1、This board has short-circuit protection function, overcharging protection function, overcurrent protection function, balanced voltage function. 2、Low-conduction internal resistance, high current, high voltage discharge MOSS. 3、Internal components are brushed with protecting rubber which is waterproof gas, anti - static, anti-interference, stable and reliable. 4、Application: rechargeable lithium ion battery, lithium ion polymer battery. 5、Suitable for lithium batteries with nominal voltage of 7v 13-17 series. Features: This board has short-circuit protection function, overcharging protection function, overcurrent protection function, balanced voltage function. Low-conduction internal resistance, high current, high voltage discharge MOSS. Internal components are brushed with protecting rubber which is waterproof gas, anti - static, anti-interference, stable and reliable. Application: rechargeable lithium ion battery, lithium ion polymer battery. Suitable for lithium batteries with nominal voltage of 3.7v 13-17 series. Specification: Model: ATK17S-12M/V4 Weight: 136g/ 4.8oz Monomer overcharge protection voltage: 4.25± 0.025V Monomer overcharge release voltage: 4.19± 0.05V Rated charging current: ≤50A Monomer over-discharge protection voltage: 2.8± 0.08V Monomer over-discharge release voltage: 3.0± 0.08V Rated discharge current: ≤50A Discharge protection current: 150±10A Short circuit protection or not: Yes Short circuit protection condition: disconnect the load Balanced voltage: 4.25V Equilibrium current: ≤13MA Resistance: ≤3mΩ Power consumption: ≤50μA Size: 70*105* 10.1mm/ 2.8* 4.1* 0.4inch Package List: 1 x Lithium Li-ion Battery Protection Board