20 X18650 For Mak 60A 21V Li Battery Case Bms Balance Charging Pcb Circuit Board Led Indicator Bl1860 Bl1830 Li-Ion Cell Pack

BMS Balanced charging fuction: through the battery management system, ensures that the voltage of each battery cell is basically consistent, ensuring that each battery cell is fully charged, avoiding certain cell voltages being too high or too low, improving energy utilization efficiency, ensuring the performance of the battery pack, and thus extending the service life of the battery pack. DIY (semi-manufactured goods, No battery) Advance notification: (1). To use this product, you need to have some professional knowledge and experience. We do not guarantee that you can use it well. (2). It requires you to have specialized assembly tools. If you do not have these tools, please do not place an order! (3). This product has no after-sales service. After placing an order, it will not be returned! No refund! No Original, 100 Brand New, No Battery Cell !!!!!! Please be kindly noted: If you have any objection to the following two items, please do not order! (1). PCB color may be any color according to our stock, (2). PCB design may change with the same function and performance guaranteed. (3). The number and position of components on the PCB may change and be adjusted. This can fill 10 pieces of 18650 power li-ion batteries,But this is only a shell, there is no battery inside. Preparation before assembly: (1). If a new core is used, please note: a. 18650 power lithium battery core must be selected, b. A group of 5/10 cores must be equipped with resistance and capacitance to make their voltage the same. (2). If the old battery is repaired, please test the voltage at both ends of each cell. If the voltage is different, please charge each cell to the same voltage value. Very important: Ensure that the voltage of each cell is the same before welding PCB. Package include: as the following picture:no battery cell Specification: Material: Plastic , Metal Color: As Shown In The Picture Package Included:1Set Note: 1. Please note that the photo does not show actual size please refer to Description for size details. 2. Please allow differences due to manual measurement thanks. 3. Due to the difference between different monitors the image may not reflect the actual color of the item. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.