18650 Batteries
18650 batteries are the rechargeable cells that power external-battery vape mods. We have two flat-top 18650s on this page, from Efest and a VTC6 cell, both rated at 3000mAh. They suit anyone running a mod that takes removable 18650 batteries.
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The 18650s we stock
- Efest 18650 3000mAh: flat-top, unprotected lithium-ion cell, 3.7V nominal, with a 20A continuous discharge rating.
- VTC6 18650 3000mAh: flat-top, unprotected lithium-ion cell, 3.6V nominal, with a conservative 15A continuous rating.
Choosing the right battery
First, check your device takes an 18650. Some mods use the larger 21700 instead, and many pod kits have a built-in battery and don't need one at all. If your mod takes two batteries, use a matched pair: same make, same model, bought and used together.
The amp (A) rating is the continuous current the cell is rated for. Higher-wattage setups and lower-resistance coils draw more current, so check what your mod needs before choosing.
Safe handling basics
- Charge your cells in a proper external battery charger. See batteries and chargers.
- Never carry loose batteries in a pocket or bag where they can touch keys or coins. Use a battery case.
- Check the wrap before every use. If it's torn, nicked or peeling, stop using the cell.
- Don't use a battery that's been dropped hard, dented or got wet.
Looking for a mod to put them in? See vape mods or external battery vape kits. For other cells, see all vape batteries.
Questions we get asked
Are these batteries protected?
No. Both are flat-top, unprotected cells, which is normal for vape mods. That's why proper handling and a battery case matter.
Can I mix an old and a new battery in a dual-battery mod?
No. Always use a matched pair that are charged and used together.
Can I charge 18650s inside my mod?
Some mods allow it, but an external charger is the better habit and lets you check each cell.
Why buy from OB Vape?
OB Vape is an Irish, family-run vape shop in Drogheda, Co. Louth, open seven days a week. We send tracked delivery right across Ireland and do same-day local delivery around Drogheda, or you can collect in the shop. Everything we sell is genuine stock from established brands. We only sell to adults aged 18 and over, and we ID check orders where needed.