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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

4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices

  • 4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices
  • 4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices
  • 4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices
  • 4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices
  • 4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices
Place of Origin Dongguan China
Brand Name BAKTH / Neutral / OEM
Certification IEC62133
Model Number ITL0040100066-01
Minimum Order Quantity 2 Piece
Price USD 15-30 /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 4S Lithium Battery Protection Board Compatible Interface SMBUS
Battery Type Li-ION Over Charge Detection Voltage(Cell) 3.750V±0.050V Adjustable
Over Discharge Detection Voltage(Cell) 2.500V±0.050V Adjustable Over Current Discharge 15.0A±0.5A Adjustable
Over Current Charge 13.0A±0.5A Adjustable Max.Discharge Current 10A
Discharging Temperature -20~70℃ Adjustable Charge Temperature 0~55℃ Adjustable
Dimension 53.5*35*2.5 Mm Sample Available
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4S lithium-ion battery protection board

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14.8V BMS PCB for mid-power devices

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Lithium-ion battery circuit protection board
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Product Description
4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices 


4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices 0



Calibrated to address the unique dynamics of 4-cell configurations, the board delivers targeted protection aligned with 4S voltage profiles and 10A discharge demands:
  • Overcharge Protection: Triggers at 3.75V (Li-ion)) per cell (total 15V for 4S packs), instantly cutting charging current to prevent cell swelling or thermal runaway—critical for 4S systems where voltage imbalance across four cells can accelerate degradation.
  • Undervoltage Protection: Shuts down discharge at 2.5V (Li-ion) per cell (total 10.0V for 4S packs), avoiding irreversible capacity loss from "weak cells" that compromise performance in 10A mid-power operation.
  • 10A Overcurrent & Short-Circuit Protection: Blocks currents exceeding 10A (max discharge) or 30A (peak surge), shielding the 4S pack and connected devices (e.g., cordless mini-drills, portable LED work lights) from burnout during startup or sustained use.
  • 4-Cell Active Balancing: Automatically equalizes voltage across all four cells during charging, eliminating uneven charge distribution—a common issue in 4S packs that reduces runtime and lifespan. This feature extends battery life by up to 30% vs. unbalanced systems and maintains consistent 10A discharge.

 

Ideal Application ScenariosThis board excels in 4S lithium devices requiring 10A peak discharge:
  • Mid-Power Tools: 4S cordless screwdrivers, small angle grinders, or handheld vacuums;
  • Portable Energy: 4S compact power stations (for charging laptops) or camping lanterns;
  • Recreational Gear: 4S RC cars, drones (mid-sized models), or electric skateboards;
  • Industrial Aids: 4S IoT sensor arrays (moderate-power transmitters) or portable medical devices (e.g., blood pressure monitors).
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.

4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices 1

Certifications
4S 14.8V Lithium-ion Battery PCB Circuit Protection Board for Mid-Power Devices 2
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