510 Thread Battery Buying Guide UK: mAh, Voltage, Preheat and Cartridge Fit
Which 510 thread battery should I buy?
Match the battery to the cartridges you use: a 350-500 mAh pen is enough for 0.5-1 g carts, 650-1000 mAh suits 2 g and 3 g carts and all-day use; variable voltage between about 2.4 V and 3.6 V protects flavour; a preheat function helps thick live-resin oil; and check the physical fit – wide 2-3 g carts do not sit inside every concealed-style battery. USB-C charging is now standard.
Since the UK banned single-use vapes on 1 June 2025, a rechargeable 510-thread battery with replaceable cartridges is the reusable way to vape oil. The good news is that the 510 thread is a universal standard, so almost any cartridge fits almost any battery. The differences are capacity, voltage control, preheat, activation style, physical fit and price. This guide explains each and maps them to the batteries we currently stock. If you are new to the format, start with what a 510 thread battery is.
The five specs that matter
| Spec | What it means | What to look for |
|---|---|---|
| Capacity (mAh) | How much charge the cell holds | 350 mAh: pocket pen, charge most days. 500-650 mAh: a day or two. 1000 mAh: several days, or 2-3 g carts |
| Voltage range | How hard the coil is driven | About 2.4-2.8 V for flavour, 3.0-3.6 V for thicker oils and more vapour; above 4 V most carts taste burnt |
| Preheat | A 10-15 second low-power warm-up | Useful for live resin, rosin and cold oil that will not draw; usually two clicks |
| Activation | Button or draw-activated | Button gives control and a lock (five clicks); draw-activated is simpler and has no button to press by accident |
| Cartridge fit | Length and diameter the battery accepts | Standard 0.5-1 g carts are about 10.5 mm wide; 2-3 g carts are longer and wider, so check the stated maximum |
Batteries we currently list, by use
| Battery | Capacity / voltage (as listed) | Notable features | Approx. price |
|---|---|---|---|
| Cartisan Button VV 350 | 350 mAh, variable voltage | Slim button pen, USB-C | £10 |
| Exxus Twistr 2.0 | Adjustable voltage dial | Twist base, USB-C | £12 |
| Wulf Kodo Pro (X-Ray series) | Variable voltage | Compact box style, one-button operation with LED indicator | £20 |
| Yocan Wulf Recon 4G | See listing | Built for larger cartridges (up to 4 g as listed) | £20-£25 |
| Wulf Deck | 500 mAh, 2.4-4.0 V in five steps, 12 s preheat | Skateboard-deck shape, several colours | £25 |
| NEU Covert Pro MAX II | 1000 mAh, 1.8-4.2 V, preheat | Conceals carts up to 3 g (max. about 18 x 51 mm or 12 x 63 mm), display screen, draw-activated, USB-C | £25 |
| Cartisan Inspector | 650 mAh, variable voltage | Torch-style body hides the cartridge | £35 |
| Exxus Adapt | 2.0-4.2 V, 10 s preheat | Adjustable height and width for 2 g carts, magnetic connection, oil-level window | £40 |
Which one for you?
- Cheapest reliable option for 1 g carts: the Cartisan Button VV 350 or the Exxus Twistr 2.0 – both under £15 with adjustable voltage and USB-C.
- Thick live-resin or rosin carts: anything with preheat and a low starting voltage – Wulf Deck, NEU Covert Pro MAX II or Exxus Adapt. Start at 2.4-2.6 V.
- 2 g and 3 g cartridges: the NEU Covert Pro MAX II (up to 3 g, within its size limits), the Exxus Adapt (adjustable for 2 g) or the Yocan Wulf Recon (up to 4 g).
- Discretion: the concealed designs (Covert, Inspector) hide the cartridge completely; the trade-off is the size limit on carts.
- Battery life on a long day: 1000 mAh – the Covert Pro MAX II – or carry the small pen plus a cable.
Voltage: a simple starting table
| Oil type | Start at | Notes |
|---|---|---|
| Distillate | 2.8-3.2 V | Thin oil; higher settings give more vapour but harsher flavour |
| Live resin / rosin | 2.4-2.8 V after preheat | Thick; preheat prevents dry hits |
| CBD cartridges | 2.6-3.0 V | Usually distillate-based; follow the cart maker’s advice |
| Ceramic-coil carts | 2.6-3.2 V | Ceramic tolerates slightly higher voltage than wick coils – see ceramic coil vapes |
If a cart tastes burnt, drop the voltage before anything else; why does my vape taste burnt covers the other causes. If it will not fire at all, what the blinking lights mean and seven fixes for a pen that is not hitting will usually solve it in a minute.
Charging, care and recycling
- Use the supplied cable or a 5 V/1 A USB source; do not charge on a fast-charge brick unless the maker says you can, and never leave a battery charging unattended overnight. Full guidance: how to charge a vape pen safely.
- Wipe the 510 connector with a dry cotton bud each week; oil on the centre pin is the most common cause of “no connection” – see how to clean a 510 battery.
- Do not over-tighten cartridges; finger-tight is enough. Over-tightening pushes the centre pin down and breaks contact.
- Vape batteries are electrical waste. Take dead ones to a WEEE collection point rather than the bin; our guide to disposing of used vape pens explains how.
UK buying notes
Batteries are hardware and contain no cannabinoids, so they are not subject to controlled-drugs law – the cartridges you put on them may be; read Is THC legal in the UK?. Vape hardware is sold to adults 18+ only, and single-use (disposable) vapes cannot lawfully be sold in the UK at all. UK delivery is tracked in 2-4 business days, Europe available; see the shipping policy.
Quick answers
Do all 510 cartridges fit all 510 batteries?
Electrically, yes – the thread is universal. Physically, wide or long 2-3 g carts may not fit inside concealed-style batteries; check the stated maximum size.
What voltage should a 510 battery be set to?
Start around 2.6-3.0 V. Go lower for thick live-resin oil (after preheating) and never above about 3.6 V unless the cartridge maker says so.
How long does a 350 mAh battery last?
Roughly 150-250 draws, or one to two days for a typical user. A 1000 mAh battery lasts about three times as long.
Is a draw-activated battery better than a button?
Neither is better; draw-activated is simpler and pocket-safe, a button gives preheat and lets you lock the device with five clicks.
Can I use a 510 battery for CBD cartridges?
Yes. CBD carts use the same thread; set 2.6-3.0 V and follow the cartridge maker’s advice.
Ready to browse? See 510 batteries and cartridge vaporisers, cartridges or the full accessories range.
This article is for informational purposes only, for adults (18+). Cannabis laws differ by country – always follow the rules where you are and use responsibly.
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Adults 18+ only. This article is general information, not medical advice. Our products are not intended to diagnose, treat, cure or prevent any disease. If you have a health condition, are pregnant or breastfeeding, or take medication, speak to a qualified healthcare professional before using any cannabinoid product.
