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

 3.7V 9000mAh high-capacity Li-ion battery pack

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.

21700 high-capacity lithium battery pack with NTC

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

Long-life Li-ion battery for portable devices

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

Portable Electronics
Power banks, handheld gaming consoles and wireless speakers.
DIY Projects
Custom battery packs for robotics, drones and RC vehicles.
Industrial Equipment
Portable medical devices, LED lighting systems and IoT sensors.
Consumer Gadgets
Electric toothbrushes, shavers and smart home devices.

Rechargeable high-capacity battery for IoT equipment

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!

3.7V large-capacity lithium battery pack