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2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack

Categories	BMS PCB PCM
Brand Name:	BAKTH / Neutral / OEM
Model Number:	BAKTH-002S005A-0110-01
Certification:	IEC62133
Place of Origin:	Dongguan China
MOQ:	2 Piece
Price:	USD 8.65~13.5 /PC
Payment Terms:	T/T
Supply Ability:	10000PCS/Month
Delivery Time:	3-4 weeks
Packaging Details:	Industrial Paper Carton
Type:	2S lithium battery protection board
Compatible interface:	I2C
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:	5A±0.2A Adjustable
Over Current Charge:	5A±0.2A Adjustable
Discharging Temperature:	-30℃~65℃ Adjustable
Charge Temperature:	-0℃~45℃ Adjustable
Dimension:	64232 mm
Max.Discharge Current:	3A
Sample:	Available

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Company Info.

Shenzhen BAK Technology Co., Ltd.

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Company Profile

2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack

The 002S005A-0110-01 2S lithium battery protection board is a
high-performance safety solution engineered specifically for
2-series (2S) lithium-ion and lithium-polymer battery packs,
delivering reliable protection for mid-power electronic devices. As
a dedicated 2S module, it’s optimized for battery packs with a
nominal voltage of 7.4V (3.7V per cell), making it a critical
component for maintaining battery integrity and device safety.

At its core, this protection board integrates a comprehensive suite
of safety mechanisms to guard against common battery hazards. It
features precise overcharge protection (triggering at 4.25V when
cells exceed safe voltage to prevent swelling or thermal runaway),
over-discharge protection (activating at 2.5V to avoid irreversible
cell damage from deep discharge), and robust over-current
protection (supporting a continuous current of 5A, with a 20A
short-circuit cutoff to shield against excessive load or accidental
shorts). Additionally, built-in over-temperature protection (65℃
threshold) ensures shutdown during extreme heat, while reverse
polarity protection prevents damage from incorrect wiring.

Crafted with premium components, the 002S005A-0110-01 utilizes a
high-precision protection IC for real-time voltage/current
monitoring, paired with dual MOSFETs (charge and discharge control)
for ultra-fast response—circuit disconnection occurs within
microseconds of detecting anomalies, with automatic recovery once
conditions normalize. Its compact PCB design and lightweight
construction enable seamless integration into space-constrained
applications, from portable power tools and small electric scooters
to medical devices and DIY battery packs.

Whether for industrial equipment or consumer electronics, the
002S005A-0110-01 2S protection board balances durability,
precision, and ease of use, providing peace of mind for both mass
production and custom projects requiring stable, safe 7.4V battery
operation.

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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Standard battery packs
Our battery pack and PCM/BMS solutions have been widely adopted across multiple sectors, such as consumer electronics, medical dev ices, ESS and industrial equipment etc... Our sales philosophy is to "give priority to recommending standard products to customer" to reduce R&D costs for them.

Customized batteries
Customized product development is another area where we excel, our engineering teams conduct end-to-end optimization from the design phase onwards, embedding reliability and cost-efficiency into every product while ensuring safety compliance.

2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack

2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack

2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack

2S Li-ion BMS protection board

7.4V lithium battery PCB

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2S 7.4V 8.4V Li-ion BMS Lithium Battery Protection Board PCB for DIY 18650 Battery Pack