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  • Shenzhen BAK Technology Co., Ltd.
    Kallista
    I'm going to keep this sweet & short! I have never experienced such excellent customer service with a out of country supplier. This company has gone far and beyond to meet the needs of their customers. Their response time with all my concerns were addressed immediately 100%within 1-24 hours and the shipping time was EXCELLENT!
Contact Person : Dong
Phone Number : +86 13828713564
Whatsapp : +8613828713564

1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module

  • 1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module
  • 1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module
  • 1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module
  • 1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module
  • 1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module
Place of Origin Dongguan China
Brand Name BAKTH / Neutral / OEM
Certification IEC62133
Model Number BAKTH-003S010A-0027-01
Minimum Order Quantity 2 Piece
Price USD 9~14.5 /PC
Packaging Details Industrial Paper Carton
Delivery Time 3-4 weeks
Payment Terms T/T
Supply Ability 10000PCS/Month

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

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Product Details
Type 3S Lithium Battery Protection Board Compatible Interface SMBUS
Battery Type Li-ION Over Charge Detection Voltage(Cell) 4.250V±0.025V Adjustable
Over Discharge Detection Voltage(Cell) 2.500V±0.050V Adjustable Over Current Discharge 8A±0.2A Adjustable
Over Current Charge 8A±0.2A Adjustable Discharging Temperature -30℃~65℃ Adjustable
Charge Temperature -0℃~45℃ Adjustable Dimension 74.3*18.2*3.8 Mm
Max.Discharge Current 5A Sample Available
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3S Li-ion BMS protection board

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18650 battery charger PCB

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lithium battery protection module
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Product Description
1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module

The 3S Lithium Battery Protection Board is a critical safety and performance component engineered exclusively for 3-cell series (3S) lithium battery packs, including Li-ion, Li-polymer, and LiFePO4 configurations. Designed to prevent battery damage and mitigate safety risks, this board acts as a “guardian” for 3S battery systems, ensuring stable operation and extending the lifespan of connected battery packs—making it essential for consumer electronics, industrial devices, and portable power solutions.

Core Protection Functions for 3S Battery Packs
Tailored to 3S battery packs (typical nominal voltage: 11.1V for Li-ion, 9.6V for LiFePO4), this board delivers multi-layered safeguards:
  • Overcharge Protection: Triggers when any cell voltage exceeds 4.25V (Li-ion) or 3.65V (LiFePO4), cutting off charging current to avoid cell swelling or thermal runaway.
  • Undervoltage Protection: Shuts down discharge when a cell drops below 2.5V (Li-ion) or 2.0V (LiFePO4), preventing irreversible battery capacity loss.
  • Overcurrent & Short-Circuit Protection: Instantly blocks high currents caused by short circuits or overloads (e.g., faulty devices), protecting both the battery and connected equipment.
  • Cell Balancing: Automatically equalizes voltage across the 3 cells during charging, ensuring each cell charges uniformly—eliminating “weak cell” issues that reduce overall battery capacity and lifespan.

High Precision & Low Power Consumption
Equipped with high-sensitivity voltage detection chips, the board monitors each cell’s voltage with a precision of ±2mV, ensuring timely and accurate protection responses. Its ultra-low static current (<10μA) minimizes power drain when the battery pack is idle, preventing unnecessary capacity loss during storage or non-use. The board also features a fast recovery function: once the fault condition (e.g., overcurrent) is resolved, it resumes normal operation without manual reset—enhancing user convenience.

Wide Compatibility & Durable Design
This protection board supports 3S battery packs with capacities ranging from 1000mAh to 20000mAh, making it versatile for diverse applications. It is compatible with common lithium battery chemistries (Li-ion, Li-polymer, LiFePO4) and works seamlessly with standard chargers and discharge devices. Constructed with a flame-retardant PCB board and high-quality electronic components, it resists high temperatures (operating range: -20°C to 85°C) and mechanical stress, ensuring reliability in harsh environments (e.g., outdoor tools, industrial sensors).

Versatile Application Scenarios
Ideal for any 3S lithium battery-powered device, including:
  • Consumer electronics: 3S drone batteries, portable power banks, and high-power LED flashlights;
  • Industrial equipment: 3S electric tools (e.g., cordless drills), IoT sensor batteries, and small medical devices;
  • Recreational gear: 3S e-scooter auxiliary batteries, camping lanterns, and RC toy power packs.
About Us

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, we've specialized in battery pack assembly and PCM/BMS design and production. Our 5,000-square-meter factory features automated production lines and SMT assembly capabilities.

1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module 0

Certifications
1S 2S 3S 4S 3A 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board for Drill Motor Lipo Cell Module 1
FAQ
What kind of certificate your battery pack owned?

ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB - our battery packs have reliable quality assurance.

Do you have MOQ?

No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.

What's the warranty? How can we guarantee quality?

Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.

What's the lead time?

Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).

Can we have our own Logo on the battery pack? Can you accept customized battery?

Yes - our professional R&D team can provide customized solutions according to your requirements.

Tags:

bms lithium battery

pcm lifepo4 battery

PCB Circuit Board Assembly