and high quality Super strong protection. Lnput: 100-240VAC, 50 / 60Hz; Output: 42V 4A; Charging Indicator: Charge red light is full of green light; Safety protection: OVP / OCP / Overload protection / Short-circuit protection; Max power: 150W Connector: DC 5.5mm x 2.1mm Purchase Notes: Please make sure if your battery model matches the Tangspower charger, and make sure that the positive and negative poles of the Tangspower connector are the same as your charger. If the positive and negative poles are different, the Tangspower charger will always display a green light and make it fail to charge. If you are using a multimeter to test the charger, please fully charge the multimeter for testing. There will be errors when the multimeter is not fully charged. Tangspower Charger Use and Maintenance: 1. When charging, firstly connector to the battery, then connect to the AC; After full, cut off AC, then unplug the battery. If you pull the battery plug first when charging, especially when the charging current is large (red light), it is very easy to damage the charger. 2. When the LED light turns green, please keep charging for 2-3 hours. 3. Please do not run out of battery power, then the charger. Otherwise, the battery cannot be protected or even damaged. 4. Long-term superficial battery discharge, about 3 months, for a deep discharge, It is the so-called re-illumination, which is favorable for the long-term motionless activation material in the deep part of the battery. Bright means driving the controller battery action undervoltage protection. 5. Please use the charger in a dry place in time. 6. When you do not use the charger, do not always connect the power supply. 7. Please confirm the battery, Because it is used to charge the lithium battery. Don't use the charger on the LiFepo4 battery, otherwise the charger will get incredibly hot. Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Colour: black Material: PC+ABS Package Contents: 1 * Lithium battery charger(DC head) 1 * US Plug Only the above package content, other products are not included. Note: Light shooting 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.