- Displays Precise Voltage
- Reverse Polarity Protection
- Voltage Range: 0V - 4.5V
- Measurement Accuracy: ± 5 mV
- Display Accuracy: ± 10 mV
- Compatible with: 26650 18650 18500 18350 10440
For vaping and electronics enthusiasts, keeping track of your battery's health is a top priority. The Efest T1 Tester is a compact battery tester that provides detailed information on your battery's voltage, letting you know exactly how much charge is left. A clear and easy to read LCD readout displays the metrics in digital style, and is accurate to 5 mV. This tester is compatible with the most popular batteries in the vaping world including 18650, 10440 and many more.