Note: This BMS is a custom model that comes pre-assembled for easy install (no soldering needed) and is for Lithium-ion (Li-ion)/Lithium-polymer (LiPo), 3.7v/4.2v cells. Description:This BMS balance board is used for a lithium battery pack to equalize voltage and protect the cells. This module charges, discharges, balances, and acts as a low voltage/over charge cutoff. We have pre-installed a screw-based connection block for the easy connection of balance wires to the BMS. The BMS is assembled to use a COMMON Port setup for both charge and discharge at 60A (continuous) and discharge at 100A (burst). The following is the BMS Easy Connection Kit parts list:(1) BMS Board for Lithium-ion (Li-ion)/Lithium-polymer (LiPo)(1) Pre-installed balance wire connection block, 18-24AWG Wire Compatibility (4) Ring Terminal Connectors M3, 8-16AWG for Dual Wire Compatibility (2) Ring Terminal Screws and Nuts *Wires are not included. Balance wires of 18-24AWG will fit in the balance connection terminal and primary wires of 8-16AWG can be used in the ring connectors. You can use a dual wire setup at the main connection points of (B-) and (C-) for heavy duty power draw. 3S 12v (12.6v) Lithium BMS Board BMS Operation Type Common Port (Charge/Discharge) BMS Cell Voltage Type 3S (3.7v/4.2v), 12v – 12.6v Discharge Continuous Amps (Max) Up to 60A, 750W Discharge Surge Amps (Max) Up to 100A, 1250W Discharge Voltage Limit Cutoff 2.7v per Cell, Smart Sense™ Cell 5% Reset Discharge Protection Cutoff Connect Charge or Short B- to P- Charge Voltage 12.6v (Max) Charge Amps (Max) Up to 60A, 750W Charge Voltage Limit Cutoff 4.2v per Cell, Smart Sense™ Cell 99% Balancing Voltage 4.15 per Cell Balancing Amps 60mA per Series Temperature Cutoff Protection Use NTC Probe Connection 85*C Short Circuit Yes, Protection Active Board Size 60mm*42mm Battery compatibility: Voltage of 2.7V (Empty) - 4.2V (Full Charge) Li-ion battery typesCharging input voltage: 12.6VMaximum starting current: 100A (Max)Discharge continuous current: 60A (Max)Charge current: 60A (Max)Board Size: approx. 42*60*7.4mmPackage includes: 1 x BMS Board Li-ion, 1 x Easy Connection Kit, 1 x Wiring Connection Guide Condition is New. Shipped with USPS First Class.