VTC18650-3S2P 11.1V 6900mAh Lithium-ion Battery Pack for Medical Monitoring, Industrial Sensors, IoT Devices
| Parameter | Specification |
|---|---|
| Model | VTC18650-3S2P |
| Battery Type | Cylindrical Lithium Ion Rechargeable Battery |
| Nominal Voltage | 11.1V |
| Nominal Capacity | 6900mAh (discharge with 1.34A to 7.5V) |
| Internal Impedance | ≤150mΩ |
| Max. Charge Voltage | 12.6V |
| Rapid Charge Current | 6.7A |
| Standard Discharge | CC 0.2C (1.345A), Cut-off 7.5V |
| Max. Discharge Current | 8A |
| Pack Dimensions | 39*64*68mm (Max) |
| Weight | Approx. 300g |
| Discharging Temperature | -20°C to 60°C |
VTC18650-3S2P 25.2V 6900mAh Lithium Ion Battery Pack for Medical Monitoring, Industrial Sensors, IoT Devices
The VTC18650-3S2P is a high-performance lithium-ion battery pack designed by VTCBATT to meet the demanding energy requirements of modern industrial and medical applications. With a nominal voltage of 11.1V and a typical capacity of 6900mAh (76.59Wh), this battery pack delivers long-lasting power in a compact 18650-3S2P configuration. It features an advanced Protection Circuit Module (PCM) incorporating the Seiko S-8254AAN protection IC and six dp4407 MOSFETs, ensuring multi-layer safety against overcharge, over-discharge, over-current, and short circuits. The integrated 10K NTC thermal sensor provides critical overheat protection, cutting off discharge if the surface temperature exceeds 70°C.
As a leading battery factory, VTCBATT provides comprehensive OEM/ODM services, including custom wire lengths, connector matching, and batch production to support your project from sample development to full-scale deployment.
Advanced PCM & Seiko Protection IC
Safety is paramount in our 11.1V battery pack design. Equipped with a professional-grade Protection Circuit Module (PCM) featuring the Seiko S-8254AAN protection IC and six dp4407 MOSFETs, it provides multi-layer defense against overcharge, over-discharge, and over-current. This ensures the long-term integrity of the 18650 cells and the safety of the host device.


Durable Industrial-Grade Construction
Built for reliability, the battery pack is wrapped in high-quality blue PVC and features UL1007 18AWG/24AWG wiring. It is engineered to withstand vibration, mechanical shock, and temperature cycling, supporting a wide discharge temperature range from -20°C to 60°C. This makes it a robust power solution for both stationary and portable industrial equipment.
High Capacity 6900mAh for Extended Runtime
The VTC18650-3S2P features a high typical capacity of 6900mAh (76.59Wh), providing significantly longer operational life for energy-hungry devices like medical monitors and industrial IoT nodes. This 3S2P configuration optimizes the energy density of the 18650 cells, ensuring your equipment stays powered for extended periods without frequent recharging or battery swaps.


Integrated 10K NTC Thermal Safety
To prevent thermal-related issues, this battery pack includes an integrated 10K NTC thermistor. The system is designed for active overheat protection, automatically stopping discharge if the surface temperature exceeds 70°C. This critical feature makes the VTC18650-3S2P ideal for sensitive medical environments and demanding industrial applications.
Full Certification & Extended Warranty
VTCBATT 25.2V 3000mAh Li-ion battery pack meet global certifications including CB, CE, UL, and UN38.3, and offer a 14-month warranty—two months longer than standard—to maximize customer confidence and profit.

VTCBATT 25.2V 3000mAh Li-ion battery pack passed all the major global certifications, such as CB, CE, EN61000,IEC62133,MSDS.UN38.3,ROHS,UL,BIS,KC Certification,which makes your product more competitive.

Compared to a normal 12-month warranty, VTCBATT 18650 batteries have 14-month warranty and two extra months for shipping and customs clearance ,which ensure the customer’s profit.
VTCBATT Production and Service
VTCBATT not only focuses on customized design and excellent service to meet the diverse demands of different customers, but also devotes itself to precise and standardized manufacturing in every process to ensure the highest-quality batteries. Meanwhile, VTCBATT will provide comprehensive support from pre-sales to after-sales, focusing on customers’ feedback to establish long-term and win-win cooperation. VTCBATT professional sales and technical engineer teams will be your best custom battery experts to assist with reliable and fast services at any time.
From the raw materials mixing to the cell test, VTCBATT adopts an automatic manufacturing process to maximize production efficiency and enhance the batteries quality, safety, and reliability. The entire manufacturing process is monitored and 100% tested before flowing to the next procedure to ensure zero defects before delivery.
Over the past 20 years, VTCBATT has built strong partnerships with customers in more than 50 countries worldwide. With reliable quality, responsive service, and tailored battery solutions, we have earned the trust of our clients—many of whom have maintained long-term cooperation and lasting friendships with us for over a decade. Together, we continue to grow and move forward toward a brighter future.
Application for VTC18650-3S2P 11.1V battery pack
Ideally suited for a wide range of B2B applications, the VTC18650-3S2P 11.1V battery pack excels in powering portable medical devices, industrial IoT sensors, and smart infrastructure. Its robust design supports a broad operating temperature range, with stable discharge performance from -20°C to 60°C, making it reliable for both indoor and outdoor deployments. Whether you are developing smart water meters, GPS tracking systems, or industrial backup power solutions, VTCBATT offers the flexibility to customize the battery pack’s physical and electrical specifications to your exact needs. We specialize in battery wholesale and factory-direct supply, offering competitive pricing for distributors and equipment manufacturers worldwide. Our team supports technical integration, providing sample testing and dedicated engineering support to ensure the perfect fit for your application.

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