Application suggestions: Charger, power supply and other device manufacturers want long-term discharge or batch aging test of products, please choose LD35 (LD25 is ) "SET" button:press "SET" to switch display status, Press and hold the button to set the load output recovery mode after protection removed. Application: Assist to measure Micro-USB cable good or not. Assist to measure Type-C cable good or not. Assist to measure output current capacity of charger good or not. The usage of large batch ageing test at the charger factory. NOTE: This product has no reverse connection protection, the input polarity cannot be reversed, otherwise the product is permanently damaged and cannot be repaired. "ON/OFF" button: press the button to open or close output. Press and hold the button to set the boot default status of open or close. NOTE: Please check the output current of power bank carefully. The current of the general power bank is generally small, so adjust smaller current when the load was used., Weight: 0.12566348934 pounds, Manufacturer: tiyao