Vaping products contain nicotine, a highly addictive chemical.
- Health Canada


Les produits de vapotage contiennent de la nicotine.
La nicotine crée une forte dépendance. - Santé Canada

Efest LCD T1 Battery Tester


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Efest T1 Battery Voltage Tester (Not a Battery Charger)

Li-ion Battery Diagnostic Device

Accurate battery Analysis with clear digital readouts
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.


  • 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