3.08 €
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3S 40A PCB Protection Board for Lithium Battery
Brand: satkit
3.08€
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3S 40A PCB Protection Board for Lithium Battery - Improved Version
This PCB protection board is an advanced solution designed to protect lithium batteries in 3S configurations (three cells in series). It is ideal for batteries with a nominal voltage of 3.6V and 3.7V, including common models such as 18650, 26650 and lithium polymer batteries. Its improved design offers reliable protection to prevent damage from overcharge, over-discharge and short circuits.
Main features
- Nominal voltage: Compatible with 3.6V and 3.7V lithium batteries.
- Charging voltage: Between 12.6V and 13.6V.
- Continuous discharge current: Up to 40A (it is recommended to reduce the current if the cooling environment is insufficient).
- Continuous charging current: Up to 20A.
- Material: High-quality PCB.
- Colour: Green.
- Size: 41 x 55 x 3.4 mm.
Specifications and use
For successful start-up, it is recommended to use three batteries with 15C-20C power or six batteries with 10C-15C power. Installation must strictly follow the wiring map with voltages 0V, 4.2V, 8.4V, 12.6V and 16.8V, avoiding intentional short circuits.
When using the board with a load, it is advisable to connect a non-polar capacitor with a capacity between 10uF and 100uF and a voltage above 25V between the positive and negative terminals to avoid reverse spikes that could damage the system.
If four battery groups are used in series, it is essential to ensure that the voltage of each group is the same. Otherwise, each battery should be charged separately before connecting them in series.
Includes
- 1 x Improved 3S 40A PCB protection board for lithium battery.
Compatibility
Compatible with 3S lithium batteries, including 18650, 26650 and lithium polymer batteries with nominal voltage of 3.6V and 3.7V.
Benefits
- Effective protection against overcharge and over-discharge.
- High current capacity for demanding applications.
- Compact and durable design.
- Easy installation following the recommended wiring diagram.
- Compatible with 3S lithium batteries (3.6V and 3.7V), including 18650 and 26650
- Continuous discharge current up to 40A for high performance
- Continuous charging current up to 20A for safe charging
- Compact dimensions: 41x55x3.4mm, green colour
- Includes recommended capacitor to avoid reverse spikes
- Requires 15C-20C batteries for optimal start-up
- Installation following wiring diagram from 0V to 16.8V
- High-quality PCB material for durability and protection
Customer Questions & Answers
What are the dimensions and approximate weight of the board, and what is included in the box?
The board measures 41 mm x 55 mm x 3.4 mm and is made from green PCB material. The package contains only 1 protection board; cables, connectors and a printed manual are not included. The typical weight of a board of these dimensions is under 25 g.
What current limitations or overheating issues should I consider during installation?
The recommended maximum continuous discharge current is 40 A and the charge current is 20 A. It is advisable to reduce the current if ventilation is inadequate to avoid overheating the PCB. Exceeding these limits may cause premature activation of protection or damage to the board. It is recommended to operate within a safe range and check temperatures during initial use.
How does this 3S 40A protection board compare with standard lower-current models in high-demand scenarios?
In high-demand scenarios, this board supports up to 40 A continuous discharge, whereas standard models usually offer between 10-20 A. The higher amperage allows it to power motors and higher-power devices, although it requires batteries capable of delivering that current (minimum 15C-20C per cell). It is suitable for demanding applications as long as thermal limits are respected.
What type of batteries is this protection board compatible with?
It is compatible with 3S lithium batteries, including 18650, 26650 and lithium polymer batteries with nominal voltage of 3.6V and 3.7V.
What is the maximum discharge current this board can handle?
It supports a maximum continuous discharge current of 40A, although it is recommended to reduce it if the cooling environment is not suitable.
What should I keep in mind when installing the board?
The wiring diagram with voltages 0V, 4.2V, 8.4V, 12.6V and 16.8V must be followed strictly, avoiding short circuits. In addition, it is recommended to connect a non-polar capacitor to avoid reverse spikes.
Does it include any additional accessories?
It includes 1 improved 3S 40A PCB protection board. A non-polar capacitor (not included) is recommended to improve protection during charging.
Can I use batteries with different voltages in series?
It is not recommended. If the voltages are not the same, each battery should be charged separately before connecting them in series to avoid damage.
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