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14.8V 16.8V 20A Peak 4S Li-ion BMS PCM Battery Protection Board Off-Board DC DC Converters for 18650 Li Batteries for Lithium

Brand Name:	creatall
Model Number:	4S 20A, 4S 14.8V 20A peak li-ion BMS PCM
MOQ:	100
Price:	$0.80-1.06

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

Guangdong, China

Mounting Type:

Standard

Description:

Battery Protection Board

Operating Temperature:

-40+85

Dissipation Power:

Battery Protection Board

Application:

Computer

Condition:

New

Origin:

Mainland China

Highlight:

4S Li-ion BMS protection board

wholesale bms board supplier

bms battery protection board manufacturer

Product Description

Products Description

Size: 35*35*3mm
Upper limit working current: 8A
Upper limit instantaneous current: 20A
Overcharge voltage range: 4.25V+0.05V
Over discharge voltage range: 2.5V+0.05V
Charging voltage: 168V~17V
Quiescent current: less than 30uA
Short circuit protection: can be protected

Delayed self-recovery product features:
1. Such as overcharge protection/overdischarge protection/short circuit protection/overcurrent protection
2. With overcurrent protection, reasonable design, does not affect the battery pack
3. With spot welding design, easy to assemble
4. The static power consumption is small, and the overall power consumption is less than 30 microamps.

Precautions:
The lithium battery protection board cannot be used for lithium iron phosphate batteries, xenon lamps, hand drill battery packs, electric fish machine battery packs, electric bicycle battery packs, children's car batteries, motors or products with motors, 1W fisheye LED lights.
For products with a current above 3A, the battery discharge rate should be above 3C.
Rate formula: 1C rate battery, 2000 capacity equal to 2AH*1=2A working current 3C rate battery, 2000 capacity equal to 2AH*3=6A working current
1. Strict wiring OV(B-), 3.7V(B1), 7.4V(B2), 11.1V(B+) do not intentionally short circuit!
2. After the line is connected, it needs to be charged first, and then there will be output
3. When connecting 3 groups of batteries in series, please ensure that the voltage of each group of batteries is the same, if not, please fully charge each group of batteries separately and then use them in series. During the discharge test, the battery with the fastest voltage drop is the poor battery.
A note: don't mix good batteries with bad batteries!
The closer the capacity/internal resistance of the 3 batteries is, the better! (The effect of 2 good batteries + 1 bad battery =
the effect of 3 bad batteries). indivual
In use, the battery will heat up, that is, the battery rate is not applicable. In this case, if the battery cannot be used for a
long time, the battery will be damaged quickly.
Applicable products: massager battery pack, LED light backup power supply, 12V electronic products, solar street light battery pack, monitoring backup power supply, and other products.

Contact us
Wechat：	alvacheng88	Mobile：	+86-13689587416
Skype：	alvacheng1	E-mail：	leo@creatall.com

Company Profile

Certificates & Production Processes

Packing & Delivery

1. Normal packaging.

2. Export carton.

3. Custom packing.

4. All orders are will be shipped within 3-25 days after customers confirmed payment.

Payment&Shipping

PAYMENT Standard payment terms: pay 30% deposit in advance, 70% balance before shipment. Online trade assurance order, all is up to you. More payment terms could be provided! (T/T,PAYPAL WESTERN UNION) SHIPPING After-sales Service: 100% strict inspection and test before shipment. Replace in one weekonce original defective goods found on arrival. Enjoy one year warranty.

Customer Reviews

This is a part of good feedback from our customer, all is 5 star. It is prove that we are excellent supplier and also prove we own
high quality products and professional services.

FAQ

Q: What is the minimum order quantity for your products? A: If you need a small order, please contact us Q: How long is your delivery time? A: The product will be sent within 3 days after payment is confirmed, and the delivery time is 3 to 6 days Q: Do you test or inspect all items before delivery? A: Yes, we tested and checked all items before shipment. Q. What is your warranty? A: 60 days after receiving the goods. Our products are 100% tested before being shipped. If the goods are defective, please notify us within 3 days after delivery. Any item must be returned as is to be eligible for a refund or payment. The buyer is responsible for all freight incurred. Q: How do I pay for the order? A: We accept wire transfer, Western Union, Pay Pal, , escrow (if you prefer other methods, please contact us)

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

3 stars

2 stars

1 stars

All Reviews

Tan Wei Ming

Singapore Apr 10.2026

Helpful (612)

Reliable TP4056 charger board. Compact size, Type-C & Micro USB work well. Ideal for DIY battery projects, will repurchase.

Lukas Müller

Germany Jan 23.2026

Helpful (169)

Sehr gutes Lademodul! Doppelanschlüsse funktionieren stabil, perfekter Überladeschutz für 18650 Batterien. Einfach zu löten und installieren, sehr zufrieden.

Naomi Suzuki

Japan Feb 13.2025

Helpful (213)

This 5S BMS board is perfect for my solar lighting battery. It protects against overcharging well, and the voltage monitoring is accurate. It’s kept my battery in great condition.

Tags:

CA-3S-25A-B-T Li-Ion 18650 BMS PCM Battery Protection Board BMS PCM With Balance For Li-Ion Lipo Battery Cell Pack Module DIY

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