Li-ion Lithium Battery Charger Protection Board 3S/4S 5A 10A 20A 25A 40A 60A Board Module 18650 BMS for Drill Motor _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Lithium Ion Battery Charger Protection Board 3S/4S 5A 10A 20A 25A 40A 60A Li-ion Lithium Battery Charger Module for Drill Motor _x000D_ Feature: _x000D_ 1. Reliable Lithium Battery Protection: This battery management system (BMS) offers comprehensive protection for series-connected lithium-ion or lithium-polymer batteries, ensuring safe and efficient charging and discharging. _x000D_ 2. Multiple Protective Functions: The BMS board provides safeguards against overcharging, over-discharging, overcurrent, and short circuits, giving you peace of mind during usage. _x000D_ 3. Versatile Applications: Suitable for a wide range of products, including vacuum cleaners, massage device battery packs, backup power for LED lights, solar-powered streetlights, and backup power for surveillance systems. _x000D_ 4. High-Quality Charging Solution: With options ranging from 3S to 60A, this Lithium Ion Battery Charger Protection Board delivers reliable and efficient charging capabilities for various lithium battery configurations, meeting different power requirements. _x000D_ 5. Enhanced Battery Performance: By effectively managing the charging and discharging processes, this module helps extend the lifespan of your lithium batteries, maximizing their performance and overall durability. _x000D_ _x000D_ _x000D_ _x000D_ Specification: _x000D_ Specifications: _x000D_ Standard: 3S 5A Standard, 3S 10A Standard, 4S 20A Standard (optional) _x000D_ Enhance: 3S 20A Enhance, 3S 40A Enhance, 3S 60A Enhance, 4S 40A Enhance (optional) _x000D_ Balance: 3S 25A Balance, 3S 40A Balance, 3S 60A Balance, 4S 40A Balance (optional) _x000D_ _x000D_ Standard _x000D_ 3S 5A Standard: _x000D_ Size: 40 * 15 * 1mm/1.57 * 0.59 * 0.03inch _x000D_ Charging voltage: DC 12.6-14V _x000D_ Maximum working current: 4-5A _x000D_ Maximum instantaneous current: 6-7A _x000D_ Battery over discharge voltage: 2.3-2.6V _x000D_ Battery over discharge protection recovery voltage 4.1-4.2V _x000D_ Battery over discharge current protection point: 5.5~6.5A _x000D_ Battery overcharging protection voltage point: 4.2-4.3V _x000D_ Battery overcharge protection recovery voltage: 4.1-4.2V _x000D_ Applicable options: Suitable for lithium batteries with a nominal voltage of 3.7V and a fully charged 4.2V (including 1865026650 and polymer lithium batteries) _x000D_ 3S 10A Standard: _x000D_ Size: 50 * 16 * 1mm/1.96 * 0.62 * 0.03inch _x000D_ Charging voltage: 12.6V-13V; _x000D_ Maximum working current: 10A; _x000D_ Overcurrent protection: 25A; _x000D_ Static current: less than 6uA; _x000D_ Internal resistance: less than 60m ; _x000D_ Overcharge voltage range: 4.25-4.35v 0.05v; _x000D_ Overdischarge voltage range: 2.7-3.0v 0.05v; _x000D_ Short circuit protection: Protectable, delayed self recovery. _x000D_ Special reminder: _x000D_ Calculation of charging and discharging current for lithium batteries: _x000D_ When using modules, you may encounter situations where the maximum charging and discharging current of the battery is estimated. The following explains the formula for calculating the maximum charging and discharging current of lithium batteries. The calculation formula is: maximum charging and discharging current=Nameplate capacity * C. For example, if a lithium battery has a nominal capacity of 2200mAh and a discharge rate of 2C, its discharge current is 2200 * 2=4400mA=4.4A. _x000D_ 4S 20A Standard: _x000D_ Size: 34.5 * 34.5 * 1mm/1.35 * 1.35 * 0.03inch _x000D_ Overcharge voltage range: 4.25-4.35V 0.05V _x000D_ Overdischarge voltage range: 2.3-3.0V 0.05V _x000D_ Upper limit working current: 10A _x000D_ Working temperature: -40-+50 _x000D_ Upper limit instantaneous current: 20A _x000D_ Quiescent current: less than 30uA _x000D_ Internal resistance: less than 60m _x000D_ Short circuit protection: Protectable, requires charging and recovery _x000D_ Charging voltage: 16.8V-17V _x000D_ _x000D_ Enhance _x000D_ 3S 20A Enhance: _x000D_ Size: 20 * 60 * 4mm/0.78 * 2.36 * 0.15inch _x000D_ Charging voltage: 12.6-13v _x000D_ Continuous discharge current: maximum 20A (if the cooling environment is not good, please reduce the load current for use) _x000D_ Continuous charging current: maximum 10A _x000D_ Applicable options: Suitable for lithium batteries with a nominal voltage of 3.7V and a fully charged 4.2V (including 1865026650 and polymer lithium batteries), capable of carrying electric drills with a starting current of less than