3.6V 2600mAh 18650 Battery Pack with NTC Thermistor
High-performance 3.6V 2600mAh 18650 battery designed for precision electronics. This pack features an integrated Protection Circuit and NTC Thermistor for advanced temperature monitoring and safety. With a compact form factor and 9.36Wh energy output, it is the ideal power solution for handheld devices, medical equipment, and IoT gadgets.
Description
Model 18650 – Single-Cell Lithium Battery Pack with NTC
Voltage: 3.6V | Capacity: 2600mAh (9.36Wh) | Size: 70×19.5×18.5mm

Maximize the efficiency of your portable electronics with this reliable 18650 Lithium Battery Pack. Engineered for stability, this single-cell battery delivers 9.36Wh of consistent power in a slim, lightweight design.
Unlike standard batteries, this pack is equipped with a built-in NTC Thermistor, allowing your device to monitor battery temperature in real-time to prevent overheating. The integrated Protection Circuit Module (PCM) ensures longevity by guarding against over-charging, over-discharging and short circuits. Pre-fitted with UL3302 AWG28 wires and a 51021-5P connector, it is ready for seamless integration into your specific applications.
Technical Specifications
| Battery Type | Lithium Ion Battery |
| Part Number | 18650 |
| Voltage @ Capacity | 3.6V @ 2600mAh (9.36Wh) |
| Protection Circuit | Yes (PCM Included) |
| Thermistor (NTC) | Yes |
| Wires | UL3302 AWG28 40mm |
| Connector | 51021-5P |
| Dimensions (L x W x T) | 70mm x 19.5mm x 18.5mm |
| Charge Current | 0.2C to 0.5C (Standard Charge) |
| Discharge Current | 0.5C to 1.0C (Continuous) |
| Storage Temperature | -20°C to +60°C |
Core Advantages
- ✔
Intelligent Temperature Control: Built-in NTC thermistor monitors heat levels during charge/discharge cycles for safe operation. - ✔
Extended Runtime: High-capacity 2600mAh cells provide long-lasting power, outperforming lower capacity 18650 batteries. - ✔
Advanced Safety Protection: Integrated PCM safeguards against over-current, short circuits and voltage irregularities. - ✔
Premium Connectivity: Durable 51021-5P connector and flexible UL3302 wires ensure secure connection and easy installation. - ✔
Compact & Lightweight: Streamlined cylindrical design fits perfectly into tight spaces within handheld devices.
Perfect For Applications
Portable monitors, scanners where temperature monitoring is critical.
Digital cameras, portable audio players and GPS units.
Smart home sensors and wireless communication modules.
Barcode scanners and handheld data collectors.
Customization Services (OEM/ODM)
We understand that every device has unique power requirements. Our factory offers comprehensive battery customization services to tailor this 18650 battery pack to your exact specifications:
- Connector Customization: Replace standard 51021-5P with JST, Molex or custom connectors to match your motherboard.
- Wire Modifications: Adjust wire length, type (silicone, shielded) and gauge to fit your internal assembly.
- Capacity & Configuration: Customize series/parallel battery packs for different voltages and higher capacities.
- Branding: Custom labeling and packaging options available for bulk orders.











