Features: The 18650 Battery Capacity Tester features automatic charges discharge cycles (up to 9 times) and precise two wire internal resistance measurement, ideal for evaluating battery health and performances. Compact plastic design accommodates flat top 18650 cells, with double language interfaces (English/Chinese) and stable charging capability at up to 1A current for versatile testing. Designed for engineers, enthusiasts, and technicians requiring accurate battery diagnostics in electronics repair, hobbies, or energy storage systems maintenance. Perfect for workshops, labs, or home use to verify battery capacity, detect aging cells, and optimize performances in flashlights, power tools, or solar powering devices. simplify battery management with single channel testing, auto mode cycling, and space saving construction – a must have tool for stable 18650 battery analysis and . Specifications: Component : plastic Size: about 107.8x85mm/108x79.4mm(optional) Type: 2 for option Package Includes: 1xBattery analyzers note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.