Instafill 3500 Review

by Jemma Wolfe

Instafill, Disposables


By Jemma Wolfe
Published On: 07-5-24
Read time: 12 mins

Instafill 3500 Rechargeable Disposable Vape Review
Instafill 3500 Rechargeable Disposable Vape Review

Instafill, Disposables

Instafill 3500 Rechargeable Disposable Vape Review

Offering up to five times the lifespan of regular disposable vapes, the Instafill 3500 is a rechargeable vape that promises cutting-edge convenience. Join me as I try out this groundbreaking device in my in-depth review.

As the vaping landscape continues to evolve, we are constantly seeking longer-lasting options that deliver both convenience and performance. In response to this growing demand, companies like Instafill are stepping into the spotlight, offering innovative solutions to meet the needs of modern vapers.

While you may not have heard of Instafill yet, the release of their debut product—the Instafill 3500— is poised to make a significant impact. But does this newcomer really have what it takes to earn a spot amongst the biggest names in disposable vapes? Well, that’s what I’m here to find out.

I’ve finally got my hands on this brand-new rechargeable vape, and I’m keen to try it out. Join me as I put this device to the test; uncovering how it works, how it performs and diving deep into all 14 flavour profiles. Now, let’s dive in!

Product Overview

Before I begin testing, let’s first explore the device itself in more detail.

What is Instafill 3500?

As a rechargeable disposable vape, the Instafill 3500 introduces a concept that is relatively new to the vaping scene, especially in the UK market. While larger, non-compliant big puff vapes do exist, they are not legal under TPD guidelines due to their failure to adhere to regulations.

Under these guidelines, disposable vapes are required to contain a maximum e-liquid capacity of 2ml, leading to an average lifespan of around 600 puffs. However, the Instafill 3500 breaks free from this limitation by introducing a rechargeable system.

The key to the extended puff count of the Instafill 3500 disposable vape kit lies in its innovative design. Unlike conventional disposables, which are limited to a 2ml e-liquid capacity, the Instafill 3500 boasts a separate e-liquid container to extend its lifespan while remaining compliant with regulatory standards.

Equipped with a 10ml e-liquid bottle, this rechargeable vape ensures that only 2ml of e-liquid fills the pod at any moment. This innovative design not only allows for an expanded puff count but also ensures full compliance with legal regulations.

First Impressions: Unboxing & Setup

When I first received this Instafill vape, I had no idea what to expect, as I was totally unfamiliar with this brand. But right out of the gate, I was impressed by the professional and sleek packaging and branding, which set a promising tone for what lay inside.

First Impressions: Unboxing & Setup

Upon opening the box, I was met with a USB Type-C charging cable. Although the cable itself is tiny, it’s a nice touch when brands make the effort to include a compatible power cable. As expected, the device itself was sealed in a transparent plastic wallet.

First Impressions: Unboxing & Setup

Once I freed the device from all its packaging, I found a red instruction booklet that contained illustrated step-by-step instructions on how to set up and use the device. This involves unscrewing the bottle cap and reattaching it along with the battery before filling the pod with e-liquid.

First Impressions: Unboxing & Setup

First Impressions: Design

Although the device is undeniably larger than a standard disposable vape, it’s still far smaller than I expected. In my hand, it feels no bigger than an average pod kit, and its compact rectangular shape feels reassuringly sturdy without feeling too bulky.

The detailed illustrated instructions made the setup process a breeze, even though it was the first rechargeable disposable vape I’d ever tried. Although it took me a little while to figure out how to screw the container bottle in place using the cap as a sort of “screwdriver,” I really liked the design once I got the hang of it.

The device itself sports a smooth metallic exterior that’s coloured to represent the flavour inside. The mouthpiece is small and compact and reminds me of the one found on Lost Mary disposable vapes, which I’m a huge fan of. However, my favourite design aspect has to be the refill container.

The 10ml refill container is entirely transparent, and so is the chamber it slides into. This transparent design meant I could keep an eye on my e-liquid levels at all times and clearly observe how much e-liquid was moving filling into the pod as I pressed the gold refill button. I found the refill button itself very easy to use, and prefer this over the self-refilling method used in other devices such as the Elf Bar AF5000.

First Impressions: Design

● Transparent e-liquid container
● Sleek metallic finish
● Compact but comfortable mouthpiece
● Comfortable rectangular shape
● Manual refill button


Product Specification

● Battery Capacity: 500mAh
● Pod Capacity: 2ml
● E-Liquid Reservoir Capacity: 10ml
● E-Liquid Type: Nicotine Salts
● Nicotine Strength: 20mg/ml (2%)
● Coil Type: Mesh
● Charging Type: USB Type-C (Charging Cable Included)
● Dimensions: 9cm x 4.3cm x 2.3cm
● Weight: 71g

Instafill 3500 Instructions

As this rechargeable vape involves more steps than a regular disposable vape, it’s important to carefully follow the setup instructions before diving right in. Here’s a detailed step-by-step guide on how to set up and use your Instafill disposable vape for the first time:

Instafill 3500 Instructions

1. Unbox the package and remove its contents. Gently open the plastic pouch, and take out the device along with the instruction manual.

