Cylindrical - Model 21700-2S4P
Custom 7.4V 20000mAh 21700 2S4P Battery Pack
- Cell Type
- Cylindrical
- Nominal Voltage
- 7.4V
- Rated Capacity
- 20,000mAh
- Size
- 21700 cells - 2S4P
- Rated Energy
- 148Wh
- Limited Charging Voltage
- 8.4V
Application Guide
21700 2S4P Battery Pack Integration
This product is a 7.4V 20000mAh cylindrical lithium-ion battery pack using 21700 cells in a confirmed 2S4P configuration. The layout uses two series positions and four parallel cell paths to provide the confirmed voltage and capacity. Integration should be evaluated against the equipment load, available space and interface requirements.
Typical Applications
- E-mobility equipment with compatible electrical requirements
- Storage products designed for a 7.4V battery pack
- Power-tool projects with space for the confirmed 2S4P layout
Custom Battery Options
- 2S4P layout review based on available installation space
- Protection requirements to be confirmed for the project
- Connector and cable or wiring requirements
- Mechanical and electrical integration review
Manufacturer / OEM
Project Requirements for 21700 2S4P Integration
Provide the required voltage and capacity, continuous and peak load requirements, available installation space, connector requirement and cable or wiring requirement. These inputs allow the confirmed 7.4V 20000mAh 2S4P pack to be reviewed for the host product.
Related buying guides
Technical Data
Specifications
Model 21700-2S4P
Features
21700-2S4P
- 21700 cylindrical lithium-ion battery pack
- Confirmed 2S4P multi-cell configuration
- 7.4V nominal voltage and 20000mAh rated capacity
- 148Wh rated energy and 8.4V charging voltage
- Existing applications include e-mobility, storage and power-tool products
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 2S4P mean for this 21700 battery pack?+
The confirmed 2S4P configuration uses two series positions and four parallel 21700 cell paths, providing the stated 7.4V nominal voltage and 20000mAh capacity.
Can the 2S4P battery pack be adapted for an OEM project?+
The pack layout, protection, connector, wiring and installation requirements can be reviewed for the specific OEM product.
What information should I provide for a custom battery pack?+
Provide voltage, capacity, continuous and peak load requirements, installation space, connector and cable or wiring requirements.
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.
