Efest 21700 Vape Battery 2100mAh 35A – IMR Mod Cell

The Efest 21700 is a high-drain IMR battery built for vapers running sub-ohm mods that need stable, high-current output. Rated for 2100mAh capacity with a 35A discharge rating and a 3.7V nominal voltage, it favors strong, consistent power delivery over long runtime, which is the trade-off vapers running demanding builds usually prefer.

It suits single or dual-battery box mod users who prioritize stable output at high wattage over maximum time between charges, and anyone replacing a worn or aging 21700 cell in an existing mod.

Key Features

• High-drain IMR 21700 lithium battery chemistry
• 2100mAh capacity rated for strong current delivery
• Up to 35A continuous discharge rating
• 3.7V nominal voltage, standard for 21700 vape cells
• Flat top design for compatibility with common vape mod battery bays
• Rechargeable using a compatible external charger

Compatible Devices

This battery fits vape mods built for the 21700 size, including advanced box mods and high-wattage devices, as well as dual-battery mod setups that require two matched cells. It is not compatible with mods designed only for 18650 batteries, so check your device's specifications before ordering.

Safety and Usage Guidelines

• Use only with vape mods that support the 21700 battery size
• Avoid discharging the battery below its safe voltage threshold
• Charge exclusively with a quality external charger designed for lithium cells
• Store in a protective battery case rather than carrying it loose in a pocket
• Insert with correct polarity and adjust device wattage appropriately before use

Specifications

Spec	Detail
Battery Size	21700
Capacity	2100mAh
Discharge Rating	Up to 35A
Nominal Voltage	3.7V
Chemistry	IMR lithium
Top Type	Flat top

Delivery Across Dubai & UAE

Vape Dubai King ships genuine Efest batteries with fast delivery in Dubai, Abu Dhabi, and Sharjah, plus cash on delivery available across the rest of the UAE.

Frequently Asked Questions

Is this battery good for high-wattage vaping?

Yes, the IMR chemistry and 35A discharge rating are built specifically for high-drain use in sub-ohm mods and dual-battery setups.

Can I use this battery in any vape device?

No, it only fits mods designed for the 21700 battery size; 18650-only devices are not compatible, so check your mod's specifications first.

Is it safe to charge and use daily?

Yes, when charged on a quality external charger and used within a compatible mod, IMR batteries like this one are designed for safe, regular high-drain use.