4 strings of 12.8V 14.8V inverter high current 100A,4 strings of 3.7V lithium battery protection board with balanced charging. Adding a normally closed temperature sensing switch can extend the temperature protection function. The 0R resistor next to the solder joint should be removed. Colour:Silver + green Material:ABS Size:About 7*7*2cm Package Contents: 1 * lithium battery protection board 1 * Cable 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.