
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.
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.
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.
| 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 |
































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!