versatile tool offers real-time data with exceptional accuracy.

Specifications:

• Input: USB (for power input)
• Output: USB (for charging or testing)
• Voltage Range: 4V - 20V (±1% accuracy)
• Current Range: 0 - 3A (±0.4% accuracy)
• Battery Capacity Measurement: 0 - 99,999mAh
• Working Time Measurement: 0 - 99 hours
• Display Data: Voltage, Current, Capacity, Time
• Memory Function: Retains working time and battery capacity data after power-off
• Reset Button: RTZ button (press for 3 seconds to reset)
• Color: As shown in the picture
• Dimensions: 7.3cm x 2.3cm x 1.35cm (L x W x H)
• Net Weight: 25g

Package Includes:

• 1 x USB Charger Doctor Voltage & Current Meter Mobile Battery Tester Power Detector