High Capacity 3.7V 9000mAh 21700 Lithium Battery Pack with NTC & ZHR-3P Connector
Experience superior energy density with this 3.7V 9000mAh 21700 battery pack, delivering a massive 33.3Wh of power. Engineered for safety and performance, it features an integrated protection circuit and NTC thermistor for real-time temperature monitoring. With a compact form factor (72.0mm x 43.5mm x 21.5mm) and ZHR-3P connector, this rechargeable battery is ideal for high-drain portable devices and industrial applications.
Description
Model 21700 – High Capacity Lithium Battery Pack
Voltage: 3.7V | Capacity: 9000mAh (33.3Wh) | Size: 72.0×43.5×21.5mm

Upgrade your device’s runtime with this premium 21700 Lithium Battery Pack. Built using advanced 21700 cells, this battery offers exceptional energy density and long cycle life. The built-in protection circuit safeguards against overcharge, over-discharge and short circuits, while the NTC thermistor ensures thermal stability during operation.
Equipped with durable AWG24 wires and a ZHR-3P connector, this battery provides reliable connectivity for a wide range of applications. Its slim, rectangular design fits seamlessly into tight spaces, making it perfect for portable electronics, DIY projects and industrial equipment requiring consistent, high-capacity power.
Technical Specifications
| Battery Type | Lithium Ion Battery |
| Part Number | 21700 |
| Voltage @ Capacity | 3.7V @ 9000mAh (33.3Wh) |
| Protection Circuit | Yes (PCM Included) |
| Thermistor (NTC) | Yes |
| Wires | UL1571 AWG24 50mm |
| Connector | ZHR-3P |
| Dimensions (L x W x T) | 72.0mm x 43.5mm x 21.5mm |
| 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
- ✔
High Capacity: 9000mAh capacity delivers extended runtime for power-hungry devices. - ✔
Enhanced Safety: Integrated PCM and NTC thermistor prevent overheating and ensure safe operation. - ✔
Universal Compatibility: Standard ZHR-3P connector and AWG24 wires simplify integration into existing systems. - ✔
Compact Design: Slim profile fits into tight spaces without compromising power output. - ✔
Long Cycle Life: High-quality 21700 cells ensure durability and consistent performance over time.
Perfect For Applications
Power banks, handheld gaming consoles and wireless speakers.
Custom battery packs for robotics, drones and RC vehicles.
Portable medical devices, LED lighting systems and IoT sensors.
Electric toothbrushes, shavers and smart home devices.
Customization Services
We offer tailored solutions to meet your specific power requirements:
- Capacity & Voltage: Adjust mAh and voltage to match your device’s exact needs.
- Connector Types: Customize connector models (JST, XT series, etc.) for seamless integration.
- Wire Length & Gauge: Modify wire length and AWG size for optimal fit and performance.
- Branding & Packaging: Add your logo and custom packaging for retail or OEM orders.
This 3.7V 9000mAh 21700 battery pack is engineered to deliver reliable, high-capacity power for a wide range of applications. Contact us today to discuss your customization needs!











