11.1V 2600mAh 18650 Li ion Battery Pack
Medical and outdoor imaging equipment manufacturers require compact power solutions that deliver stable voltage and exceptional reliability. These batteries must maintain precision performance even in challenging environments—such as low temperatures or high humidity—without risk of voltage drop.
Engineered to meet these rigorous demands, the 3S 11.1V 2600mAh 18650 Battery Pack integrates three 3.7V 18650 cells with a built-in PCB. This configuration ensures consistent output and reliable operation in a compact form factor.
Key features：
- Compact & Reliable Design: 3S 11.1V configuration in a compact 56×20×70mm form.
- Integrated BMS with Passive Balancing: It monitors and equalizes cell voltage, which enhances safety, prevents over-discharge, and significantly extends the overall cycle life of the pack
- Designed to Comply with Safety Standards:The battery is designed and built to meet the requirements of IEC62133 and UN38.3 safety standards
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 11.1V | 3.7V/Cell |
| 2 | Nominal Capacity | 2600mAh | @0.2C |
| 3 | Minimum Capacity | 2500mAh | |
| 4 | Shipment Voltage | / | |
| 5 | Initial Internal Impedance | ≤100mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 12.6V | 4.2V/Cell |
| 7 | Standard Charge Current | 520mA | |
| 8 | Max. Charge Current | 2600mA | |
| 9 | Standard Discharge Current | 520mA | |
| 10 | Max. Discharge Current | 5.2A | |
| 11 | Burst Discharge Current | 7.8A | ≤5ms |
| 12 | Discharge Cut-off Voltage | 7.5V | 2.5V/Cell |
| 13 | Cycle Life | ≥500cycles | Capacity retention ≥80% |
| 14 | Charge Temperature | 0°C~+45°C | Standard charge |
| 15 | Discharge Temperature | -20°C ~+60°C | Standard discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 months |
| -20°C~25°C | ≤1 year | ||
| 17 | Weight | About 135 | g |
| 18 | Special Request |
11.1V 2600mAh 18650 Battery Pack FAQs
Can the battery maintain stable performance in low-temperature or high-humidity environments?
Yes. The battery incorporates a low-temperature electrolyte and is equipped with moisture-resistant sealing, enabling reliable startup and continuous operation even in environments as cold as -20°C or under high-humidity conditions.
Are your batteries certified for international trade?
As our batteries are typically customized, we focus on ensuring their design complies with major international standards such as UN38.3, IEC62133, CE, RoHS, and UL1642. While not pre-certified, our products are built to meet these specifications and we can support the certification process for qualified orders to ensure seamless global export.
Can the battery pack be customized for specific voltage, capacity, or device size requirements?
Absolutely. We specialize in providing tailored power solutions. Customization options include voltage, capacity, physical dimensions, and connector types to ensure optimal compatibility and performance within your specific application.
Do you offer samples for testing, and what is the minimum order quantity (MOQ)?
Yes, we provide samples for prototype testing and validation. There is no minimum quantity for sample orders. For bulk production, the standard MOQ typically starts from 50–100 units, though this is flexible and can be adjusted based on your project specifics and customization needs.
Is it possible to produce samples or in small quantities?
Yes. We provide a flexible MOQ, which includes small-batch customization and sample orders for prototype testing.
Tailored Customization
Our design team can create custom battery designs for just about any device or machine.
Timely Delivery
Our efficient production and distribution process gets your product delivered in a timely manner.
Quality Guarantee
We stand by our products and guarantee you’ll be happy with your purchase.
