XTAR X2 Vape Battery Charger
by XTAR
No reviews yet — be the firstXTAR X2 brings USB-C input and 2A fast charging to dual-slot 18650 and 21700 care. LED charge indicators, auto cut-off, wide bay design. £16.99.
£16.99sold individually · inc VAT
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Written and fact-checked by the VapeCity team · Updated June 2026
XTAR X2: USB-C dual-slot charger with 2A fast charge for 18650 and 21700
The XTAR X2 is the fastest dual-slot charger in the XTAR range at VapeCity. Its USB-C input accepts up to 2A per slot, cutting charge time for a 3,000mAh 18650 from the three hours of a 1A charger to under two hours, and from the five to six hours of the entry-level VC2 to a fraction of that. For vapers who run high-capacity regulated mods and want spares topped up during the day rather than overnight, the X2's charge rate is the practical advantage.
The USB-C input is the other headline feature. Every other XTAR charger at VapeCity uses micro-USB; the X2 uses the same USB-C standard as current smartphones, laptops and tablet chargers. If your desk or bag already has a USB-C multi-port charger, the X2 consolidates onto that single adapter without adding another cable type to your kit. At £16.99, it is the premium option in the XTAR range here, priced for the charge-speed upgrade it delivers.
- USB-C input: the X2 is the only XTAR charger at VapeCity with USB-C, letting you power it from the same cable as your phone, laptop or any modern USB-C charger in your setup.
- Up to 2A per slot doubles the charge speed of standard 1A chargers: a 3,000mAh 18650 charges from flat in under two hours at full rate.
- Dual independent slots charge two cells simultaneously; both channels remain active at their rated current without sharing or throttling.
- Wide bays with spring-loaded contacts fit 18650, 20700 and 21700 cells without adapters or tray changes.
- LED charge indicator per slot: straightforward visual status with no screen to power or maintain.
- Automatic 4.2V cut-off, reverse polarity protection and short-circuit protection on both channels.
On this page
Why USB-C matters on a vape battery charger
USB-C has become the universal standard for consumer electronics in 2024 and 2025. Most current phone chargers, laptop accessories, and desk multi-port units are USB-C first. Having a vape battery charger that runs on the same cable as your phone means one less cable type and one fewer adapter in your bag or on your desk.
The USB-C input on the X2 also enables the higher current delivery needed for the 2A per slot charge rate. Micro-USB ports are physically limited in the current they can reliably deliver at scale, which is one reason the step to 2A per slot in compact chargers required the move to USB-C.
How fast does the XTAR X2 charge 18650 and 21700 batteries?
At 2A, a 3,000mAh 18650 from fully flat charges in approximately 90 minutes. A high-capacity 3,500mAh 18650 takes around 100 minutes. A 4,000mAh 21700 at 2A reaches full charge in roughly two hours. Both slots operate at full 2A simultaneously, requiring a USB-C power source rated at 5V/4A or a USB-C PD adapter to maintain full speed on both channels.
If using a 5V/2A USB-C adapter with only two amps total output, each slot receives approximately 1A, matching the VC4's charge speed. Full 2A-per-slot performance requires a higher-output source. Most current USB-C multi-port chargers supply at least 45W, which more than covers the 20W peak draw of the X2 at full speed.
Compatible batteries for the XTAR X2
The X2 charges 18650, 20700, 21700 and 26650 Li-ion cells. The 18650 format covers the majority of regulated box mods currently on the market. The 21700 format is used by higher-capacity mods including several in the Geekvape Aegis range and current Vaporesso offerings. 26650 cells suit some high-drain sub-ohm setups.
Spring contacts adjust automatically to cell length. No tray changes or spacers needed when moving between cell sizes. Both slots are independent and can accommodate different cell sizes simultaneously.
XTAR X2 verdict
The XTAR X2 is the right choice for vapers who run 21700 or high-capacity 18650 mods and want the fastest possible charge turnaround from a compact two-slot charger. The USB-C input is a genuine quality-of-life upgrade if you have already standardised on USB-C elsewhere. At £16.99, it is £2 more than the VC4 four-slot unit, which only makes sense if speed and cable standardisation matter more to you than slot count.
For most vapers, the VC4 at £14.99 offers better value unless the 2A charge speed or USB-C input are specific priorities. But if they are, the X2 delivers them cleanly.
The good
- USB-C input: works with any modern USB-C charger or multi-port adapter.
- 2A per slot is the fastest charge rate in the XTAR range at VapeCity.
- 21700 and 26650 compatible with auto-adjusting spring bays.
- Full protection suite with automatic cut-off.
The catch
- Only two slots versus four on the VC4 at a similar price.
- LED-only indicators: no voltage display.
- Full 2A per slot requires a high-output USB-C source.
Specifications
| Slots | 2 |
|---|---|
| Input | USB-C, 5V |
| Charge current | Up to 2A per slot |
| Cut-off voltage | 4.20V ±1% |
| Compatible cells | 18650, 20700, 21700, 26650 Li-ion |
| Display | LED indicators per slot |
| Protections | Overcharge, reverse polarity, short circuit |
| Brand | XTAR |
| Price | £16.99 |
Frequently asked questions
What USB-C charger do I need for the XTAR X2 at full speed?
A USB-C adapter rated at 5V/4A or higher delivers full 2A to both slots simultaneously. A standard 20W or 45W USB-C PD charger works well. At 5V/2A, each slot receives approximately 1A.
How fast does the XTAR X2 charge 21700 batteries?
A 4,000mAh 21700 from fully flat charges in approximately two hours at 2A. This is roughly half the time of a 1A charger.
Does the XTAR X2 work with my existing USB-C phone charger?
Yes. Any USB-C charger at 5V/1A or above powers the X2. For full 2A per slot on both bays, use an adapter rated at 5V/4A or a USB-C PD unit.
Is the XTAR X2 worth the extra cost over the VC4?
If USB-C convenience or 2A fast charging are priorities, yes. If you need four slots and voltage monitoring, the VC4 at £14.99 offers better value.
Can the XTAR X2 charge two different battery sizes at the same time?
Yes. Each slot is independent and auto-adjusting, so you can charge an 18650 and a 21700 simultaneously at full rate.
Delivery
| Standard UK delivery2–3 working days | £2.99 |
|---|---|
| Next-day deliveryorder before 3pm, Mon–Fri | £5.99 |
| Orders over £40free standard UK delivery | Free |
Order before 3pm and we dispatch the same working day. Everything ships in plain, discreet packaging from UK stock, and it’s all TPD-compliant.
Returns
You have a 14-day right to cancel online orders. Because e-liquids, pods, disposables and pouches are sealed for hygiene, change-of-mind returns are accepted only when the item is unused and in its original, unopened packaging — opened or used products can’t be refunded. Anything faulty, damaged or incorrectly supplied is fully covered under the Consumer Rights Act, return postage on us.
Full details on our returns & refund policy page.
Customer reviews
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