Aideepen | BMS 2S 50A High-current 3.7V Li-ion Lithium Battery Charger Protection Board With Balance For 21700 Battery Power Tools

Features:1. Capable of sustaining a high output current of 50A to meet the demands of high-power devices2. Utilizes highly reliable components for stable operation and low temperature rise3. Built-in passive charge balancing function to extend battery pack lifespan4. Features built-in input reverse connection protection for enhanced safety5. Constructed with high-quality materials to ensure product reliabilityProduct SpecificationsInput reverse connection protectionPassive balancing functionSuitable for 2S 3.7V batteries50A output capability4.15V overvoltage release (single cell)Quiescent current: 1.8μASleep current: 0.2μAProduct DescriptionThis product is a low-power battery pack protector designed for primary protection of two lithium-ion or polymer rechargeable batteries connected in series. It features a balancing function, but the balancing current is only slightly over 20 mA, which is sufficient only to eliminate the cumulative voltage difference caused by simultaneous cycling. Passive balancing cannot compensate for significant capacity discrepancies; such cases require professional active balancing.Important Notes:1. Before purchasing, please verify that the voltage of each cell in the battery pack is normal! Replacing the protection board will be ineffective if the battery is faulty! No returns or exchanges for soldered products!2. Before installing the protection board, carefully verify that the battery’s positive and negative terminals correspond to the corresponding terminals on the protection board. Incorrect polarity connection will damage the module!3. This lithium battery protection board is not compatible with lithium iron phosphate (LiFePO4) batteries, xenon lights, high-power cordless drill battery packs, electric fishing machine battery packs, electric bicycle battery packs, or children’s vehicle batteries. It is also generally incompatible with motors or motor-driven products. Customers purchasing for the aforementioned applications should take note!4. The battery must be charged using a charger specifically designed for lithium-ion batteries. Never use a lead-acid battery charger, as charging with lead-acid voltage may cause high-voltage breakdown of the protection board’s MOSFETs, resulting in the protection board failing to prevent overcharging. The charging voltage for a polymer battery is equal to the number of battery cells in series multiplied by 4.2V.Package ContentsModule *1