Specially used to measure 18650 battery capacity. The integration of charging and discharging eliminates the tedious operation of disassembling and assembling the battery to replace the charging and discharging of the device. The size of the discharge current can be switched and it is convenient to use. Small size, easy to carry. stable performance. Product name: 18650 battery capacity internal resistance tester charging and discharging integrated version Working voltage: DC5V Detection voltage: ≤DC5V Capacity measurement range: 0~99999mAh Energy measurement range: 0~99999mWh Battery internal resistance measurement: support Display real-time voltage: support Display real-time current: support Display real-time power: support Log run time: support Working mode indication: support Current Status Indication: Supported Simultaneous discharge: not supported (simultaneous discharge of 18650 battery Test① and external power supply Test② is not supported) Discharge load: 10W 8QJ cement resistance x 2 Discharge current selection: x0.5A or ~1A Charging interface: Type-C External discharge interface: Type-C Preset discharge stop voltage: 3V (not adjustable) Preset full stop voltage: 4.2V (not adjustable) Data storage: The measurement data is not saved, and the accumulated data is automatically cleared when the power is turned off or when the working mode is switched. Product size: 108x85x24mm Type: 18650 lithium battery capacity internal resistance tester color:Green Material:plastic Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!