Custom 21700 18650 Battery Pack 1S2P 1S3P 1S4P 1S5P 1S6P 2S1P 2S2P 3S1P 3S2P 3S3P 4S1P 4S2P 4S3P 4S4P Battery 3.7V 7.4V 11.1V
The 21700 3S3P lithium-ion battery pack is a customized rechargeable battery solution specifically designed for applications that require compact size, high energy density, and reliable power performance.
This battery module features advanced 21700 lithium-ion cylindrical cells arranged in a 3S3P configuration, providing a stable voltage platform and optimized capacity output. Compared to traditional 18650 battery packs, the larger 21700 cell format offers higher energy density and better thermal management performance.
The integrated intelligent battery management system (BMS) provides comprehensive protection, including overcharge protection, overdischarge protection, overcurrent protection, short circuit protection, and temperature monitoring, ensuring safe and efficient operation of the battery.
The battery pack can be customized according to customer requirements, including voltage, capacity, discharge current, connectors, communication protocols, shell design, and brand identification.
Designed specifically for professional OEM customers, manufacturers, and system integrators, the 21700 3S3P battery pack can provide reliable power solutions for portable power stations, electric mobility products, robots, industrial equipment, and custom electronic devices.
21700 3S3P Lithium-ion Battery Pack Specifications
| Item | Specification |
|---|---|
| Product Name | 21700 3S3P Lithium-ion Battery Pack |
| Battery Type | Rechargeable Lithium-ion Battery |
| Cell Type | 21700 Cylindrical Battery Cell |
| Configuration | 3S3P (9 Cells) |
| Nominal Voltage | 10.8V / 11.1V |
| Full Charge Voltage | 12.6V |
| Capacity | Customized |
| Energy Capacity | Customized |
| Battery Chemistry | NMC Lithium-ion |
| Cell Capacity Options | 4000mAh / 5000mAh / Customized |
| Maximum Charging Voltage | 12.6V |
| Charging Current | Customized |
| Continuous Discharge Current | Customized |
| Peak Discharge Current | Customized |
| BMS Protection | Smart Battery Management System |
| Communication | UART / CAN / RS485 Optional |
| Cycle Life | 500-1000 Cycles |
| Operating Temperature (Charge) | 0℃ ~ 45℃ |
| Operating Temperature (Discharge) | -20℃ ~ 60℃ |
| Storage Temperature | -20℃ ~ 45℃ |
| Connector | Customized |
| Housing Material | PVC / ABS / Custom |
| Installation | Customized |
| Certification | UN38.3 / MSDS / RoHS / CE |
| OEM/ODM | Available |
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Why Choose 21700 3S3P Lithium-ion Battery Pack?
1. Higher Energy Density & Longer Runtime
Using advanced 21700 lithium-ion cells, this battery pack provides higher capacity in a compact structure.
Customer Benefits:
✓ Longer equipment operating time
✓ Reduced battery size and weight
✓ Improved product competitiveness
2. Stable and Reliable Power Output
The optimized 3S3P configuration provides consistent voltage and current output for different applications.
Customer Benefits:
✓ Stable equipment operation
✓ Better performance under load
✓ Reduced power interruptions
3. Intelligent BMS Protection System
The built-in BMS continuously monitors battery status and protects against abnormal conditions.
Protection Functions:
✓ Overcharge protection
✓ Over-discharge protection
✓ Over-current protection
✓ Short circuit protection
✓ Temperature protection
✓ Cell balancing
Customer Benefits:
✓ Safer operation
✓ Longer battery lifespan
✓ Improved product reliability
4. Flexible OEM/ODM Customization
We provide complete customization solutions based on different application requirements.
Available Customizations:
✓ Battery capacity
✓ Voltage configuration
✓ Discharge rate
✓ Connector type
✓ Communication protocol
✓ Battery enclosure
✓ Logo & packaging
5. Compact Design for Space-Limited Applications
The 21700 cylindrical structure provides excellent balance between power output and installation space.
Suitable for:
✓ Portable devices
✓ Smart equipment
✓ Robotics
✓ Electric mobility products
6. Professional Battery Manufacturing Support
From cell selection to finished battery pack assembly, we provide complete technical support.
Customer Benefits:
✓ Faster product development
✓ Stable supply capability
✓ Reduced project risk
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What products does YiFang offer?
YiFang specializes in batteries, chargers, battery packs, and power solutions, including Li-ion, LiMn (IMR), Ni-MH, and LiFePO₄ batteries.
Does YiFang provide OEM/ODM services?
Yes, we offer flexible OEM and ODM customization, including product design, specifications, and packaging to meet your exact requirements.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What is YiFang’s production capacity?
YiFang operates its own factory with automated production lines, producing up to 100,000 units daily, ensuring consistent quality and timely delivery.
How can I contact YiFang for orders or inquiries?
You can contact us via our website inquiry form, email, or phone. Our team is ready to provide professional guidance and customized solutions.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What warranty and after-sales support does YiFang offer?
We provide 6–12 months warranty, responsive customer support, and global insurance coverage for long-term reliability and customer peace of mind.
