The INR18650N26A20 is a 3.7V 2600mAh high-discharge 18650 lithium-ion battery designed for appliances and equipment requiring both energy density and stable power output.
It supports up to 20A continuous discharge with low internal resistance, ensuring reliable performance under medium to high load conditions.
The cell delivers up to 300 cycles with controlled capacity retention across different discharge rates, making it suitable for OEM battery packs.
Its balanced design between capacity, safety, and thermal stability makes it a practical alternative for applications such as vacuum cleaners, garden tools, and portable devices.
20A continuous discharge supports motor-driven and load-fluctuating applications
Low internal resistance (≤18mΩ) reduces heat generation during high-current operation
Balanced energy density and discharge capability in standard 18650 format
Verified cycle performance under multiple discharge current conditions
Stable operation across a wide charging and discharging temperature range
Available in flat top or button top configuration for pack design flexibility
The INR18650N26A20 18650 lithium-ion battery is engineered for applications that require a balance between usable capacity and high-rate discharge capability.
With a nominal voltage of 3.7V and a capacity of 2600mAh, this cell is optimized for appliances and tools where continuous current demand and thermal stability are critical.
This model is designed for B2B customers, OEMs, and ODMs who require consistent electrical behavior, predictable cycle life, and compatibility with standard 18650 battery pack architectures.
When integrated with a suitable battery management system, the INR18650N26A20 performs reliably in both single-cell and multi-cell configurations.
| Parameter | Value |
|---|---|
| Model | INR18650N26A20 |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 2600mAh |
| Charging Voltage | 4.20V ± 0.05V |
| Discharge Cut-off Voltage | 2.75V |
| Max Charging Current | 2.6A |
| Max Continuous Discharge Current | 20A |
| Weight | ≤45.0g |
| Dimensions | Diameter ≤18.50mm, Height ≤65.30mm |
| Internal Resistance | ≤18mΩ |
| Energy Density | Volume: 548Wh/L, Weight: 214Wh/kg |
| Terminal Type | Standard 18650 flat top or button top (customizable) |
| Test Condition | Cycles | Capacity Retention |
|---|---|---|
| 2.6A Charge / 2.6A Discharge | 300 | ≥80% |
| 2.6A Charge / 10A Discharge | 300 | ≥70% |
| 2.6A Charge / 13A Discharge | 250 | ≥60% |
| Condition | Temperature Range |
|---|---|
| Charging | 0°C to 50°C |
| Discharging | -20°C to 75°C |
| Storage | -20°C to 45°C (recommended for long-term storage) |
All performance data is measured under controlled laboratory conditions.
Garden tools such as trimmers and blowers
Vacuum cleaners and motor-driven cleaning equipment
Small household appliances including blenders and mixers
Power banks and portable electronic devices
OEM battery packs for consumer and light industrial products
Use only compatible chargers and devices designed for lithium-ion cells
Avoid short-circuiting, overcharging, or over-discharging
Do not expose the battery to fire, water, or excessive heat
Ensure proper thermal management in battery pack design
Recommended storage state of charge (SOC): approximately 50%
Ideal storage temperature: 20±5°C
Avoid storage in high humidity or extreme temperature environments
Recharge every 6 months if stored for extended periods
Warranty period: 12 months from the date of purchase
Warranty covers manufacturing defects under normal operating conditions
Damage caused by misuse, improper charging, or unauthorized modification is excluded
| Aspect | INR18650N26A20 | Standard General-Purpose 18650 |
|---|---|---|
| Continuous Discharge | 20A | Typically 5–10A |
| Internal Resistance | ≤18mΩ | Higher and less consistent |
| Cycle Life Transparency | Verified under multiple loads | Often unspecified |
| Application Focus | Appliances and motor-driven tools | General electronics |
| Thermal Stability | Designed for higher load operation | Limited at high current |
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