YR1030 Battery Internal Resistance Tester DIY Lithium Battery High-Precision Upgrade18650 Battery Testing Machine (F)

About this item 1. Large screen digital display. 2. Soft plastic wrap. 3. Aviation connector, nut is fixed, the connection line does not fall off 4. Built-in lithium battery, standby for up to one year. 5. Equipped with three test accessories to meet different measurement needs. 6.Language: Chinese/English can be switched 7.Charging power supply: built-in 1000mAh lithium battery, charging with 5V/1A charger