Hohm Tech Life 4 18650 Battery – 3015mAh, 22.1A

Hohm Tech Life 4 18650 Battery – 3015mAh, 22.1A

The Hohm Tech Life 4 is a flat-top 18650 lithium-ion cell with 3015mAh of capacity and a 22.1A continuous discharge rating, made for regulated box mods that take removable batteries. $13.99 for one or $29.99 for the pack of two at UniVape. It is the cell for the Vaporesso GEN MAX 220W, which takes two and ships without batteries, and it sits on our mod batteries page.

The cell

The number that matters for vaping is the continuous discharge rating, and the Life 4's is 22.1A. On a regulated mod that works out to about 63W per cell, so a pair covers roughly 125W. Hohm Tech also publishes a 31.5A maximum and a 37.1A pulse figure; both come with temperature and time limits, so set your wattage from the 22.1A continuous rating and leave the other two alone. The GEN MAX can be set as high as 220W; on a pair of Life 4 cells, keep it at or under about 125W.

Capacity is 3015mAh, or 10.85Wh, per cell. The chemistry is Hohm Tech's QSP Li-NMC, rated to hold 70% of that capacity after 500 charge cycles, and the cell accepts a charge rate of up to 4.43A. It is flat top and unprotected, which is what box mods are built for: the mod supplies the protection circuit, and the handling rules further down this page cover the rest.

Specifications

One or two?

Count the battery slots in your mod. A single-battery mod takes one cell. A dual-battery mod such as the GEN MAX 220W ($64.99) takes two, and those two should be the same model and age: bought together, charged together and kept as a pair for as long as you use them. That is what the pack of two is for. If you want spares for a dual-battery mod, buy them as a second pair and do not mix the pairs.

How it compares

Against a kit with a built-in battery: the Smok Nord 6 ($59.99) has 3800mAh sealed inside, about 14Wh, and charges by USB-C with nothing to swap or carry. A pair of Life 4 cells stores 21.7Wh, roughly half as much again, and when they run down you drop in a charged pair instead of waiting on a cable. When the cells wear out you replace $29.99 of batteries, not a $59.99 device. The trade is that loose lithium-ion cells need the care described below. If that is more than you want to manage, a built-in kit from the vape devices page is the simpler buy.

Who it suits

Anyone running a regulated mod on 18650 cells, and in particular anyone buying the GEN MAX 220W: the mod is sold device-only, so it needs two of these, a tank and e-liquid before it makes vapour. The tank we stock for it is the SMOK TFV18 ($39.99, 7.5mL, two mesh coils in the box), with replacement TFV18 coils at $17.99 for three. Sub-ohm tanks run freebase e-liquid at low strengths such as 3mg or 6mg, not 20mg salt; the newest freebase lines are Naked 100, Kapow and Lemon Drop Ice 60mL. Mod, tank and a pack of two come to $134.97, which clears the $100 line for free Standard shipping.

It is not for pod kits or disposables, which have their batteries built in, and it is the wrong size for devices built around 21700 cells.

Battery safety

• Carry and store cells in a plastic battery case, never loose in a pocket or bag where keys or coins can short them.
• Check the wrap and the insulator ring before every use. A cell that is torn, nicked, dented or corroded does not go back in the mod.
• Stay at or under 22.1A, about 63W per cell on a regulated mod. In an unregulated mechanical mod nothing limits the current, so keep the coil at 0.2Ω or higher.
• Use two cells of the same model and age in a dual-battery mod, and never pair a new cell with a used one.
• Charge on a charger made for lithium-ion cells, or through the mod if its maker allows it, and never leave charging cells unattended.
• Replace cells when they stop holding charge or after about a year of regular use, and take old ones to a battery recycling drop-off, not the garbage.

Hohm Tech Life 4 18650 — frequently asked questions

What devices does the Hohm Tech Life 4 18650 fit?

Regulated mods built for removable 18650 cells. At UniVape that is the Vaporesso GEN MAX 220W, which takes two. Pod kits and disposables have built-in batteries and do not use it.

How many watts can a Hohm Tech Life 4 handle?

Its continuous rating is 22.1A, which is about 63W per cell on a regulated mod and roughly 125W for a pair. Set your wattage from that figure, not from the 31.5A maximum or the 37.1A pulse rating, which both carry temperature and time limits.

Should I buy one battery or the pack of two?

One for a single-battery mod, the pack of two for a dual-battery mod such as the GEN MAX 220W. Two cells that share a mod should be the same model and age and stay together as a pair. $13.99 for one, $29.99 for the pack of two.

Is the Hohm Tech Life 4 protected, and is it flat top or button top?

Flat top and unprotected, which is the standard for box mods: the mod provides the protection circuit. That is why the cell should travel in a case and come out of service if the wrap is damaged.

Where can I buy Hohm Tech Life 4 batteries in Canada?

At UniVape: same-day delivery across Toronto and the GTA from 335 Yonge Street, pickup in store, or shipping Canada-wide, free over $100. 19+ only, ID checked at the door.

Ships Canada-wide from Toronto; same-day delivery across the GTA and pickup at 335 Yonge Street. 19+ only, ID checked at the door.