Geekvape Aegis X

"A truly impressive mod with a gigantic display and genuinely innovative features. Just be aware of the 'Auto' feature gotcha!"

Intro

The Aegis X, a classic from a golden age of quality & genuine innovation. In UK at least, it's still easily available at giveaway prices (Nov 2025). Its huge display will be a primary attraction, but merely the start of what is imo an extremely impressive mod. What a pity that Geekvape didn't develop and build these ideas into their current mods, instead of abandoning in favour of meaningless gimmicks.

There is a particular gothcha & some minor annoyances, but nothing to prevent the Aegis X from a highest recommendation, especially at the current low clearance prices in UK

🏆 Proud Record Holder of "The Most Useless User Manual Ever Written" Aegis X User Manual 🏆

Modes

M1-M4 (User Memories) - stores current mode and settings within mode, but current colour & theme remains common to all memories as does the ABB (see below) status. Notably the questionable "Auto" function can be individually enabled.

👍 Power - works extremely well in this mode, delivering a very similar output to the Aegis Solo V1, totally unaffected by the Stainless Steel firmware bug. Like the Legend V1, the Wattage display jitters around by ~0.5W during the fire cycle but this is just a firmware idiosyncrasy, not a problem.

There are 3 boost options which affect the Wattage ramp up at the start of the Fire Cycle

Standard - a near instantaneous delivery of the set Wattage upon a Fire button hold-down. I normally use this subsetting
Soft - initially jumps to ~9W less than the set Wattage, then linearly rises to the set Wattage over the next 0.4 seconds. The initial Wattage delivered won't be less than 5W (in the case of very low wattage settings)
Powerful - Like "soft" but initially jumps to ~9W higher, correcting over the next 0.4 secs. This subsetting may be useful for reducing heatup time, especially with heavier gauge coils

The 9W over/undershoot remains the same irrespective of set Wattage (delivered Wattage won't go below 5W).

"Auto" is another Power Mode sub-mode, accessible from the "advanced" setup menu (see below).

Aegis X Power Mode fire cycles. The mod was set to 15W to exaggerate the effects of the over/undershoots (~9W irrespective of set Wattage)

👍 VPC (Variable Power Curve). Explained on this page, scroll down to "modes of operation". The most versatile VPC I've seen on any mod so far. There 6 power steps (5 on the Aegis Solo V1), and the time interval for P1-P6 is variable between 0.55-1.25 seconds with 0.1 second steps.

The pic shows traces for P1-P6 as 30W, 5W, 30W, 5W, 30W and 5W respectively (chosen for demo purposes, we'd never set it like this for vaping). In the upper trace, the time interval is set to 0.55 secs, and below it's set to 1.25 secs.

VPC isn't essential for dimitri vaping, but with such versatility it becomes more viable to experiment around with heatup times etc, in a similar manner to the "Standard/Soft/Powerful" modes already mentioned.

👎 Temp Control Modes (SS/TCR, NI/TCR, TI/TCR and TCR/TCR) Like the Legend V1, limited testing indicates unsatisfactory performance in these modes. The main issue appears to be excessive reaction/correction times resulting in long over and undershoots. I no longer use TC so this isn't an issue for me

An intriguing VPC capability. Demo of min & max time intervals of the same P1-P6 demo values

Bypass Unlikely to be used for Dimitri, appears to function identically to the Legend V1 equivalent described on its review, displaying ~4.15V and live Wattage on screen. For Dimitri, this mode can be ignored.

Advanced Setup Menu (accessed from holding up/down keys in the mode select state)

👎 Auto - Strongly recommend disabling An early version of the "smart" mode, used on later Geekvape mods (see Solo 3 review). When enabled, if mod is in power mode when the user accepts a new coil value (i.e. responding to a "New Coil" popup), the existing Wattage setting is immediately replaced with a new value depending on the new coil resistance (see pic). At lower resistances, Wattages appear to roughly match the Z-series and X-series resistance/nic power ratings but in any case they're way too high for Dimitri and imo a very nasty ticking time bomb for the unwary. The factory setting for Auto mode is "off", I suggest keeping it that way.
Theme - 2 additional display layouts can be selected in addition to the factory default
Colour - 4 additional colour schemes can be selected
Version - displays firmware version

Left: Shown on Power Mode screen when 'Auto' is enabled. Right: Wattages that "Auto" sets for various resistance. Double-check after attaching tank that you're not gonna push 65W through your emesh!

👍 ABB (Active Battery Balancing). When enabled (factory setting is off), the mod begins to balance out any differences in charge state of the installed batteries. During testing I found this to work extremely well, balancing one fully charged cell and a totally discharged cell to within 0.1V in <2 hours (see pic). When switched off, balancing is still performed but (like the Legend V1) only at the end of a charge cycle when one/both batteries is/are near to fully charged. Currently I have no information on why anyone would want to switch off ABB, as it seems very useful, particularly if (like me) you prefer not to fully charge your cells.
Reset - reverts to factory settings

Left: the "Advanced Setup Menu" Right: Active Battery Balancing working. Top is after insertion of one fully charged & another totally flat battery. Within 2 hours they were matched to within 0.1V. Note that the battery level meters are a little inaccurate but Voltages shown are good.

Pros & cons

🙂 Incredible large, clear & bright display. Massively impressive to me, but imo could have been even better still. Much empty wasted space that could have been used for futher enlarging text. No real complains though, I no longer need reading glasses to see Wattage!

🙂 Apart from TC modes (which I no longer use), it seems to work extremely well. Free of the stainless steel firmware bug and showing real-time displays of Wattage, resistance, Volts and Amps during the fire cycle.

🙂 Exterior Build quality, seems to have the same kind of robust rubber shock proofing, battery door assembly and top 510 faceplate as the Legend V1. The display may possibly be prone to scratching but imo unlikely to be a breaking risk.

🙂 Currently easily available at rock-bottom prices in the UK, at least. Unbelievable bargain.

🙂 Active Battery Balancing is very useful (to me) and works extremely well. Factory default is off, so needs to be enabled in the advanced setup menu

😬 Useless and potentially unsafe Auto function. Hard to see any use for this, even for nic vapers, especially if using higher resistance MTL coils

☹️ User manual is totally, totally useless, and only low-quality information available elsewhere concerning different modes etc

☹️ In common with the Legend V1, usb charge port is buried deep in rubber shockproofing under a thick rubber plug. Tanks will likely need to be removed and much care and patience advisable when inserting/removing charge lead.

😐 I'm still not accustomed to the sideways display. I keep clicking buttons and wondering why the display hasn't illuminated, forgetting I need to turn it 90° horizontally

☹️ The M1-M4 user memories might be handy for some, but I don't use them & it's a pain to have to keep clicking past the M option every time I want to change mode.

☹️ Entering the advanced setup menu isn't ideal as it involves simultaneous pressing of the two lower buttons in the mode select mode. So it's almost impossible to avoid changing whatever field happens to be selected at the time, which can by chance bring about undesireable vaping settings. Not great but liveable withable.

Tempted? I certainly was at £20:99 inc free shipping, I bought two and am gagging to get yet another in the red/black 😍

510 faceplate & charge port location almost identical to the Legend V1

Battery door also almost identical to the Legend V1

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