18650 Li-ion Rechargeable Batteries (2x 3000mah Vape Batteries)


171 in stock

(7 customer reviews)

171 in stock

The HD3 18650 batteries are a pair of 20A (high drain) 3000mAh (large capacity) rechargeable battery for your Nectar device or any other vaporizer with a replaceable battery. They can be used the upgrade the existing battery of your vaporizer or just act as a replacement battery.

  • High capacity and discharge current, low internal resistance, no memory effect, ready for loading and unloading.
  • Stable performance, continuous charge and discharge for 500 times, battery capacity is not less than 85% of rated capacity.
  • Use original program, intelligent protection circuit design, 15kg explosion-proof battery internal pressure valve automatically opens to prevent explosion.
  • PTC internal safety switch automatically disconnected when short circuit and other damage happens

To ensure you never run out of power check out the Nectar Dual 18650 battery charger which doubles up as a power bank for your vaporizer or any other device!


18650 Li-ion Rechargeable Batteries

  • All 18650 Li-ion rechargeable batteries should be charged on a dedicated vape battery charger rated specifically for Lithium-Ion cells. Our selection can be found by clicking on 18650 battery charger uk
  • Never leave a cell unattended whilst charging
  • Keep all batteries away from animals and children
  • Wraps and insulators should be periodically inspected for tears or damage. If a battery has a damaged wrap, it should be repaired or disposed of immediately
  • If you are re-selling these 18650 batteries, it is your duty to pass these warnings onto your customers
  • Batteries usually have a cycle life of between 200-500 cycles (varies with manufacturer) before noticeable capacity drop off. Batteries should be recycled at this time
  • Do not crush, incinerate or modify
  • Only use within manufacturers specification

Same day dispatch, 7 days a week, except on public holidays.


These large capacity 18650 Li-ion rechargeable batteries can be used as replacement batteries for any product which accepts 18650 batteries, including torches and vapes such as our Nectar Gold dry herb vaporizer and our Nectar Platinum dry herb vape.

Why Nectar Batteries?

All our vape batteries are high-drain, rechargeable and offer a high capacity (3000mah or 3500mah). Just to be clear – ‘mah’ is milliampere/hour, it’s a unit that measures (electric) power over time. High-drain batteries are for power-hungry devices that need a constant supply of power.

Can Nectar Batteries Be Used with Any Device?

Yes! The 18650 Li-ion rechargeable batteries we sell in our shop are suitable for any device or gadget that takes a 18650 rechargeable and replaceable battery, they’re not just for our vaporizers! 

Our vaporizers take standard 18650 batteries that can be recharged and replaced, giving you control and flexibility around charging your vaporizer.

What Batteries Do You Sell?

Here’s a list of the batteries we offer, they are all 18650 Li-ion rechargeable batteries:

18650 Battery 3000mah (x1 battery)

18650 Battery 3500mah (x1 battery)

18650 Batteries 3000mah (x2 battery)

Nectar Dual 18650 Power Bank & Charger

To complement our batteries we also offer a vape battery charger – as you have to have a way of charging up the batteries, right! Our Nectar Dual 18650 battery charger is not just a battery charger though – it’s also a power bank, and it comes with two 3500mah batteries included.  With this 18650 power bank, you can be charging your Nectar vaporizer whilst also charging your batteries – either at the same time or separately as you wish. 

What Size Batteries Does a Vaporizer Take?

The majority of vaporizers take 18650 Li-ion batteries which are the most popular sized battery for powering a vape device. 18650 batteries are a bit larger than standard AA batteries: 18mm by 65mm. Read on to find out more about the differences between 18650 and AA batteries.

Is an 18650 Battery the Same as an AA Battery?

No. 18650 and AA batteries are different in size, voltage, current discharge and type. Here’s a summary of how they differ in these aspects.


An 18650 battery is a rechargeable lithium-ion battery, while AA batteries can be many types such as zinc-carbon, alkaline, nickel-cadmium, nickel-metal hydride (NiMH), as well as lithium-ion. 


18650 Li-ion rechargeable batteries are slightly larger than standard AA batteries. In fact, ‘18650’ actually tells you the size of these batteries – the “18” refers to the diameter of the battery in millimeters (18mm) and the “65” refers to the length (65mm). But AA batteries don’t have their size in their name – their size is around 14.5mm in diameter and 50.5mm in length.


Typically, an 18650 battery has a nominal voltage of 3.6V whilst a Nickel-Cadmium (NiCD) or Nickel-Metal Hydride (NiMD) AA battery has 1.5V.  In simple terms, this means you’d need 2.5 AA batteries (end-to-end) to get the same voltage as one 18650 battery. So 18650 batteries provide greater voltage (Voltage is what makes electric charges move, it pushes the charge…). 

Discharge of Current

In terms of discharge of power, a standard AA alkaline or NiMH battery offers between 2000 and 3000mah. Whilst our 18650 batteries are 3000mah and 35000mah (so not that different from an AA) – the difference is the way in which the 18650 discharges the current. An AA battery draws only a few amps at any one time, the 18650 battery can draw a lot more current, hence the term ‘high-drain’.


1-Year Warranty: 96% of people keep their Nectar device, but just in case we offer a 12 month limited warranty (extendable to 3 years at no charge), 14-day money back guarantee & 24/7 customer service. The warranty can be claimed for defects due to faulty workmanship or materials arising from normal use of the device. To claim, please contact us via email (info@NectarMedicalVapes.com) or WhatsApp (+44 7732 415 188). Moreover, if you just fancy a chat or would like more information then feel free to call us (+44 207 050 0737).

7 reviews for 18650 Li-ion Rechargeable Batteries (2x 3000mah Vape Batteries)

  1. Hamid

    First you’ll be amazed ss it’s 3500 not 3000 as been advertised.
    Second, although all nominal capacity is 35% more than actual chargeable of all brands. But this LG 3500 give you 2200 mah actual to compare with other brands that I used with max. 1880 mah.
    Keep the charge for heavy vapers very well as I’m one of them.
    You get roughly about a FULL DAY VAPING charge out of it.
    So happy with it and suggest all vapers to try it.
    You will get value for money.👍👌

  2. Tony

    I’ve got to say these batteries last a hell of a long time! I’m well chuffed!

  3. MDB

    Great batteries

  4. Colin Farmer

    Great batteries. Fast postage thanks!

  5. Mr. Gerald Richmond

    Obviously, the batteries are only much good in the vape itself! But they are, and you should always have spares of anything that is essential ;-)

  6. Antony

    Great company to deal with. Fast delivery and great advice when needed. Will use you again.

  7. Elfy Baker

    Item received promptly, packaging and product well made, great company communication, very happy :)

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