10 string 36V 37V 42V lithium battery power protection board Overcharge, over discharge, over current and short circuit protection Same port 15A discharge current With heat sink and 300mm cable Colour:Silver Material:ABS Size:63 x 32 x 10mm Package Contents: 1 x Protection Board Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.