Lithium-Ion batteries though have high energy density and light in weight, are very dangerous if abused i.e., if you overcharge or undercharge the battery or draw more current than it can provide then it can explode damaging the surrounding or even potentially harm the humans around. To prevent this to happen you should use your batteries with a protection board. This 1S Lithium-ion Battery Protection Board monitor and protect a cell by monitoring the voltage and current in and out of the cell and if any unsafe condition happens then it will cut off the battery from the load or the charger. This can be used in any DIY project where the current does not exceed 3A like Arduino or Raspberry Pi based projects, 3D printers, Robotics etc. It is very suitable for 18650 cells which are generally used in these applications.
Specifications
Product Description

To connect your cell of nominal voltage 3.7 V to the protection board you need to connect the positive terminal to the B+ and negative terminal to B- and common terminal between the two cells to Bn. To connect the load or charger to this board connect positive terminal to P+ and negative terminal to P-. make sure the two positive and negative wires do not get shorted.
Package Contents
1×1S 3A BMS Module / 3.7V Lithium Battery Protection
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.
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Note: The minimum order value for COD orders is ₹500.