21700 3000MAH 3.7V BATTERY

21700 3000MAH 3.7V BATTERY by Unbranded keeps your device safely powered. Always use the correct battery and charger for your device. Order from Vapes Direct Wholesale for fast UK dispatch, free UK delivery on orders over £30 and trade pricing for UK vape shops.

21700 3000mAh 3.7V Battery

A 3.7V 21700 lithium-ion cell rated at 3000mAh. The 21700 format is physically larger than the 18650 it replaced in many modern mods, and that extra size translates directly into longer runtime and better current handling at higher wattages.

Supplied as a bare cell for use in external chargers and 21700-compatible regulated devices. If your mod shipped with a 21700 adapter sleeve, keep it — it lets the same device run 18650s as a backup.

Features

• 3000mAh capacity in the larger 21700 format
• 3.7V nominal output
• Rechargeable lithium-ion cell
• Suited to higher-wattage devices
• Sold as a bare cell for external charging

Battery Safety — Please Read

• Charge only in a dedicated Li-ion charger, and never unattended.
• Transport cells in a plastic battery case, never loose in a pocket.
• Check the wrap before every use — replace or retire any cell with damaged wrapping.
• In dual-cell mods use a matched pair of the same brand, model and age, charged together.
• Keep your build within the cell's rated continuous discharge current.
• Retire cells that are swollen, damaged, or run unusually hot.

FAQs

Q: Can I use a 21700 in an 18650 mod?
A: No — a 21700 is both longer and wider. Some mods accept 21700s with 18650s via an adapter, but never the other way round.

Q: Is a 21700 better than an 18650?
A: For high-wattage vaping, generally yes. It typically holds more charge and handles current better, at the cost of a bulkier device.

Q: Does it come charged?
A: Cells ship at a partial storage charge. Charge fully in an external charger before first use.

Fast UK dispatch. Delivery times and free delivery threshold are shown at checkout. See our Shipping and Refund policies for full details.

For adults aged 18 and over only. We use age verification at checkout. All products are TPD/TRPR compliant and notified to the MHRA.