ITEM NAME:5X(TP5000 3.6V 4.2V Charger Module 3.7V Lithium 3.2V LiFePO4 Battery Charg E4O4) 5X(TP5000 3.6V 4.2V Charger Module 3.7V Lithium 3.2V LiFePO4 Battery Charg E4O4) 5X(Application: Thermal Controller Features: TP5000 lithium ion battery lithium iron phosphate battery 2A current 4.2/3.6V can be switched 2A version is the ultimate performance version of TP5000,due to the larger current, the heat will be relatively large, but the fastest charging speed Parameter Input: 4.5-9V (can not over 9v, suggest 5v~6v) Voltage:4.2V/3.6V;error  ±1% (circuit board default 3.6V) Current:2A(change the sampling resistance can be adjusted, the formula is: 0.1 v/current = resistance) Function:lithium battery or lithium iron phosphate battery charging, full charged, the charging will stop, green LED light up The status indicator light is not welded and the user is required to be welded on their own Color:red Material: PC + metal Size:2.6 * 1.9 * 0.6cm/1.02 * 0.74 * 0.23 inch Package Includes: 1 * TP5000 Charger Board 1 * Led 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.).TP5000 lithium ion battery lithium iron phosphate battery 2A current 4.2/3.6V can be switched. 2A version is the ultimate performance version of TP5000,due to the larger current, the heat will be relatively large, but the fastest charging speed.