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

Price Negotiable

Price: USD 15-30 /PC

MOQ: 2 Piece

Delivery Time: 3-4 weeks

Brand: BAKTH / Neutral / OEM

Product Description

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

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.

Certifications

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.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen BAK Technology Co., Ltd.

Location RM 2201, Longshenghengbo Center, Jianshe East Road and Bulong Road Intersection, Longhua District, Shenzhen, Guangdong, China

Contact Person Dong

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

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