China Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function for sale

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Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function

Name: Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function
Brand: Shenzhen BAK Technology Co., Ltd.

Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function The ITL0040150008-01 is a high-performance, mid-power protection board exclusively engineered for 4-cell series (4S) lithium battery packs—compatible with Li-ion, Li-polymer, and LiFePO4 chemistries—with a maximum discharge current of 15A. Tailored for medium-voltage (nominal 14.8V for Li-ion, 12.8V for LiFePO4) and moderate-to-high load applications, it balances robust safety controls with responsive

Discharging Temperature -26~65℃ Adjustable

Over Current Discharge 20.0A±1.0A Adjustable

Over Discharge Detection Voltage(Cell) 2.500V±0.050V Adjustable

Place of Origin Dongguan China

Over Current Charge 10.0A±0.5A Adjustable

Compatible interface SMBUS

gameboy advance sp battery bosch battery 14.4v iphone 4s battery replacement

Product Description

Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function

The ITL0040150008-01 is a high-performance, mid-power protection board exclusively engineered for 4-cell series (4S) lithium battery packs—compatible with Li-ion, Li-polymer, and LiFePO4 chemistries—with a maximum discharge current of 15A. Tailored for medium-voltage (nominal 14.8V for Li-ion, 12.8V for LiFePO4) and moderate-to-high load applications, it balances robust safety controls with responsive 15A current handling, making it ideal for mid-power electric tools, recreational gear, and compact energy storage units.

4S-Specific Protection & 15A High-Current Safeguards
Calibrated to address the unique dynamics of 4-cell configurations, the board delivers targeted protection aligned with 4S voltage profiles and 15A discharge demands: 
Overcharge Protection: Triggers at 4.25V (Li-ion) per cell (total 17.0V for 4S packs), instantly cutting charging current to prevent cell swelling, electrolyte breakdown, or thermal runaway—critical for 4S systems where voltage imbalance across four cells amplifies performance degradation risks.
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 stability during 15A high-load operation (e.g., electric tool startup).
15A Overcurrent & Short-Circuit Protection: Blocks currents exceeding 15A (max discharge) or 45A (peak surge), shielding the 4S pack and connected devices (e.g., cordless angle grinders, mid-sized drones) from burnout during sustained use or accidental short circuits.
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 35% compared to unbalanced systems and maintains consistent 15A discharge performance.
 
Ideal Application Scenarios​
This board is tailored for 4S lithium devices requiring 15A peak discharge:​

Mid-Power Tools: 4S cordless drills, small angle grinders, or handheld vacuums (14.8V Li-ion systems);​


Recreational Gear: 4S mid-sized drones (for extended flight time), RC cars/boats (high-torque performance), or electric skateboards;​


Portable Energy: 4S compact power stations (for charging laptops or small appliances) or camping LED work lights;​

Industrial Aids: 4S IoT sensor arrays (moderate-power long-range transmitters) or portable medical devices (e.g., small oxygen concentrators).

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.

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Advanced Rectangle 4S 14.8V 15A Lithium Battery BMS with Balancing Function

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