ITEM NAME:3x 1S 3.7V 2.5A PCB BMS Protection Board for 18650 Li-ion Lithium Battery Cell Z a.imagelink a:hover.imagelink {color:#db3606;.Overcurrent detection current: 5A. Main IC using original "precision" imported components. 3pcs x Protection Board. B+ connect to battery+. B- connect to battery-. P+ for battery output input +. P- for battery output input -.