-40℃ Low Temperature 26650 3.6V 6800mAh Li-ion Battery

Item No.: TWE0613
Model: 26650-70HP
Nominal Voltage: 3.6V
Nominal Capacity: 6800mAh
Max Dimensions: 26.5*65.4mm
Certificate: CE, ROHS, UN38.3, IEC62133, etc.
Warranty: 1 year
Description Brand Introduction Review
Description

Product Description

Optimized Power Solutions for Industrial and Technical Users

Designed to meet the rigorous demands of engineering, this 18650 lithium ion battery delivers high energy density and durability essential for professional system integration. Our battery supplier ensures consistent output and long lifecycle benefits, making this high capacity 18650 battery suitable for applications requiring enhanced reliability and controlled performance parameters. This product serves industries including electronics manufacturing, electric mobility, and power tools, where stable energy sources directly impact operational efficiencies and return on investment.

Precision Engineering and Technical Specifications

This 18650 battery 3500mah model combines measurable specifications with strict quality standards to guarantee peak operational characteristics. Featuring a nominal capacity of 3500mAh and superior internal resistance control, it supports rapid charge-discharge cycles with minimal voltage drop. The design ensures compatibility across a wide range of electronic systems, emphasizing longevity and safety. As recognized lithium ion battery manufacturers, our product undergoes stringent testing to meet certification requirements and satisfy high-level engineering benchmarks in complex applications.

Applications Enhancing System Efficiency and Industrial Productivity

The versatility of this high capacity 18650 battery facilitates its deployment across critical sectors including medical device manufacturing, security hardware, and outdoor equipment production. Its superior energy density and consistent output allow companies to enhance system reliability while reducing maintenance downtime. Battery suppliers benefit from its modular compatibility, ensuring seamless integration into existing assemblies and sustainable supply chain management practices to satisfy global industry standards.

Product Specifications
Item Specifications Remark
Model No. Li26650-70HP
Nominal Voltage 3.6V
Nominal Capacity 6800mAh Standard discharge after standard charge
Dimensions 26.5*65.4mm max Diameter*Height
Cycle Life ≥500 times ≥ 80% of the initial capacity
Charge Method CC/CV with professional charger
Charge Cut-off Voltage 4.2V
Discharge Cut-off Voltage 2.5V
Standard Charge Current 0.2C
Standard Discharge Current 0.2C
Max Continuous Charge Current 1C 10℃≤Temp<45℃
Max Continuous Discharge Current 2C (14A)
Max Peak Discharge Current 3C (21A)
Recommended Operation Ambient Temperature Charge: 0~45℃, Discharge:-40~60℃
Low Temperature Discharge Capacity (-40℃) ≥60%
Storage Temperature -20℃~25℃ 12 months
-20℃~45℃ 3 months
-20℃~60 ℃ 1 month
Internal Resistance ≤25mΩ
Weight 105±2g
Product Advantages
-High safety
-Real capacity
-Low internal resistance
-Stable discharge voltage
-High consistency in capacity&voltage&resistance
-No fire, no explosion, no leakage
Applications
Bluetooth speaker, flashlight, solar light,intelligent door lock, gps tracker, parking device, medical device, POS machines, power tool, garden tool, sweeper, electric scooter, electric bike, outdoor power supply, etc
Bluetooth Speaker
Flashlight
Solar Light
Sweeper
Electric Scooter
Electric Bike
Certificates
Safety certificate: CE,CB, IEC62133, UL, PSE
Environmental certificate: ROHS, REACH
Quality management certificate: ISO9001, ISO14001, BSCI
Shipping certificate: UN38.3, MSDS, Air/Sea Transport Identification&Classification Report
CE certificate
RoHS certificate
IEC62133 certificate
UN38.3 certificate
ISO9001 certificate
Production Process
01 Materials Mixing
Fully automatic feeding system,High precision, fully enclosed
02 Coating
High precision constant temperature coating machine
03 Electrode Piece Rolling
Precision automatic roller machine
04 Electrode Piece Slitting
Automatic battery electrode piece continuous slitting machine
08 Injection
Fully automatic bell type liquid injection machine
07 Tab Welding&Beading
Automatic welding machine
06 Into Shell
05 Winding
Automatic winding machine
09 Automatic Laser Welding
10 Formation&Capacity Sorting
Needle bed type charging cabinet
11 Cycle Test
All cells will be 100% tested for 3 cycles.
12 OQC Test
100% full test on appreance, voltage, capacity, resistance, size, etc
Packing&Delivery
With 20 years experience in battery field, Topwell can arrange the battery ship by Sea / Air / Express.
We can provide you with all DG certification which allows you to ship these batteries,
such as UN38.3 /MSDS /DG. We can ship from Shenzhen,Shanghai,HK...
Packing
Delivery
Exhibitions


FAQ

What makes your -40°C Low Temperature 26650 lithium ion battery suitable for cold environments?
Our battery is engineered to operate reliably at temperatures down to -40°C, maintaining at least 60% capacity under extreme cold. With low internal resistance and stable discharge voltage, it ensures consistent performance even in harsh outdoor or industrial settings where typical batteries fail.

Do you offer customization options for battery specifications or packaging?
We are a leading lithium ion battery manufacturer with flexible production capabilities. While standard models like the 26650 6800mAh battery are available, we can discuss custom voltage, capacity, or packaging solutions to meet your specific industrial requirements. Contact us to explore tailored options.

How should I install and maintain the 26650 3.6V battery for reliable longevity?
For optimal cycle life, charge the battery using CC/CV methods, avoiding overcharge above 4.2V or deep discharge below 2.5V. Operate within recommended temperatures (charge 0~45°C, discharge -40~60°C). Proper storage at -20~25°C for 12 months helps preserve capacity and safety.

What delivery options and support do you provide as a battery supplier?
As a trusted battery supplier, we ship worldwide with international certifications like CE, ROHS, and UN38.3 to ensure compliance. Our team supports logistics and export documentation, helping you receive safe, certified batteries suitable for industrial use anywhere. Contact us for detailed shipping info.
Brand Introduction

Yichun Topwell Power Co., Ltd (Trademark:TWE) established in 2002, is a high-tech enterprise focusing on the R&D, production and sales of lithium polymer batteries, lithium ion batteries, lithium iron phosphate batteries, and lithium thionyl chloride batteries. Products are widely used in consumer electronics, Internet of Things, smart home, medical, vehicle, home and outdoor energy storage, and have obtained CE, RoHS, Reach, UN38.3, IEC62133, CB, UL, MSDS certifications, etc.

 

Topwell moves on by providing reliable, efficient and intelligent battery solutions to meet different energy needs. We have efficient engineering, production and quality management teams. From raw material procurement, to production, testing, sales and after-sales service, all steps have been controlled by a strict quality management system. Our factory has passed ISO9001, IS014001, BISI certification, SGS, Intertek audit. With the advantages in price, quality and service, we have established long-term and stable cooperative relationships with many well-known brands. Topwell always attached the great importance to the long term cooperation with customers. No matter the order is big or small, we do our best to support you the highest quality with favorable price. We believe that Topwell Power can be your best battery supplier!

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