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 from happening you should use your batteries with a protection board.
This 4S 40A Lithium-ion Battery Protection Board monitor protects three cells connected in series by monitoring the voltage and current in and out of the battery pack 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 is low like Arduino or Raspberry Pi based projects, 3D printers, Quadcopters, Robotics applications etc. As it can handle current up to 40A you can also use it in slightly higher currents. This Board is suitable for 18650 cells having nominal voltage of 3.6V or 3.7V, so it can provide a nominal voltage of about 14V and maximum voltage of 16.8V.
- Short circuit protection
- Overcharge protection
- Over-discharge protection
- Overcurrent protection
- Overcharge Voltage per cell: 4.2V
- Maximum Working Current: 40A
As the Cells are connected in series the positive of 1st cell will be connected to negative of the 2nd cell and so on hence in picture only the terminals are mentioned.
Dimensions : L*B= 60x45mm
Other Sources : 4s 16.8v 40A BMS 18650 Li ion battery Pack - voltage balance with protection board
1×4S Li-ion Battery Protection Board - 40A PCB BMS
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Manufacturing DefectIf you receive a product with a manufacturing defect, please notify us within the 3 days of you receive the product, supported by proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost. Please note that if your item is already soldered or modified in manner we will not be able to take it under return.
2. Wrong Item Shipped
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.
Limitation of ReturnsWe don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.
We ship to all over India with free shipping on all prepaid orders. For Cash on Delivery orders INR 70 will be charged for orders below INR 599 and INR 20 will be charged for the orders above 599. Please contact to our support team at email@example.com for any question related to shipping.
Please note that the Minimum Order Value is INR 200 for both prepaid and COD orders.
The board is very good
The board is very good