PCM-S5A4 18.5V4A for Li-Ion Battery in 5 Series Connection5S--9S BMSPCM 5S 4A Protection Circuit Module (PCM) for 18.5V Li-Ion Battery Pack (4A limit) Protection Circuit Module Specifications For 18.5V Li-ion/Li-Po Battery Pack Model:PCM-S5A4 Over-charge protection voltage 4.280±0.025V Over-discharge protection voltage 3.00±0.05V Over-current protection 10±2A Maximal continuous Discharging current 4A Maximal Current consumption 20uA Short circuit protection Automatic Recovery Protection circuitry resistance (B- TO P-) ≤80mΩ Dimension 46mm(1.8″) x 30.5mm(1.2″) x 3mm(0.1″) Weight 3.4 grams (0.12Oz) P+/P-/T P+ = Charge+ / Discharge + P- = Charge- / Discharge – T = NTC Thermistor Specification For more information, tell us kindly.