Product information:

Model 18650 lithium battery
2. Nominal capacity: 5000mAh
3. Rated voltage: 3.7V
4. Charging voltage: 4.20 ± 0.05V
5. Discharge cut-off voltage: 3.0V
6. Maximum charging voltage: 4.25V
7. Weight: 36g
8. Permissible ambient temperature: Charging: 0 ° C~+45 ° C, discharging: -20~+60
9. Surface temperature limit of battery cells: charging: 60 ° C, discharging: 80 ° C
10. Pointed style size: 18mm (D) × sixty-six point five
Flat head style size: 18mm (D) × sixty-five

Model 26650 lithium battery
2. Nominal capacity: 5000mAh
3. Rated voltage: 3.7V
4. Charging voltage: 4.20 ± 0.05V
5. Discharge cut-off voltage: 3.0V
6. Maximum charging voltage: 4.25V
7. Weight: 80g
8. Permissible ambient temperature: Charging: 0 ° C~+45 ° C, discharging: -20~+60
9. Surface temperature limit of battery cells: charging: 60 ° C, discharging: 80 ° C

Packaging list:
Battery x 1pc

18650 Rechargeable Battery 3.7V – High Capacity Lithium-Ion Power Cell

Perfect for DIY Users, Electronics Builders, Torch Users, and Device Repair in New Zealand Requiring Reliable Rechargeable Power

The 18650 rechargeable battery 3.7V NZ is designed for users who need a high-performance lithium-ion cell for powering electronics, DIY projects, flashlights, battery packs, and portable devices. It is widely used in New Zealand for applications ranging from household gadgets to advanced electronics, solar storage systems, and hobby electronics builds.

Known for its high energy density, rechargeability, and long cycle life, the 18650 battery is one of the most commonly used lithium-ion cells in modern portable power systems. It delivers stable voltage output and reliable performance across a wide range of devices.

H1: 18650 Rechargeable Battery 3.7V – High Capacity Lithium-Ion Power Cell

Description – 18650 Rechargeable Battery 3.7V

The 18650 rechargeable battery is a cylindrical lithium-ion cell with a nominal voltage of 3.7V, widely used in portable electronics and energy storage systems. The name “18650” refers to its physical size: approximately 18mm in diameter and 65mm in length.

This battery is engineered using lithium-ion chemistry, which provides a balance of high energy density, lightweight structure, and long cycle life. It is capable of being recharged hundreds to thousands of times depending on quality and usage conditions, making it a cost-effective and sustainable power solution.

The 3.7V output is the standard nominal voltage for lithium-ion cells, with a fully charged voltage typically reaching around 4.2V. As the battery discharges, voltage gradually decreases, but remains stable enough to power a wide range of electronic devices efficiently.

18650 batteries are commonly used in series or parallel configurations to create larger battery packs with higher voltage or capacity. This makes them ideal for custom power banks, electric tools, e-bikes, solar storage systems, and other high-demand applications.

One of the key advantages of 18650 cells is their high discharge capability. Many variants support high current output, making them suitable for devices that require bursts of power such as flashlights, power tools, and RC vehicles.

Safety is an important consideration in lithium-ion battery design. Most 18650 rechargeable batteries include built-in protection circuits (in protected versions), which guard against overcharging, over-discharging, short circuits, and overheating. Unprotected versions are typically used in controlled environments such as battery packs.

The cylindrical steel casing provides structural durability and protects the internal chemical components from physical damage. This makes the battery suitable for rugged applications and portable use.

In New Zealand, 18650 batteries are widely used in torches, vaping devices, solar lighting systems, portable electronics, DIY electronics projects, and battery pack replacements. They are also popular in renewable energy storage applications due to their scalability.

Charging is typically done using dedicated lithium-ion chargers designed for 18650 cells. Proper charging ensures long battery life and safe operation, preventing damage from overvoltage or improper current levels.

The battery is also known for its long cycle life. With proper usage, it can maintain performance over hundreds of charge-discharge cycles, making it a reliable long-term power source.

Maintenance is minimal but important. Users should avoid over-discharging, store batteries in a cool environment, and use compatible chargers to maximise lifespan and safety.

Key Points

Standard 3.7V Lithium-Ion Cell

Provides stable and widely compatible voltage for electronics and power systems.

High Energy Density Design

Stores significant power in a compact cylindrical form factor.

Rechargeable Long Cycle Life

Capable of hundreds of recharge cycles with proper use and care.

Versatile Application Use

Suitable for torches, electronics, solar systems, and DIY battery packs.

Benefits

Reliable Portable Power Source

Delivers stable energy output for a wide range of devices.

Cost-Effective Rechargeable Solution

Reduces the need for disposable batteries through repeated use.

Flexible System Integration

Can be used individually or in multi-cell battery pack configurations.

Widely Compatible Standard Format

Used in many consumer electronics and industrial applications.

Why Choose This 18650 Rechargeable Battery 3.7V?

This 18650 rechargeable battery is designed for users who need dependable, high-capacity power for electronic devices and custom projects. Unlike standard disposable batteries, it offers rechargeable performance and long-term cost savings.

Its key advantage is versatility. It can be used in a wide range of applications including torches, electronics, solar systems, and battery packs.

It is also highly efficient, delivering stable voltage output and strong discharge performance suitable for both low and high-power devices.

Durability and rechargeability make it a long-term energy solution for both everyday users and technical applications.

For New Zealand users working with electronics, DIY projects, or portable power systems, the 18650 battery is an essential and reliable component.

Conclusion

The 18650 rechargeable battery 3.7V NZ is a powerful and versatile lithium-ion cell used across electronics, DIY systems, and portable devices. It offers high energy density, rechargeable performance, and wide compatibility.

With long cycle life and stable output, it is suitable for both consumer and technical applications. From flashlights to solar storage systems, it provides reliable and efficient energy delivery.

For New Zealand users needing a dependable rechargeable power source, the 18650 battery is a practical and essential choice.