- Home Page /
- Electronics /
- Household Batteries, Chargers & Accessories /
- Battery Chargers /
- 2Pcs 3.7V 20A 5S Polymer Lithium Battery Protection Boa...
0 ratings
Item #:
111390705
2Pcs 3.7V 20A 5S Polymer Lithium Battery Protection Board 18650 Lithium Battery BMS PCM Battery Protection Board 55x18mm Red
Item #:
111390705
€ 18
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Wednesday, July 22
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
This high-current lithium battery protection board is perfect for power tools and model aircraft, providing essential protection and improved performance!
Buy Now Pay Later
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Current Capacity
Supports up to 20A continuous current, ensuring efficient power delivery for high-drain applications, enhancing device performance and safety.
Wide Compatibility
Designed for 5-series 18650 lithium batteries, making it suitable for a range of DIY projects and battery packs, catering to various user needs.
Compact Design
Measuring only 55x18mm, this protection board fits easily into tight spaces, perfect for portable devices and battery compartments.
Product Details
| Item Weight | 0.2 lbs (90 grams) |
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?
-
DIY Battery Builders
Ideal for enthusiasts constructing custom lithium battery packs for various applications requiring reliable protection.
-
Electric Vehicle Users
Suitable for electric bike or scooter users needing a robust BMS for their 5s lithium configurations.
-
Solar Energy Systems
Beneficial for solar battery storage, ensuring cells remain within safe operating limits during charge and discharge.
-
Low-Current Applications
Inappropriate for devices that operate at low current levels, as it may not offer efficient performance.
-
Non-Lithium Users
Not suitable for applications utilizing other battery chemistries, such as NiMH or lead-acid.
-
Beginner Users
Potentially confusing for beginners without proper knowledge of battery management systems and safety protocols.
Product Description
2Pcs 3.7V 20A 5S Polymer Lithium Battery Protection Board 18650 Lithium Battery BMS PCM Battery Protection Board 55x18mm Red
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a 3.7V 20A 5S Lithium Battery Protection Board?
Answer: The 3.7V 20A 5S Lithium Battery Protection Board is designed to safeguard your lithium battery pack, ensuring safe operation by preventing overcharge, over-discharge, and short circuits. This board is essential for maximizing battery life and performance, especially in applications like electric vehicles, power banks, and larger battery stores where reliability is crucial. -
Question:
How does the protection board function?
Answer: This protection board operates by monitoring the voltage and current flowing through the battery cells. It disconnects the battery from the circuit if any cell goes beyond its safe limits, thus preventing damage. This is particularly important in high-drain applications, where cells can easily become unbalanced, leading to potential system failures. -
Question:
What is the size of the protection board?
Answer: The dimensions of the protection board are 55mm in length and 18mm in width, making it compact and suitable for various applications. Its size allows it to fit easily into smaller electronic devices or installations, helping maintain a neat and organized setup. -
Question:
What does BMS and PCM stand for?
Answer: BMS stands for Battery Management System, while PCM refers to Protection Circuit Module. Both terms are often used interchangeably in the context of battery protection. The BMS not only prevents overcharging and discharging but also balances the charge among the cells, enhancing the overall battery pack's efficiency. -
Question:
Can this protection board be used with any battery?
Answer: This board is specifically designed for use with 18650 lithium batteries in a 5S configuration, which means it is suitable for packs consisting of five cells connected in series. Using it with non-compatible batteries may result in inadequate protection and could damage the batteries. -
Question:
What applications are suitable for this protection board?
Answer: The 2Pcs 3.7V Lithium Battery Protection Board is ideal for electric bikes, drones, and other gadgets that require reliable performance from lithium battery packs. It's particularly beneficial for applications that demand high power and efficiency, such as renewable energy storage systems. -
Question:
How many protection boards come in a package?
Answer: Each purchase includes two protection boards, providing a cost-effective solution for building multiple battery packs or having backup options. This is advantageous for hobbyists or manufacturers needing to maintain several devices simultaneously. -
Question:
What safety features does this board provide?
Answer: This protection board offers critical safety features, including overcharge protection, over-discharge protection, and short circuit protection, ensuring that the battery does not exceed safe operational limits. These features are vital for preventing battery damage and potential hazards in devices and installations. -
Question:
Is it necessary to use a protection board with lithium batteries?
Answer: Yes, using a protection board is highly recommended to ensure the safety and longevity of your lithium batteries. Without it, there's a risk of overheating, fire, or battery degradation. Safety measures are particularly essential if you are using the batteries in high-demand settings or where failure could lead to significant issues. -
Question:
Where can I buy the 2Pcs 3.7V 20A 5S Polymer Lithium Battery Protection Board?
Answer: You can purchase the 2Pcs 3.7V 20A 5S Polymer Lithium Battery Protection Board from Ubuy. They offer a range of electronic components, and you can easily find this specific product for your battery management needs.
Be In Your Mind Battery Chargers Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
€ 18
Order now and get it around Wednesday, July 22
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Includes 2 pcs of high-current protection boards.
- Supports 20A continuous and 40A short-term current.
- Optimized for power tools and model aircraft applications.
- Ensures battery safety by preventing overcharging and excessive discharge.
- Compact size of 55x18mm for easy installation.
- Enhances overall battery performance with proper matching.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.