Instafill 3500 Instructions

2. Slide out the battery and remove the bottle from the body of the device


3. Peel back the tape to separate the battery and cap. Unscrew the bottle cap and pull out the rubber lid.

Instafill 3500 Instructions

4. Re-insert the battery and click firmly into place.

Instafill 3500 Instructions

5. Place the bottle into the chamber and use the cap of the bottle as a screwdriver to tighten the bottle in place.

Instafill 3500 Instructions

6. Take the bottom cap and click securely in place beneath the bottle.

Instafill 3500 Instructions

7. Tilt the device downwards while pressing the gold refill button to fill the tank.

8. Wait 30 seconds and begin vaping!

Performance Testing

Now that my Instafill vape is all set up and ready to go, it’s time to dive into testing its performance. Here’s a breakdown of my firsthand experience with this device:


After just my very first inhale of the Instafill 3500, I knew I was in for a treat. The sensation was very much to my taste; it was light and airy and delivered a smooth throat hit without feeling harsh. This was perfect for me as I tend to prefer looser draws over tighter ones.

The mouth-feel felt very familiar and reminded me of some of my favourite disposable vapes such as the SKE Crystal Bar. The mouth-to-lung sensation is spot on, and fans of conventional disposable vapes will find that the Instafill provides an almost identical draw.


As the Instafill is a disposable vape, I wasn’t expecting much in terms of vapour production. However, I was met with a lot more cloud than I first anticipated.

The device produced more vapour than an average disposable vape, but nothing too obnoxious or out of the ordinary for an MTL device. While it doesn’t provide the most discreet vaping experience, it certainly doesn’t generate massive vapour clouds as you’d expect from high-powered DTL devices.


As flavour can make or break the overall vaping experience, I was really hoping for big things from this Instafill disposable vape— and it delivered!

I tried out two different blends when writing this review; Watermelon Candy Ice and Blackcurrant Apple, and both were undeniably delicious. Both profiles were incredibly potent and bursting with sweet and juicy notes that remained tasty and pronounced right up until the very last puff.

My favourite blend was by far the Watermelon Candy Ice profile, and as a die-hard fan of all melon-themed blends, this one was among the best I’ve ever tried!

Battery Life

If there’s one aspect of the Instafill that didn’t totally blow me away, it has to be the battery life. As this device is larger than your typical disposable, I was hoping it would house a larger battery to allow for extended vaping sessions. Unfortunately, this wasn’t the case.

It’s powered by a 500mAh battery, which is commonly found in most disposable vapes. This meant that I was able to get around 600 puffs out of it before it required recharging. While this was enough to last me a full day of vaping, I wish they sized up to extend the battery life. It also doesn’t include a battery life indicator feature, which meant I’d get no warning before it runs out which was pretty disappointing.

My Final Rating

Design: ⭐⭐⭐⭐⭐
Flavour: ⭐⭐⭐⭐⭐
Performance: ⭐⭐⭐⭐
Battery Life: ⭐⭐⭐

Final Test Score: 4.25 out of 5

Instafill 3500 Full Flavours List

In total, there are 14 different Instafill flavours to choose from. Here’s a little more about each of the blends.

Banana Ice Cream: Indulge in the creamy goodness of vanilla ice cream topped with ripe banana slices, creating a delectable treat.

Blackcurrant Apple: Experience the perfect balance of tangy blackcurrants and crisp, juicy apples, harmoniously blended for a flavourful vape.

Blueberry Fusion: Dive into a burst of juicy blueberries with hints of ripe summer berries, creating a refreshing and fruity vape.

Fizzy Cherry: Enjoy the sweet and tangy flavour of ripe cherries with an added fizzy kick, tantalising your taste buds with every puff.

Fresh Mint Mojito: Cool off with the refreshing taste of mint leaves, zesty lime, and a touch of sweetness, reminiscent of a classic mojito.

Lemon Lime: Savor the tangy blend of lemon and lime, creating a citrus symphony of refreshing flavours in each puff.

Berry Fusion: Delight in a medley of strawberries, raspberries, and blueberries, offering a burst of fruity goodness with every inhale.

Mixed Fruit: Experience a delightful blend of assorted fruits, delivering a harmonious mix of sweetness and tanginess.

Pineapple Ice: Transport yourself to a tropical paradise with the sweet and tangy flavour of chilled pineapple, refreshing and invigorating.

Polar Mint: Brace yourself for an icy blast of freshness, delivering a cool and revitalising vaping experience.

