AC17-4S Battery Voltage Tester - 2V-4.5V with TFT Display ,Convenient to Operate

Accurate voltage testing:Fits 2V-4.5V range, with reliable and precise data. Clear TFT display:Equipped with TFT screen, data shows clearly for easy reading. 4S battery compatible:Designed for 4S batteries, meeting their voltage testing needs. Easy operation:Focused functions with simple steps, easy to get started. Practical tool:Size fits testing scenarios, convenient to use and carry.