Samsung 40T 21700 4000mAh 30A Battery

The Samsung 40T is the 21700 cell most high-wattage vapers settle on. The 21700 format is physically larger than an 18650, and that extra volume is what buys you 4000mAh of capacity without giving up current delivery.

It holds a 30A continuous discharge rating, so it stays composed in sub-ohm builds where a lesser cell would sag mid-puff. In practice that means longer sessions between charges and steadier output right down the discharge curve.

Specification

• Model: Samsung 40T
• Capacity: 4000mAh nominal
• Continuous discharge: 30A
• Voltage: 3.6V nominal, 4.2V fully charged
• Format: 21700, flat top
• Chemistry: lithium-ion, rechargeable

Battery safety

Charge on a proper lithium-ion smart charger or a mod with correct onboard charging, never on an unbranded adapter. Do not carry a loose cell in a pocket or bag where it can touch keys or coins, keep spares in a plastic battery case, and retire any cell with a torn wrap, a dented body or signs of swelling.

Samsung 40T 21700 Price in Pakistan

One Samsung 40T 21700 cell costs Rs 2,400 at Vape Brothers. These are genuine cells, cash on delivery is available, and we ship across Pakistan in 1-3 working days.

Cells, chargers and the mods that take them

If your mod uses the smaller format instead, we stock the Sony VTC5A 18650 and the more affordable Samsung ICR18650 cell. A 4-slot CellKing charger lets you cycle a set safely instead of relying on onboard charging.

Check your device's battery bay before ordering, since some kits take 18650 only. High-wattage mods on our shelf include the VOOPOO Drag 3 177W and the Geekvape Aegis L200. Everything else is in accessories and devices.

Frequently Asked Questions

How much is the Samsung 40T 21700 in Pakistan?

Rs 2,400 for one cell at Vape Brothers, with cash on delivery and 1-3 day nationwide delivery.

Will a 21700 fit my mod?

Only if the battery bay is sized for 21700. Many mods that accept 21700 also take 18650 with an adapter sleeve, but never force a cell into a bay it was not built for.

What are the 40T's ratings?

4000mAh capacity with a 30A continuous discharge rating, 3.6V nominal and 4.2V fully charged, in a flat-top 21700 body.

How should I charge and carry it?

Use a lithium-ion smart charger or proper onboard charging, keep the cell in a battery case when it is out of the device, and never let it sit loose against keys or coins.