This 3S 40A Li-ion Battery Protection Board BMS is designed to protect lithium-ion batteries that have a normal voltage of 3.7V and a fully charged voltage of 4.2V. The Li-ion Battery Protection Board is basically a protection IC for 3-serial-cell lithium-ion/ lithium polymer rechargeable batteries. It protects them from overcharge, over-discharge, overcurrent, and Short circuit by using the SEL pin for switching.
Applications:
The 3S 40A Li-ion Battery Protection Board is equipped with 10 low internal resistance MOSFETS and provides a continuous discharge current of 40A and an equalizing current of 100mA. As a result, it can be used with electric drills, sprayers, LED lights, and low-power inverters (400W).
Specification of the 3S 40A Li-ion Battery Protection Board

Package Includes:
1 x 3S 40A Li-ion Battery Protection Board BMS
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
If you receive a product damaged during shipment, please notify us within 3 days of receiving the product, supported by proper pictures and a description. Once our support team accepts the return, we will provide a replacement or a complete refund, including the return shipping cost.
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
We don’t accept returns for products damaged due to improper use. Moreover, we don’t accept returns if the ordered product is not suitable for a specific application. Please read the product specifications and datasheet carefully before placing an order. Returns are accepted only within 3 days from the date of delivery.
We ship all over India with free shipping on all prepaid orders above ₹500. For Cash on Delivery (COD) orders, ₹80 will be charged for orders below ₹599 and ₹30 for orders above ₹599.
For any questions related to shipping, please contact our support team at support@quartzcomponents.com.
Note: The minimum order value for COD orders is ₹500.