Keweisi USB Current Voltage Meter Battery Tester – Digital LCD Power Monitor Detector for Chargers, Power Banks & USB Devices in Pakistan

Overview

Ever wondered if your fast charger is actually delivering advertised speeds, or how much capacity your DIY power bank really holds? The Keweisi USB Current Voltage Meter Battery Tester is an indispensable diagnostic tool for electronics hobbyists, technicians, and everyday users. This compact plug-and-play device features a clear digital display that lets you monitor real-time voltage, current, and accumulated milliamp-hours (mAh) simultaneously. Simply plug it between your power source and target device to instantly evaluate charging performance, detect faulty cables, and measure true battery capacity.

Key Features

• Simultaneous Multi-Parameter Display: Easily monitor voltage (V), current (A), and capacity/energy (mAh/mWh) on a bright, easy-to-read screen.

• Plug-and-Play Simplicity: Requires no external power supply or complicated setup; just plug it into any standard USB port.

• Capacity Tracking (mAh): Tracks power accumulation over time, making it ideal for testing real power bank capacities and battery charging efficiency.

• Compact & Portable: Lightweight design fits easily into any toolkit, pocket, or workbench drawer for quick testing on the go.

Technical Specifications

Common Applications

• Power Bank Testing: Accurately measure how much charge a custom or commercial power bank holds and delivers.

• Charger & Cable Quality Check: Identify underperforming phone chargers, low-quality micro-USB/Type-C cables, and voltage drop issues.

• Workbench Troubleshooting: Monitor power draw in microcontroller projects, USB-powered sensors, and portable electronics.

• Note to customers: Use the reset button to clear accumulated mAh data before starting a fresh battery capacity test!