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  • Shenzhen BAK Technology Co., Ltd.
    Kallista
    Nunca experimentei um serviço de cliente tão excelente com um fornecedor de fora do país.Esta empresa foi muito além para atender às necessidades dos seus clientes.O tempo de resposta com todas as minhas preocupações foi imediatamente 100% dentro de 1-24 horas e o tempo de envio foi EXCELENTE!
Pessoa de Contato : Dong
Número de telefone : +86 13828713564
Whatsapp : +8613828713564

OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function

  • OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function
  • OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function
  • OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function
  • OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function
  • OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function
Lugar de origem Dongguan China
Marca BAKTH / Neutral / OEM
Certificação IEC62133
Número do modelo BAKTH-004S006A-0084-01
Quantidade de ordem mínima 2 peças
Preço USD 8.75~13.5 /PC
Detalhes da embalagem Carton de papel industrial
Tempo de entrega 3-4 semanas
Termos de pagamento T/T.
Habilidade da fonte 10000pcs/mês

Contacte-me para amostras e cupons grátis.

Whatsapp:0086 18588475571

WeChat: 0086 18588475571

Skype: sales10@aixton.com

Se tiver alguma preocupação, fornecemos ajuda online 24 horas por dia.

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Detalhes do produto
Tipo Placa de protecção da bateria de lítio 4S Interface compatível SMBUS
Tipo de Bateria Li-íon Tensão de detecção de carga excessiva (célula) 4.250V ± 0,025V Ajustável
Tensão de detecção de descarga (célula) 2,400V ± 0,050V ajustável Sobre a descarga atual 13.5a ± 0,2A Ajustável
Sobre carga atual 5.5a ± 0,2A Ajustável Temperatura de descarga -25 ℃ ~ 65 ℃ ajustável
Temperatura de carga -5 ℃ ~ 55 ℃ Ajustável Dimensão 130*25*2,2 mm
Corrente de Max.Discharge 10a Amostra Disponível
Destacar

14.8V Li-ion BMS board

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BMS protection board with balance

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OEM 4S BMS PCB
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Descrição de produto


The 4S Lithium Battery Protection Board is a specialized safety and performance component exclusively engineered for 4-cell series (4S) lithium battery packs, covering Li-ion, Li-polymer, and LiFePO4 chemistries. As a critical “safety guardian” for 4S battery systems, it prevents irreversible damage, mitigates safety hazards (e.g., thermal runaway), and extends battery lifespan—making it indispensable for high-voltage consumer electronics, industrial equipment, and mid-power portable energy solutions.​
Tailored Protection for 4S Battery Packs​
Optimized for 4S configurations (nominal voltage: 14.8V for Li-ion, 12.8V for LiFePO4), this board delivers multi-dimensional safeguards calibrated to 4-cell characteristics:​
  • Overcharge Protection: Triggers when any single cell exceeds 4.25V (Li-ion) or 3.65V (LiFePO4), instantly cutting off charging current to avoid cell swelling, electrolyte leakage, or thermal risks—critical for 4S packs where voltage accumulation amplifies overcharge hazards.​
  • Undervoltage Protection: Shuts down discharge if any cell drops below 2.5V (Li-ion) or 2.0V (LiFePO4), preventing permanent capacity loss that plagues 4S packs when “weak cells” drag down the entire system.​
  • Overcurrent & Short-Circuit Protection: Blocks high currents (up to 35A, model-dependent) caused by short circuits or overloads (e.g., high-power tool startups), shielding both the 4S battery pack and connected devices from burnout.​
  • 4-Cell Balancing: Automatically equalizes voltage across all 4 cells during charging, eliminating uneven charge distribution (a common issue in multi-cell packs) and ensuring each cell operates at peak efficiency—avoiding “capacity bottlenecks” from undercharged cells.​
High Precision & Low Idle Power Drain​
Equipped with high-sensitivity voltage detection chips, the board monitors each of the 4 cells with ±2mV precision, ensuring timely and accurate protection responses even for subtle voltage fluctuations. Its ultra-low static current (<10μA) minimizes idle power consumption, preventing unnecessary capacity loss when the 4S pack is stored or not in use—critical for backup devices like emergency lights or portable storage units. Additionally, it features a auto-recovery function: once fault conditions (e.g., overcurrent) are resolved, it resumes normal operation without manual reset, enhancing user convenience.​
Broad Compatibility & Rugged Design​
This protection board supports 4S battery packs with capacities ranging from 1500mAh to 30000mAh, adapting to diverse power needs. It is fully compatible with standard 4S chargers and discharge devices, and works seamlessly with Li-ion, Li-polymer, and LiFePO4 chemistries—eliminating the need for multiple protection boards for different battery types. Constructed with a flame-retardant PCB board and industrial-grade components, it withstands extreme temperatures (-20°C to 85°C) and mechanical vibration, making it reliable for harsh environments like construction sites (electric tools) or outdoor adventures (camping power stations).​
Versatile High-Voltage Applications​
Ideal for 4S battery-powered devices requiring stable high voltage:​
  • Consumer electronics: 4S drone batteries (for longer flight time), high-capacity power banks (fast charging support), and professional LED work lights;​
  • Industrial equipment: 4S cordless power tools (e.g., heavy-duty drills, angle grinders), IoT sensor arrays (high-power transmission), and small medical devices (e.g., portable oxygen concentrators);​
  • Recreational & mobility gear: 4S electric scooters, RC cars/boats (high-torque performance), and camping portable fridges.
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.

OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function 0

Certifications
OEM Support 4S 14.8V Li-ion BMS Protection Board with Balance Function 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.

Etiquetas:

Bateria de lítio BMS

pcm bateria lifepo4

Conjunto da placa de circuito do PWB