Cylindrical - Model 18650-2S
Custom 7.4V 3500mAh 18650 2S1P Battery Pack
- Cell Type
- Cylindrical
- Nominal Voltage
- 7.4V
- Rated Capacity
- 3,500mAh
- Size
- 18650 cells - 2S1P
- Rated Energy
- 25.9Wh
- Limited Charging Voltage
- 8.4V
Application Guide
18650 2S1P Battery Pack Integration
This product is a 7.4V 3500mAh cylindrical lithium-ion battery pack built with 18650 cells in a confirmed 2S1P configuration. Two cells are connected in series to establish the pack voltage, with one cell path in parallel. The pack interface and layout should be reviewed against the host product's electrical and installation requirements.
Typical Applications
- Power-tool projects with compatible electrical requirements
- PDA equipment designed for a 7.4V pack
- Consumer products with space for the confirmed 2S1P layout
Custom Battery Options
- Pack layout based on available installation space
- Protection requirements to be confirmed for the application
- Connector and wiring requirements to be confirmed
- OEM integration review for the host product
Manufacturer / OEM
Project Inputs for 2S1P Integration
Provide the required voltage and capacity, continuous and peak load requirements, available installation space, connector requirement and cable or wiring requirement. These inputs support an integration review without changing the confirmed 7.4V 3500mAh 2S1P configuration.
Related buying guides
Technical Data
Specifications
Model 18650-2S
Features
18650-2S
- 18650 cylindrical lithium-ion battery pack
- Confirmed 2S1P multi-cell configuration
- 7.4V nominal voltage and 3500mAh rated capacity
- 25.9Wh rated energy and 8.4V charging voltage
- Existing applications include power-tool, PDA and consumer products
Applications
OEM / ODM
Customization options
Need a different capacity, size, connector or battery configuration? Send us your requirements and our engineers will evaluate a suitable solution for your project.
Request a custom quote →- Capacity customization
- Connector customization
- PCM / BMS customization
- Cable length customization
- Logo printing
- Battery pack assembly
Frequently Asked Questions
What does 2S1P mean for this 18650 battery pack?+
The confirmed 2S1P configuration uses two 18650 cells connected in series with one parallel cell path, providing the stated 7.4V nominal voltage and 3500mAh capacity.
Can this battery pack be adapted for an OEM project?+
The pack layout, protection, connector, wiring and installation requirements can be reviewed for the specific OEM project.
What information should I provide for a custom battery pack?+
Provide the required voltage and capacity, continuous and peak load, available installation space, connector requirement and cable or wiring requirement.
How do I request a product quote and sample?+
Fill in the form on the Contact page or email us at info@blusenergy.com. Please include voltage, capacity, dimensions, usage scenario, target certifications and required quantity. Our engineers will respond within 24 hours.
What is the product minimum order quantity (MOQ)?+
MOQ depends on the battery model and customization requirements. Sample and prototype quantities can be discussed based on your project needs. Send us your specifications and estimated quantity, and we’ll evaluate the most suitable option for your project.
Which international safety certifications do your battery products carry?+
IEC62133, UN38.3, MSDS, CE, RoHS, UL2054, UL9540, IEC62619, KC, BIS, PSE, CB, ISO9001, ISO14001. We can also arrange additional certifications on request.
How long do sampling and bulk delivery each take?+
Standard products: 7–15 days. Customized packs: 15–25 days for samples, 25–45 days for mass production (depending on certification and tooling).
What is the official warranty period for all battery products?+
12 months for consumer cells, 24 months for industrial packs, up to 10 years for energy storage systems (subject to project scope).
Do you provide installation guidance and technical support for energy storage systems?+
Yes. For BESS and household storage we provide installation manuals, remote training, on-site commissioning (paid) and 24/7 ticket support.
