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1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS

Categories	BMS PCB PCM
Brand Name:	BAKTH / Neutral / OEM
Model Number:	BAKTH-001S005A-0080-01
Certification:	IEC62133
Place of Origin:	Dongguan China
MOQ:	2 Piece
Price:	USD 8~13 /PC
Payment Terms:	T/T
Supply Ability:	10000PCS/Month
Delivery Time:	3-4 weeks
Packaging Details:	Industrial Paper Carton
Type:	1S lithium battery protection board
Compatible interface:	I2C
Battery Type:	Li-ION
Over charge detection voltage(Cell):	4.250V±0.025V
Over Discharge Detection Voltage(Cell):	2.500V±0.100V
Over Current Discharge:	5A-9A
Over Current Charge:	2.5A-5A
Max.Discharge Current:	5A
Dimension:	4230.51.2 mm
Sample:	Available

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Company Info.

Shenzhen BAK Technology Co., Ltd.

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Product Details
Company Profile

1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS

1S 3.7V Lithium Battery Protection Board with Overcharge/Overdischarge Protection

This 1S lithium battery protection board is a compact yet robust safety solution designed specifically for
single-cell lithium-ion and lithium-polymer batteries, serving as a
critical safeguard for small electronic devices. Engineered to
prevent common battery hazards, it integrates multiple protection
mechanisms to ensure reliable performance and extend battery
lifespan.

At its core, the board features comprehensive protection functions:
overcharge protection (cuts off charging when voltage exceeds 4.25V
to avoid cell swelling or leakage), over-discharge protection
(stops discharge below 2.5V to prevent irreversible capacity loss),
short-circuit protection (triggers in milliseconds to block
excessive current during accidental shorts), over-current
protection (limits discharge current to a safe threshold, typically
5A-10A depending on model), and optional over-temperature
protection (shuts down operation if temperature exceeds 70℃).

Crafted with high-quality components, it includes a precision
protection IC that monitors battery status in real-time and dual
MOSFETs (one for charge, one for discharge) to ensure rapid
response to anomalies—switching off circuits within microseconds
when thresholds are breached, then automatically restoring
operation once conditions normalize. The ultra-thin PCB design (as
thin as 0.8mm) and compact size (often under 20x10mm) make it ideal
for space-constrained devices like Bluetooth earbuds, smartwatches,
mini power banks, portable sensors, and small IoT gadgets.

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.

1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS

1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS

1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS

3.7V lithium battery protection board

1S BMS with overcharge protection

lithium battery PCB overdischarge protection

1S 3.7V 5A 18650 Li-ion Battery Charging Protection Board Module 2MOS BMS