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4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection
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4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection
High-accuracy voltage detection circuit, over-current protection, and MOS transistor control for efficient battery management.
4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection

4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection

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High-accuracy voltage detection circuit, over-current protection, and MOS transistor control for efficient battery management.
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What Stands Out

Comprehensive Protection
Equipped with advanced overcharge, over-discharge, and short circuit protection features, ensuring safe operation and longevity of 18650 batteries in various applications.
High Performance
Supports 20A continuous discharge for effective power management in demanding devices, providing users with reliable energy delivery and enhanced battery efficiency.
Versatile Application
Designed for 14.8V configurations, this BMS module is ideal for a range of devices, making it a versatile choice for hobbyists and professionals alike.

Product Details

MELIFE Shop 4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection online at a best price in India. B09BNFY4RB
Package Dimensions4.88 x 3.66 x 0.35 inches (12.4 x 9.3 x 0.9 cm)
Item Weight0.634 ounces (17.97 grams)
Date First AvailableAugust 2, 2021
ManufacturerMELIFE
Country of OriginThis item will be imported from US
What is in the box4PCS 4S 20A 14... For more details, please check description/product details

Dangerous Goods

To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.

Who Should Buy?

Suitable For
  • Hobbyist Builders

    Ideal for DIY enthusiasts creating custom battery packs for electronics or robotics projects requiring efficient power management.

  • Electric Vehicle Users

    Great for individuals building or maintaining electric bikes or scooters where lithium battery safety is essential.

  • Battery Recyclers

    Suitable for those involved in recycling or repurposing old lithium batteries needing protection circuitry to ensure safety.

Not Suitable For
  • Large Scale Applications

    Not suitable for high-capacity applications requiring more robust power management solutions beyond 20A limits.

Product Description

4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module 16.8V with Overcharge Over Discharge Short Circuit Protection

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Customer Questions & Answers

  • Question: What is the purpose of the BMS in the 4PCS 4S 20A 14.8V Lithium module?

    Answer: The Battery Management System (BMS) in this module is designed to monitor the charging and discharging of the battery cells. It ensures balanced charging across the four cells, preventing overcharging and discharging, which can lead to reduced battery life or even hazardous conditions. By managing these critical aspects, the BMS enhances safety and prolongs the lifespan of your lithium batteries, making it ideal for applications like electric vehicles, drones, and power tools.
  • Question: How does the overcharge protection feature work?

    Answer: Overcharge protection in the BMS is executed through sophisticated voltage monitoring. When any battery cell exceeds its specified voltage limit, the BMS automatically disconnects the charging circuit, preventing further current from exceeding safe levels. This feature is crucial for maintaining battery integrity and avoiding potential risks such as thermal runaway, making it indispensable for high-reliability applications like solar energy storage systems and electronic devices.
  • Question: What does the PCB protection module do?

    Answer: The PCB protection module offers essential safeguards for lithium batteries by protecting them from faults such as overcurrent, short circuits, and temperature anomalies. By immediately reacting to faults, the BMS can prevent damage to the cells, ensuring safe operation. This makes the module suitable for applications where constant monitoring is critical, such as in robotics or consumer electronics.
  • Question: What types of batteries are compatible with this module?

    Answer: This module is specifically designed for 18650 lithium-ion batteries, facilitating a configuration of 4 cells in series (4S). Each cell's voltage can collectively reach 14.8V when fully charged and 16.8V in a protected environment. This compatibility makes it ideal for various applications like power banks, electric bicycles, and scooters where 18650 cells are a standard choice.
  • Question: Can I use this BMS with 3.7V lithium-ion batteries?

    Answer: No, this BMS is tailored for use with 14.8V (4S) lithium batteries, which utilize four 3.7V cells in series. Using it with batteries that do not match the specified voltage could lead to improper operation or damage. For 3.7V batteries, a different BMS suited for single-cell or 3S configurations would be more appropriate, ensuring standard operation and safety.
  • Question: What do the '20A' specifications imply for my usage?

    Answer: '20A' indicates the maximum continuous current that the BMS can handle without failing. For projects requiring significant power, like high-drain devices or electric bikes, ensuring that your load does not exceed this limit is crucial. If you plan to use this BMS in your devices, verify that your battery’s discharge rate and overall design align with this 20A specification to maintain performance and safety.
  • Question: Is thermal management included in the module's features?

    Answer: Yes, thermal management is a critical part of the BMS. This module is equipped with thermal sensors that monitor the battery's temperature, and if it rises above safe levels, the BMS intervenes by reducing or disconnecting the charge or discharge current. Effective thermal management is vital in preventing overheating, especially during high-load applications like electric vehicles or power tools.
  • Question: How do I connect this BMS to my battery pack?

    Answer: Connecting the BMS to your battery pack requires a basic understanding of wiring. Each of the four cells needs to be connected to the BMS according to the provided schematic, ensuring positive and negative terminals are accurately aligned. Misconfiguration can lead to performance issues or damage. Properly connecting the BMS allows it to effectively manage each cell's voltage and current, essential for safe operation in applications like drone batteries or energy storage systems.
  • Question: What features enhance the safety of this BMS module?

    Answer: This BMS offers multiple safety features, including overcharge, over-discharge, and short circuit protection. Each of these features works in tandem to prevent voltage spikes, excessive current draws, and potential hazardous situations. By integrating these protective measures, the module ensures that your battery systems operate reliably, making it an excellent choice for applications such as home energy storage or high-performance electronics.
  • Question: Where can I buy the 4PCS 4S 20A 14.8V Lithium BMS PCM Protection PCB Board?

    Answer: You can buy the 4PCS 4S 20A 14.8V Lithium for 18650 Battery BMS PCM Protection PCB Board Module at Ubuy. Ubuy offers a diverse selection of electronic components, including this specific BMS module, making it easy to find what you need for your projects.

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“I received the product properly packed and without any damage. If you can provide a video showing how to assemble the parts, it would be a great help. Thanks & Regards, Siva Prakash.”

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Features & Benefits

  • 4Pcs High-accuracy voltage detection circuit
  • Built-in three-stage over-current detection circuit
  • Over Charge Voltage: 4.25-4.35v¡À0.05v
  • Over Discharge Voltage: 2.3-3.0V ¡À 0.05V
  • Widespread application in various products
  • Specific guidelines for battery discharge rates

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