Raspberry Lemonade: Quench your thirst with a tall glass of lemonade topped with raspberries, recreating a refreshing summer drink.

Sour Blue Raspberry Ice: Experience a tangy twist on classic raspberry flavour, infused with a sour kick and a hint of icy coolness.

Strawberry Ice: Indulge in the sweet, sun-ripened taste of strawberries, complemented by a refreshing blast of menthol.

Watermelon Candy Ice: Enjoy the sugary sweetness of watermelon candy, enhanced by a frosty menthol breeze for a cool and satisfying vape.

Alternatives to Instafill 3500

When looking at rechargeable disposable vapes, options are still somewhat limited as this innovative technology is just beginning to emerge. However, when seeking alternatives to the Instafill 3500 disposable vape, one prominent contender stands out—the Elf Bar AF5000.

Similar to the AF5000, the Elf Bar AF5000 introduces a rechargeable system that extends the device's lifespan, offering a massive increase in puff count while remaining compliant with regulatory standards. With its 10ml e-liquid reservoir, the AF5000 ensures a seamless refilling process, allowing users to enjoy up to 5000 puffs per device.

While the filling mechanism on the AF5000 differs slightly from the Instafill, as the device auto-refills when tilted downwards, both devices possess many of the same key features. To find out more about this rechargeable Elf Bar, head over to my Elf Bar AF5000 Review.

Want to find out more about how Instafill vapes compare to the AF5000? Check out my Elf Bar AF5000 Vs Instafill 3500 Comparison Review, where I uncover which rechargeable disposable vape reigns supreme in head-to-head testing.

Instafill 3500 FAQs

Can you refill Instafill 3500?

Refilling your Instafill 3500 is a breeze with the accompanying refill container. Simply tilt the device upside down, press the gold button and allow the e-liquid to flow into the pod. However, once your 10ml refill container runs empty, it's important to dispose of it responsibly, as it cannot be refilled.

How long does an Instafill vape last?

As its name suggests, the Instafill 3500 lasts for approximately 3500 puffs. This impressive lifespan is more than five times longer than that of a regular disposable vape, offering an extended vaping experience without the need for frequent replacements.

Who should use Instafill 3500?

I would recommend the Instafill 3500 to all fans of disposable vapes. For those wanting to quit smoking and transition away from traditional cigarettes, the Instafill 3500 offers a mouth-to-lung vaping experience similar to smoking, making it a suitable option.

Additionally, its compact and rechargeable design makes it convenient for experienced vapers seeking a hassle-free backup device.

Instafill 3500 Verdict

As I wrap up my exploration of the Instafill 3500, I find myself both impressed and intrigued by this newcomer in the vaping realm. In an industry where innovation is key, Instafill steps up to the plate with its debut product, promising both convenience and longevity in a disposable vape.

From its design alone, it’s hard to believe that Instafill is a new brand, as this product oozes the same charm and build quality as more well-known devices. I’m glad that Instafill had the foresight to make their refill container transparent for easy monitoring of e-liquid levels, as it’s definitely something that sets them apart from their competitors.

When it comes to performance, the Instafill 3500 delivers in spades. The draw is smooth and satisfying, reminiscent of some of my favourite disposable vapes. I found the flavour to be exceptional, with intense notes that remain consistent throughout, even when the device is running low.

My main gripe with this Instafill vape is its battery life. And while it’s not awful, it did leave me wanting more. With a 500mAh battery, it offers a standard vaping session before needing a recharge, but a larger battery capacity and a battery life indicator would be welcome additions to any future Instafill devices.

While there's room for improvement in the battery department, its innovative approach to big puff disposable vapes sets it apart in a crowded market. For vapers seeking a longer-lasting alternative without sacrificing convenience, the Instafill 3500 disposable vape is undoubtedly worth considering.

Instafill at myCigara

At myCigara, we exist to make the UK smoke-free. We believe that offering customers viable alternatives, such as rechargeable vapes from Instafill, helps bring us that much closer to achieving our goal.

New to vaping? Dive into our comprehensive guide for beginners, covering all the basics to kickstart your vaping journey with confidence. Or, if you're ready to take the plunge into quitting smoking, our Basic Guide to Vaping provides essential information to support your transition.

We’re committed to ensuring every customer has the best possible vaping experience. If you have any questions, don't hesitate to reach out to us. You can also visit your nearest myCigara store, where our knowledgeable staff are ready to help you.


Instafill, Disposables


Instafill, Disposables


Jemma Wolfe

Lead Content Writer @myCigara

I'm Jemma, a writer and ex-smoker with a passion for vaping. Since ditching the cigs over a year ago, I've used a whole host of vaping products to help me stay smoke-free and live a healthier lifestyle.

Now, my goal is to help others along their quit smoking journey by writing expert reviews and providing vaping guidance. When I’m not writing, you can find me curled up with a good book, hanging out with my cats or watching live music.

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