21700 3.6V 6500mAh lithium-ion cell 10C low temperature rechargeable battery NMC

Product Introduction

The 21700 3.6V 6500mAh Low-Temperature Lithium-Ion Cell is a high-capacity rechargeable battery specially engineered for reliable performance in extreme cold environments. Utilizing advanced low-temperature electrolyte technology and optimized internal materials, this lithium-ion cell maintains stable discharge efficiency and power output even under freezing conditions.

With its large 6500mAh capacity, high energy density, and excellent low-temperature performance, the battery is ideal for outdoor electronic equipment, energy storage systems, intelligent monitoring devices, and other products operating in harsh climates.

Features

High capacity of 6500mAh for extended operating time

Excellent low-temperature discharge performance

Stable voltage output

High energy density with compact 21700 cylindrical design

Low internal resistance and high efficiency

Low self-discharge rate

Reliable safety performance and thermal stability

Suitable for continuous and high-load applications

Applications

Wildlife monitoring cameras

GPS tracking devices

Outdoor communication equipment

Cold-region solar energy systems

Portable power stations

Medical devices in low-temperature environments

Smart sensors and industrial monitoring systems

Electric transportation: Electric motorcycles, EV, electric scooters, electric bicycles

Technical Specifications

Shipment

At time of shipment, the cells’ state of charge shall be 20±10% of its rated capacity or less. The violent vibration, impaction or squeezing should be avoided in the transport process; neither is exposed in the sunlight nor rain. The cells shall be shipped by normal transportation such as by road, by ocean or by air.

Storing Condition

 (1) Storage temperature and humidity (within 3 months)

Cells should be stored in a stable environment characterized by low-humidity (less than 70% RH), free of corrosive gasses, and an ambient temperature between -20℃ and 40℃.

To prevent rust, avoid condition that can create condensation such as rapid fluctuations in the ambient.

(2) Long duration storage

When long duration storage cells should be stored in a stable environment characterized by low-humidity (less than 70%RH), free of corrosive gasses, and an ambient temperature between 0℃and 20℃.

Product Advantages

Compared with conventional lithium-ion batteries, the low-temperature 21700 cell delivers superior capacity retention and stable voltage output in freezing conditions. It significantly improves device reliability and operating time for outdoor and industrial applications exposed to low temperatures.

The 6500mAh high-capacity design allows longer runtime and reduced battery replacement frequency, making it an efficient and cost-effective energy solution for demanding applications.

OEM and ODM customization services are available, including battery pack assembly, PCM/BMS integration, connector customization, and tailored voltage and capacity solutions according to project requirements.