26650 li ion battery​
26650 batteries
26650 rechargeable battery

26650 5000mAh 5C 3.7V Lithium Ion Rechargeable Battery​​

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Summary of 26650 5000mAh 5C 3.7V Li Ion Battery​

The 26650 5000mAh 5C 3.7V Lithium Ion Rechargeable Battery is engineered for demanding applications that require high energy density, long runtime, and stable high-current output. With an energy density up to 194.74Wh/kg, a true 5000mAh capacity, and 5C continuous discharge capability, this cell delivers exceptional performance, efficiency, and cycle life for professional-grade energy solutions. Designed with low internal resistance and advanced thermal control, it ensures lower heat generation, higher efficiency, and a long service life exceeding 500 deep cycles, making it an ideal choice for industrial, mobility, and energy storage applications.

26650 Rechargeable Battery 5000mAh​ Specification

Model: Lithium Ion 26650

Rated capacity: 5000mAh

Energy: 18.5Wh

Energy Density: 194.74Wh/kg

Minimum Capacity: 4950mAh

Rated voltage: 3.7V

Discharge Cut-off Voltage: 2.75V

Charge Cut-off Voltage: 4.2V

Cycle Life: More than 500 cycles

Dimensions: Φ26*65mm

Weight: 95g

Internal Resistance: Less than 20mΩ

Standard Discharge Current: 0.2C (1000mA)

Standard Charge Current: 0.2C (1000mA)

Max Continuous Discharge Rate: 5C (25A)

Max Continuous Charge Current: 1C (5A)

Charging Temperature: 0 to 45℃;

Discharge Temperature: -20 to 65℃

Storage Temperature:

  • -20℃~25℃: 12 months
  • -20℃~45℃: 3 months
  • -20℃~60 ℃: 1 month

Key Features – 3.7 V 26650 Lithium Ion Battery​

🚀 Ultra-High Energy Density — Up to 194.74Wh/kg

  • Maximizes power output while minimizing weight

  • Ideal for compact designs where energy-to-weight ratio is critical

  • Supports lightweight and portable power solutions

🔋 True 5000mAh High Capacity for Extended Runtime

  • Delivers longer operating time per charge

  • Reduces charging frequency and system downtime

  • Consistent capacity output across discharge cycles

🔥 Low Internal Resistance for Higher Efficiency

  • Minimizes energy loss during charge and discharge

  • Generates less heat under high load

  • Improves system safety and performance stability

⚙️ 5C Continuous Discharge for High-Current Demands

  • Supports sustained high-power output

  • Suitable for devices requiring instant current delivery

  • Maintains voltage stability under heavy loads

🔁 Long Cycle Life — 500+ Deep Cycles

  • Over 500 full charge-discharge cycles

  • Remaining capacity ≥4000mAh after 500 cycles

  • Lower total cost of ownership and longer product lifespan

❓ Frequently Asked Questions (FAQ)

Q1: What are the disadvantages of 26650 batteries?

A: Compared with smaller cells like the 18650, 26650 batteries are larger and heavier, which can restrict their use in compact designs. At the same time, this increased size allows 26650 batteries to offer higher capacity and a longer overall service life.

Q2: What is the lifespan of a 26650 battery?

A: Cestpower 26650 lithium-ion battery lasts 500~800 full charge cycles, depending on usage, discharge rate, and operating temperature. 26650 cells can retain 70~80% of their original capacity after these cycles when properly maintained.

Q3: Do lithium batteries go bad from sitting?

A: It’s best to store lithium batteries neither empty nor full, but at about 40–60% charge. Storing them fully charged or completely depleted accelerates aging and can permanently reduce capacity.

Q5: What are 26650 batteries used for​?

A: 26650 batteries are commonly used in high-drain and high-capacity applications such as electric bikes, power tools, flashlights, and energy storage systems. Their larger size allows them to deliver longer runtime and higher current output than smaller lithium-ion cells.

Cylindrical Rechargeable Lithium Ion Battery​ Cell List

Model Name

Battery Type

Nominal Voltage

Nominal Capacity

      Diameter        (±0.5mm)

Length (±0.5mm)

 Weight     (±5%)

Max Charge Current

Max Discharge Current

Max Internal         Resistance
26500 Li-ion 3.7V 2000mAh 26mm 50mm 63g 2A 30A 20mΩ
26500 Li-ion 3.7V 3200mAh 26mm 50mm 65g 3.2A 9.6A 55mΩ
26650 Li-ion 3.7V 3400mAh 26mm 65mm 84g 3.4A 51A 15mΩ
26650 Li-ion 3.7V 5000mAh 26mm 65mm 93g 5A 15A 55mΩ
26650 Li-ion 3.7V 5000mAh 26mm 65mm 95g 5A 25A 20mΩ
32550 Li-ion 3.7V 5000mAh 32mm 55mm 115g 5A 15A 25mΩ
32600 Li-ion 3.7V 5500mAh 32mm 60mm 127g 5.5A 16.5A 18mΩ
32650 Li-ion 3.7V 6500mAh 32mm 65mm 132g 6.5A 19.5A 18mΩ
34600 Li-ion 3.7V 7000mAh 34mm 60mm 142g 3.5A 14A 35mΩ

 

 

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