Description: 100% brand new and high quality Feature: Support multi-layer overlay to increase power and capacitance. Support subsequent expansion modules, support single-sided or double-sided battery. High current wiring, Full-chip high-current protection board and battery holder. High Conversion efficiency, Support multi-layer balanced release. With over-voltage protection function to prevent overshoot or over-discharge. With voltage equalization function, to ensure that multiple sets of voltage are the same, increase the life of the battery pack. The protection plate can provide a balance equalization function for the entire multi-layer battery case, without having to add a protection plate to each layer. Easy and simple to use and operate, no other tools needed to install. Installation: Install the battery according to the positive and negative sides on the circuit board. Be careful not to reverse it. Specifications: Item Type: Battery Holder Protection Board Material: plastic+metal+electronic components Size: 151x85mm/5.9x3.3in Color: As shown Optional Type: 1: Single-sided battery holder, 2: Double-sided battery holder, 3: Single-sided battery holder with protection board Voltage: 24V Current: 40A Quantity: 1 PC Warm Tips: 25.2v charger is needed for 6S charging. It is recommended that the charging current of each layer should not exceed 2A, otherwise the battery may become hot (for example, choose 2A charger for only one layer, and 4A charger for two layers). Do not put on the metal table top to use, pay attention to insulation do not short circuit. The battery faces up the circuit board, all the batteries face the same cannot interleave. Do not connect the wrong power supply, the circuit board is marked, pay attention to the observation. Note:(Battery not included) Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Set x Battery Holder Protection Board Kits (Not include the balance line shown in the picture)