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There are many different types of batteries used in Electronic Cigarettes. The most common however, are various sized round, lithium-ion rechargeable batteries.

These types of batteries are not interchangeable with different chemistry batteries.

Lithium-ion cells are made in various sizes, often assembled into packs for portable equipment. Many types are also available with an internal protection circuit to prevent over-discharge and short-circuit damage. Safe and economic recharging requires use of chargers specified for these cells. Popular applications include laptop battery packs, electronic cigarettes and flashlights.

Battery Sizes

Battery sizes are shown using a 5 digit system, The first two digits refer to diameter, the second two to length and the fifth is usually a 0 indicating cylindrical therefore an 18650 battery is 18mm diameter, 65mm Length and round in shape.

Penstyle or Cig-A-Likes

Electronic Cigarette that resembles a real tobacco cigarette.
    • 280mah
    • 360mah


Different Sized Ego Batteries
    • 650mah
    • 900mah
    • 1000 mah
    • Ego Spinner

Big Batteries for Mods

Disassembled 18650 showing the internal coiled flat-pack lithium-ion cell
Different Size Batteries

Battery Safety

All batteries including rechargeable have a chance of failure. Battery failures can happen in many ways.

  • Suddenly stop charging
  • No longer supplying power to a device

These are simply failures which require replacement and proper disposal of the battery.

However, in some instances, there can be a larger scale failure.

  • Batteries can vent. This means that the gasses inside the battery build up pressure until a breach is found and they are released.
  • Batteries can catch fire and explode.
    • NEVER overcharge or discharge a battery more than it's stated capacity.
    • NEVER overheat a battery.
    • DO NOT drop, throw, or subject your battery to blunt force actions.

In the event of a battery venting, overheating, or catching fire. Quickly remove it outside and away from combustible materials. If you are unable to do so please do not hesitate to call your local emergency services.

  1. Charge them often. Do not try to fully discharge the battery packs frequently. This only adds strain. Several partial discharges (regular use) with frequent recharges are better for lithium-ion than one total discharge.
  2. Avoid heat. Short battery life is more likely to be caused by heat rather than charge/discharge patterns. Keep the lithium-ion battery cool. Avoid a hot car, for example.
  3. Don't charge up the battery pack just to store it away. When storing for long periods of time, keep the battery at a 40% charge level. Consider removing the battery from a laptop when running on fixed power. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery casing.)
  4. Use the right charger. By now you probably know that each kind of battery has its own technology, its own rate of charge and so on. Charging lithium packs correctly is one way to extend their life and to avoid damage.
  5. Don't use old batteries. Avoid purchasing spare lithium-ion batteries for later use. While it makes perfect sense to have 2 or 3 extra battery packs, so that you always have a fresh one charged up and ready to go, it isn't a great idea to just buy up batteries and keep them around for years before using them.
  6. Do not leave charging batteries unattended, there is a risk of fire. Use a charging bag for safety.

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