Features: 1. 100 Percent brand new and high quality. 2. It adopts high current and high withstand voltage discharge MOSS. The internal components are brushed with three anti-adhesive (waterproof, anti-static, anti-interference), stable ans reliable quality. 3. The board has short circuit protection function, overcharge protection function, over discharge protection function, balanced voltage function, low conduction internal resistance functions. 4. Suitable for lithium batteries with nominal voltage 3.7V 10-14 strings 5. Applied to rechargeable lithium ion battery, lithium polymer battery. Specification: Condition: 100 Percent Brand New Model: TK14S40A-10M/V1 Single Overcharge Protection Voltage: 5.24±0.025V Single Overcharge Release Voltage: 4.19±0.05V Rated Charging Current: =40A Single-Chip Over-Discharge Protection Voltage: 2.8±0.08V Single-Chip Over-Discharge Release Voltage: 3.0±0.08V Discharge Protection Current: 120±10A With Or Without Short Circuit Protection: Yes Short Circuit Protection Recovery Condition: Load-Disconnect Equilibrium Voltage: 4.25V Equilibrium Current: =26Ma Internal Resistance: =3.5mO Self-Consumption: =50uA Weight: Approx. 108g / 3.8oz Size: Approx. 60 90 10.1mm / 2.4 3.5 0.4in Package List: 1 Battery Protection Balance Board Module 1 Connecting Cable Note: 1. The difference between the split port and the same port: the split port: when charging and discharging, the positive and negative poles are separated; the same port: charging current is the same as the discharge current, and charging and discharging are