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The 18650 3.7V Lithium-Ion Rechargeable Battery (4 Pc Pack) provides energy storage for high-drain electronics and portable DIY projects. These cylindrical cells measure exactly 18x65 mm to fit standard battery sleds and flashlight housings. With a 3.7V nominal output and a 1000-cycle lifespan, they maintain reliable performance through frequent load shedding cycles.
Key Features
- Energy Density: High-capacity chemistry contained within a 35-47g cylindrical cell. Provides sustained power for high-drain devices.
- Cycle Life: Supports between 500 and 1000 full recharge cycles. Reduces the total cost per use significantly.
- Standardized Dimensions: Precise 18mm diameter and 65mm length physical build. Fits most commercial LED flashlight housings.
- Internal Resistance: Electrical impedance levels remain at or below 26mΩ. Minimizes heat buildup during rapid discharge.
- Voltage Parameters: 3.7V nominal output with a 4.2V peak charging limit. Prevents cell damage during standard charging.
- Thermal Range: Stable operation between -20°C and 60°C temperature extremes. Maintains chemistry integrity in high-heat environments.
Frequently Asked Questions
Can I use 18650 battery in a power bank?
These cells provide the energy storage for DIY and commercial power bank kits. Ensure the power bank circuit board supports 3.7V Li-ion chemistry.
How long does a 3.7V 18650 battery last?
A single cell survives 500 to 1000 charge cycles before capacity degrades significantly. Actual daily runtime depends on the current draw of the connected device.
