Upgraded version 18650 Lithium Battery Capacity Tester Module Product features: The product supports single channel capacity and internal resistance measurement Supports individual charging and discharging, up to 9 charging and discharging cycles in automatic mode: 11 levels of adjustable stopping and discharging voltage Color: green Material: PCB DC two-wire for internal resistance testing, switchable between English and : Maximum charging and discharging is about 1A Upgrade points: 1. and English interface adjustable 2. Adjustable 11 levels of stopping and discharging voltage 3. Support 1-9 automatic 4. Increased completion status indication 5. Charge measurement increased. 6. The new version also supports testing 21700 batteries, with 21700 battery holder, you can achieve DIY transformation Caution: Please that the environment is open and uncovered, if you can a fan to dissipate heat, it is better. In order to that the battery firmly, holders use compact battery holders, suitable for flat-head battery measurement! Does not support the charging of lithium iron phosphate batteries Package Contents: 1 x Tester Module Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.