MAXKGO Smart BMS 12S 24V-60V 70A Li-Ion Lifepo4 Lithium 18650 Battery Protection Board With USB Cable,12S                Overcharge protection     Over discharge protection     Temperature protection     Thermal management     Balance function     Battery pack capacity detection     Battery internal resistance detection     Type: A: Without Shell/B: with Shell     Colour: as shown     Material: composite material          Package Contents:     1 * PCBA MKBMS-SS-12S main control board (bare board)     1 * 2.0MM jumper cap     4 * M5*8 Stainless Steel Round Head Screws     4 * M5 copper gasket     4 * 90 degree angled terminal T90-6/5 (copper)     1 * XT30 (female)     /     1 * PCBA MKBMS-SS-12S main control board     1 * HY2.0 single head 10P line     1 * HY2.0 single head 13P line     2 * GH1.25 single head 5P cable     1 * GH1.25-5P to Dupont line     1 * USB cable type-C data cable     1 * 2.0MM jumper cap     1 * 1.3 inch OLED display LCD screen module     1 * 12MM 3-6V key switch     4 * M5*8 stainless steel round head screws     4 * M5 copper gasket     4 * 90 degree angle terminal block T90-6/5 (red copper)     1 * XT30 (female)          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.