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18650 3S1P 11.1V 2500mAh Lithium-Ion Battery Pack
$16.00
Compact 18650 lithium-ion battery pack in 3S1P configuration, delivering 11.1V nominal voltage and 2500mAh capacity. Built with Grade A 18650 cells and a protected BMS for safe, stable power delivery. Ideal for portable electronics, power tools, medical devices, and custom OEM/ODM battery solutions.
Full Description
The 18650 3S1P 11.1V 2500mAh battery pack offers a compact, lightweight power solution for applications requiring standard 11.1V lithium-ion output. Using three cells in series (3S1P — single parallel group), this configuration keeps the pack small and light while delivering consistent voltage across the discharge curve.
Each pack is assembled from capacity- and internal-resistance-matched Grade A 18650 cells for reliable, consistent performance cycle after cycle. An integrated BMS (Battery Management System) provides overcharge, over-discharge, overcurrent, and short-circuit protection.
HNF Battery supports full customization — including connector type, wire gauge and length, PCB/BMS specification, and enclosure/heat-shrink finish — to match your product’s exact requirements. OEM/ODM services are available for qualified B2B buyers.
Key Features
- 3S1P configuration: 11.1V nominal voltage
- Capacity: 2500mAh (2.5Ah)
- Grade A matched 18650 cells for consistent performance
- Built-in BMS: overcharge/over-discharge/overcurrent/short-circuit protection
- Compact, lightweight single-parallel-group design
- Customizable connectors, leads, and PCB per customer spec
- Certified: CE, RoHS, IEC 62133-2, UN38.3, CCC, MSDS available
- OEM/ODM support for bulk and custom orders
Applications
Portable electronics, handheld power tools, medical devices, instrumentation, robotics, and other equipment requiring a compact 11.1V lithium power source.
Specifications Table
| Parameter | Value |
|---|---|
| Cell Type | 18650 Li-ion |
| Configuration | 3S1P |
| Nominal Voltage | 11.1V |
| Nominal Capacity | 2500mAh (2.5Ah) |
| Energy | ≈27.75Wh |
| Charge Cut-off Voltage | 12.6V |
| Discharge Cut-off Voltage | 9.0V |
| Max Continuous Discharge Current | |
| Internal Resistance | |
| Cycle Life | ≥500 cycles @ 0.5C (to 80% capacity) |
| Operating Temp (Discharge) | -20°C ~ 60°C |
| Operating Temp (Charge) | 0°C ~ 45°C |
| BMS Protection | Overcharge / Over-discharge / Overcurrent / Short-circuit |
| Certifications | CE, RoHS, IEC 62133-2, UN38.3, CCC, MSDS |
| Custom Options | Connector, wire length/gauge, PCB spec, enclosure |
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