This listing uses an attributed 20A continuous test assessment rather than the wrapper’s 35A figure. Interpret that assessment under its test conditions and compare it with all exact device requirements; current rating alone does not establish safe operation.
The wrapper’s 35A figure must not replace a continuous-current assessment. This page uses an attributed 20A test assessment in its conditional calculations. Check the exact supplied-cell specifications, applicable test edition and temperature limits, together with every device requirement.
Mod Cells it takes Rated at Conditional estimate; check exact device requirements VOOPOO Drag X3 Pod Mod Kit 80W One 18650 or one 21700 80W About 57W VOOPOO Drag 5 Mod Kit 177W Dual 18650 Two 18650 177W About 115W VAPORESSO Armour Max Mod Kit 220W Dual Battery Two 21700, or two 18650 on the supplied sleeves 220W Not suitable, VAPORESSO specify 25A or better and this cell is 20A
- Fits
- VOOPOO Drag X3 Pod Mod Kit 80W, one cell
- VOOPOO Drag 5 Mod Kit 177W Dual 18650, two cells, bought and used as a matched pair
- Compatible only with an exact regulated device that accepts this cell and meets all manufacturer battery requirements. Low selected wattage alone does not establish suitability.
Does not fit
- a device requiring 21700 cells exclusively, without a manufacturer-approved 18650 sleeve or adapter. Never place an undersized bare cell in a larger bay. Approved physical fit does not override the device’s required cell-current rating
- Any mechanical mod where nothing limits the current the coil can draw
Not sure which cell your device requires? Send Vapesoko the exact device model and cell markings. Check the device manual and exact supplied-cell specifications for identity, physical fit, voltage, current and temperature requirements. Bay count or selected wattage alone is not a complete compatibility check.
A cell rated honestly, which is not how it is labelled
Efest are a rewrap brand; they buy cells from the companies that actually manufacture them and put their own sleeve on. That is normal in this industry and says nothing about quality on its own, but it does mean the number printed on the wrap is a marketing decision rather than a measurement. Whatever a wrap says, in Kenya or anywhere else, the continuous rating is the figure that decides what a cell can do.
Mooch’s 2020 test of four purchased Efest 20A/35A 3000mAh samples assigned a 20A continuous assessment. HKJ’s 2016 purple-cell review also reported results supporting use up to 20A under its test conditions. These are assessments of those tested editions, not measurements of every currently supplied cell. Check exact supplied-cell identity and all cell/device requirements.
The arithmetic that turns amps into watts
At an assumed 3.2V per cell and 90% conversion efficiency, the page’s continuous-current model gives about 57W on one cell or 115W on two. These are conditional calculations, not universal safe-output ratings or device approval. Check actual voltage, efficiency, temperature, cell limits and every exact device requirement, with an appropriate margin.
For a given regulated output, calculated current rises as loaded voltage falls. The 3.2V-per-cell and 90% efficiency figures used here are assumptions, not a universal cutoff or worst-case condition. Use actual device cutoff, voltage under load, efficiency, temperature and cell limits when assessing requirements.
Reversed, it tells you what a mod demands. Eighty watts from one cell needs about twenty-eight amps. A hundred and seventy-seven watts from two needs about thirty-one amps each. Two hundred and twenty watts from two needs about thirty-eight amps each.
Which mods this suits, and at what setting
Use the fitment table’s numbers as conditional current-model estimates. Check all actual cell and device requirements and leave an appropriate margin; a calculated value is not a certified operating ceiling or complete compatibility assessment.
The single-cell mod is the harder job, not the easier one
At the same output power, with comparable per-cell voltage and conversion efficiency, a regulated two-cell series setup draws less current from each cell than a single-cell setup. Follow the exact device’s battery requirements; cell count alone does not establish suitability.
Two cells in series double the pack voltage, so the same output power is drawn at half the current from each cell. A dual-battery mod at a hundred and fifty watts is easier on its cells than a single-battery mod at eighty.
Under the stated 3.2V and 90% efficiency assumptions, 80W from one cell requires approximately 28A, and 115W from two requires approximately 20A per cell. These estimates do not establish device acceptance or a comfortable operating margin. Check every exact cell/device limit and application requirement; a 30A comparison label alone does not approve a stocked cell for the X3. Reference: Vapcell P42A 21700.
