DescriptionThe TrustFire TR-003P4 is a multi-function cylindrical Li-ion battery fast charger, which is made of high-grade fire retardant plastic material, features 4 channels and can be used to charge protected or non-protected Li-ion batteries, such as 10430, 10440, 14500, 16340, 17670, 18500, 18650 batteries. With safe protection design and easy to use, it is really a wonderfuk Li-ion battery charger for choice.Features- Brand: TrustFire. - Model: TR-003P4. - Color: mainly grey. - Shell material: high-temperature resistant hard plastic. - and Multifunction Cylindrical Li-ion Battery Fast Charger. - Compatible with protected or non-protected rechargeable Li-ion battery. - End of charge detection assures the safe and full charging. - Short-circuit and over voltage cut off. - Over voltage or temperature cut off protection. - Complete 4 channel with individual LED charging indication. - Reverse polarity protection.Specifications- Input 1: AC 110-240V, 50-60Hz. - Input: DC 12V, 2A. - Output: DC 4.2V / 4*500mA. - Constant charging current: 500mA10%. - Constant charging voltage: 4.2V1%. - Cut-off current: 60mA10%. - Compatible with the following rechargable Li-ion batteries: 10430, 10440, 14500, 16340, 17670, 18500, 18650 Rechargeable Batteries or with PCB batteries. (Other types of batteries may cause personal injury and damage).Notices1. Used for the first time placed the rechargeable battery, the situation may be difficult to saturation, but is charged with 3-5 times, you can resume normal capacity. 2. Using this item, the charger a little hot is normal. 3. Do not place the item under high temperature (or fire) or humid environment.