Eizfan 21700 3750mAh 30/40A Max Battery

The Eizfan 21700 3750mAh Battery is a high-drain rechargeable lithium-ion battery designed for powerful vape mods and high-performance electronic devices. Combining a strong 3750mAh capacity with a 30A continuous discharge rating and up to 40A pulse output, this battery delivers stable power, fast ramp-up times and reliable all-day performance.

Built for demanding applications, the Eizfan 21700 offers an excellent balance between battery life and high-current output. Its low internal resistance helps maintain efficient voltage delivery, making it ideal for sub-ohm vaping and high-wattage devices that require consistent performance.

Engineered with advanced lithium-ion technology, this 21700 battery provides dependable power output across the discharge cycle while supporting fast charging and stable operation under load.

21700 3750mAh Battery Specifications:

• Battery Size: 21700
• Model: IMR21700
• Rated Capacity: 3750mAh
• Nominal Voltage: 3.7V
• Voltage at End of Discharge: 2.9V
• Maximum Continuous Discharge Current: 30A
• Maximum Pulse Discharge Current: 40A
• Standard Charge Current: 740mA
• Maximum Charge Current: 3700mA
• Low Internal Resistance (16mOhm)
• Rechargeable Lithium-Ion Battery
• Flat Top Design
• Approximate Size: 21.8mm x 70.6mm

Safety Information:

• Always use a compatible external battery charger
• Do not overcharge, short circuit or expose to extreme temperatures
• Never carry loose batteries with metal objects such as keys or coins
• Inspect battery wraps regularly and replace damaged wraps immediately
• Only use within manufacturer-recommended limits

What's in the box?

• 2x Eizfan 21700 3750mAh Batteries