Charging without shortening its life
Use the exact device manual to check whether in-device charging is supported and which cable and input it requires. A suitable external charger with independent bays can be useful when rotating removable cells. It does not make unlike cells a matched pair: use the same manufacturer, model and age, and keep paired cells together throughout their service life.
Use a compatible charger and the exact cell’s documented charging current, voltage and termination requirements. Charge indoors on a suitable hard surface and do not leave charging unattended overnight. Do not use a trickle charger for these lithium-ion cells.
Wraps, rings and the things that actually cause accidents
The cell’s external wrap and positive-terminal insulator help prevent unintended conductive contact and short circuits. They are not a protection circuit or proof of internal condition. Keep terminals away from conductive objects and stop using a cell with damaged insulation; follow the exact inspection and handling instructions.
Stop using a cell with damaged insulation and follow the exact inspection and service guidance. Replacing a wrap or insulator ring does not repair a dented case, internal damage, leakage or overheating history. Use qualified service only where the actual condition and instructions permit; external appearance alone does not establish that the cell is usable.
Never carry a bare cell loose in a pocket or bag. Metal objects across its terminals can cause a short circuit, overheating, fire or thermal runaway. Use an appropriate protective battery case and keep the terminals away from keys, coins and other metal objects.
Buying in pairs, and keeping them together
For a dual-battery mod, buy both cells at once, of the same brand and the same model. Charge them together, use them together, and never mix them with other cells.
Series cells carry the same main-string current. Differences in capacity, state of charge or resistance can cause unequal voltage or temperature behaviour and earlier cutoff of the limiting cell. Follow matched-pair instructions and keep the pair together.
Nairobi and its neighbouring towns are same-day from Vapesoko Nairobi; courier delivery reaches the rest of the country in 1 to 2 business days.
Another 18650 has arrived
Compare this page’s attributed 20A assessment with the other listing’s 10A rating. At assumed 3.2V per cell and 90% efficiency, 20A gives approximately 58W from one cell or 115W from two. These are conditional comparisons, not guaranteed output limits, runtime results or device approval. Compare Vapcell M35A 18650 3500mAh 10A Battery.
Best for
- Compare the X3’s requirements with the attributed 20A assessment
- Matched-pair selection using all Drag 5 and cell requirements
- An honestly stated 20A rather than a wrap claim
- Anyone who needs the arithmetic explained rather than asserted
Pack contents
- Cell: One battery cell of the named model; a matched pair requires two cells.
- Protective case: A plastic protective case is included with a single-cell purchase.
Required separately
- Equipment: A compatible device and charging arrangement that meet the exact cell instructions.
Check before ordering
- Specification: Confirm cell format, voltage, current rating and all device requirements.
- Handling: Keep exposed terminals away from conductive objects and use a suitable protective carry case.
Specifications
- Category: Accessories
- Consumable type: Batteries
- Format: 18650
- Rated capacity: 3000mAh
- Continuous discharge: 20A
- Figure printed on the wrap: 35A
- Nominal voltage: 3.7V
- Charge to: 4.20V maximum
- Discharge to: 2.50V minimum
- Terminal: Flat top, unprotected
- Brand: Efest
- Format: 18650, flat top, unprotected
- Continuous discharge rating used here: attributed 20A test assessment; verify exact cell edition and requirements
- Rated capacity: 3000mAh labelled capacity
- Calculated output estimate, one cell: About 57W at 3.2V/cell and 90% efficiency; conditional arithmetic, not device approval
- Calculated output estimate, two cells: About 115W at 3.2V/cell and 90% efficiency; conditional arithmetic, not device approval
- Recommended charge current: 0.5A to 1A on an external charger
- Sold as: A single cell. Buy two at once for a dual-battery mod
- Who it is for: Adult smokers and vapers, 18+. Not suitable for non-smokers or for anyone who has never used nicotine.
- Delivery: Same day in Nairobi and nearby towns on an early dispatch; typically 1 to 2 business days elsewhere in Kenya
