About this item [The Charging Interface and the Discharging Interface Are Separated]: The charging and discharging connectors of this lithium battery PCB board adopt a separate design, which is safer and more convenient. [Good Balance Function]: This 13s lithium battery board has an excellent balance function to ensure that each battery cell is fully charged simultaneously. [Safety Overcharge and Overdischarge]: This ternary batteries board can provide protection against overcharging and overdischarging. [Durable Construction]: This battery board with balance is made of high-quality materials, ensuring good wear resistance and durability. [Scope of Application]: This lithium-ion batteries board comes with 1 board and 1 cable, suitable for 13 lithium-ion batteries, and can be used for ternary batteries and other types of batteries. Dimensions: 5.12 x 2.76 x 1.57 inches.