Simple operation, the charging process is completed in Voltage display function, no need for external adapter, detect at any time Ultra-high charging accuracy, the error is within 10mV. Multiple protection functions to the safety of batteries and users Old battery automatic repair function. Newly designed balance architecture and algorithm, no need to discharge, saving energy warn: Before charging, please make sure the power of the adapter is sufficient ( 30W ). Before charging, please confirm the voltage range of the adapter ( 9V-16V). This charger is only suitable for charging Li-ion or Li-polymer batteries. At any time, only one battery balance port of the charger can be connected. It is forbidden to use 2 or more battery balance ports at the same time Charging function description After inserting the adapter, the charger will make a "beep" sound and the display will display; Insert the battery, the charger will beep twice and start charging. The display cycle shows the total battery voltage and the voltage of each battery; After the battery is fully , the charger will automatically stop charging, the display will display and flash, and the buzzer will prompt once every 5 seconds. Voltage display function description Insert batteries (no adapter required) and display cycles through total battery voltage and voltage per cell error code When the charger detects an error, the charging stops, the display shows the error code, the buzzer alarms, and it resumes working after reconnecting the adapter. Due to different batches, there may be differences in the appearance, color, and printing of the product, which will not affect its use. Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage: AC110V Colour:blue Material:Metal Package Contents: 1 x Balance Charger 1 x Cable 1 Adapter 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.