Today we’re pleased to bring you another Innokin review, this time it’s on one of their latest releases, the Endura S1 Refillable Pod Kit.
Before we delve down into the review, we should point out that the Endura S1 comes in two different versions. The one we’re reviewing here is the standalone pod kit (device only), with the other option being a collaboration with Kingston Podbar Salts.
The specs of the Endura S1 are slightly different between the two options, such as coil resistance and charging current, despite looking exactly the same. The only visible difference is the Kingston option comes with 10ml flavored Nic Salts of your choice. I’m a little surprised why the specs are different as it doesn’t quite make sense to me!
As with most manufacturers, once they have success with a particular model, they will release different variants and upgrades within that series and Innokin are no exception. Within the Endura series of pods/mods the Endura S1 is the eighth different model, although strangely enough we’ve not reviewed any of these very popular devices.
The different devices in the Endura range, not including the new Endura S1 are:
- Apex
- M18
- T18
- T18 X
- T20 S
- T22 Kit
- T22 Pro
Although the other Endura devices listed above are pods/mods, the Endura S1 is a refillable non replaceable pod with an integrated non replaceable coil. This in effect makes this a disposable. When the integrated coil in the non-detachable pod no longer performs, the whole device is disposed of.
Innokin specify that the Endura S1 combines the convenience of a disposable, is designed to be refilled at least 15 times which equates to 30ml of e-liquid (up to 7000 puffs) making it far more cost effective when compared to a standard disposable. Not only this, the environmental impact is far less severe.
Overview of the Innokin Endura S1 Pod Kit
The Innokin Endura S1 pod kit is a non-adjustable 13.5W constant output power device. It’s designed as a Mouth to Lung (MTL), auto draw activated vape with a refillable pod. It also incorporates an internal 650mAh rechargeable battery.
Charging the Endura S1 is carried out using a standard Type-C charging cable. Unfortunately there isn’t one supplied with the device so you’ll have to use a spare you hopefully have lying around. The charging rate is specified as 550mAh so a power source of 1A will fully charge the device in approximately 90 minutes (1.5hrs).
It’s an open pod system meaning it’s a refillable (side fill) pod with a 2.0ml e-liquid capacity. The 0.8 ohm Mesh coil is an integral part of the pod so it’s not replaceable. The pod is also integrated into the Endura S1 body so that doesn’t detach either. When the coil degrades, the whole device is disposed of and a new one purchased.
Innokin state that the Endura S1 pod kit will last for a minimum 15 refills before the coil becomes exhausted. This equates to a minimum of 30ml of e-liquid passed through the pod which could provide up to 7000 puffs. We will put this to the test and see if it exceeds this figure!
Made out of lightweight polycarbonate and PCTG, the Endura S1 comes in 8 different colors. We received 2 of the different colors; Silver and Pearl which you will see in the photos throughout this review. Each of the colors has a satin metallic finish with the body on some of the color range being color graded (shaded dark to light).
3 of the colors; Charcoal, Graphite and Silver have a smoked black semi-opaque pod while the remaining colors; Pearl, Celadon, Cerulean, Iris and Blush have a completely clear (transparent) pod.
There is no adjustable airflow; instead it relies on one small pin hole on the base of the Endura S1 body positioned centrally above/below the USB Type-C charging port which provides a nice smooth restrictive MTL draw.
A small dual-colored LED on the bottom of the Endura S1 (outermost hole), next to the airflow intake hole (central hole), illuminates when you draw on the pod. It will also cycle when the device is being charged and will illuminate in a sequence of flashes indicating the battery requires recharging or when it’s displaying a safety prompt.
For reference, the spec changes between the two Endura S1 variants are:
| Specification | Endura S1 Stand Alone Device | Endura S1 With Kingston Pod Salts |
| Coil Resistance: | 0.8 ohm | 1.1 ohm |
| Charging Current: | 550mAh | 350mAh |
| Charging Status: | Cycling Red Then Static Green | Unknown |
I would like to thank Alisa at Innokin for sending us 2 Endura S1 pod kits for the purpose of this review. As always this review is completely unbiased and is my honest opinion based during my findings while using the Endura S1 pod kits supplied. We may receive a small affiliate fee if you click of any of the buy links but at no extra cost to you.
Innokin Endura S1 Pod Kit Review
Contents
- Overview of the Innokin Endura S1 Pod Kit
- Features and Specifications
- What’s in the Box?
- Innokin Endura S1 Pod Kit Design and Appearance
- Innokin Endura S1 Pod Kit Functionality
- Innokin Endura S1 Pod Kit Performance
- Innokin Endura S1 Pod Kit Battery Performance
- How do I Fill the Endura S1 Pod?
- How do I Charge the Endura S1 Pod Kit?
- Innokin Endura S1 Pod Kit Price
- Innokin Endura S1 Pod Kit Verdict
- Innokin Endura S1 Pod Kit Summary
Features and Specifications
- Dimensions: 101mm (Length) x 18.5mm (Diameter)
- Weight: Approximately 33 grams
- Construction: Polycarbonate / PCTG
- Charging: Type-C USB 5V/550mAh
- Charging Time: 90 Minutes (1.5hrs)
- Pass-through Vaping
- Output Wattage: 13.5W
- E-liquid Capacity: 2.0ml
- Pod Section: Refillable, Non-replaceable, 0.8 ohm Mesh Coil
- Filling Method: Side Fill Port
- Firing Method: Draw Activation
- Battery Specification: Internal 650mAh Rechargeable
- Display: Dual-Color Changing LED
- Airflow: Fixed Bottom Hole Intake
- Vape Cut-Off: 10 Seconds
- 8 Color Finishes
What’s in the Box?
- Innokin Endura S1 Refillable Pod Device
- Quick Guide
Note: There is no included charging cable so you will have to use one that you have to hand.
With all Innokin products now, and the Endura S1 is no exception, the packaging comes in 100% recyclable cardboard. Unlike most traditional cardboard boxes with a lift to open top flap, the Endura S1 has a little twist on the theme.
Instead of the top of the cardboard box opening, the two bottom side edges are stuck with removable white circular sticky tape. Once this tape is removed, the outer cardboard sleeve reveals two square cutouts allowing finger access to grasp the slide out inner cardboard tray.
This tray will slide completely out and houses the Endura S1 device which is simply removed from the front of the cardboard tray. Opening either the top or bottom lift out flap of the inner tray gives access to the Quick Guide pamphlet.
The overall dimensions of the packaging measures 134mm tall by 61mm wide by 25mm deep. As you can see from the photos, the two different colors we received (Silver and Pearl), both came in monochrome packaging with the shade depicting the color of the included device.
On the front of the box is an image of the Innokin Endura S1 refillable pod kit together with the color name. There are 3 small icons showing “Refillable”, “Mesh Coil” and “USB-C” and a statement saying “Up To 7000 Puffs” and “Works Best With 50% VG E-Liquid”. As with any TPD product, the large nicotine warning is always highly visible across the front of the package.
One side of the box highlights the same information that’s on the front, while the other side just shows “Innokin” with the manufactured date stamp underneath their logo. The reverse face of the box details the device name, package contents, the company address, bar code, an authentication label and additional nicotine and safety warnings.
Once you remove the Endura S1 from the inner tray, you will have to remove the transparent sticker that’s covering the air intake hole and USB-C charging port before you use it. DO make sure you fill the Endura S1 with your e-liquid and leave to stand for approximately 10-15 minutes before you first use the device.
Innokin Endura S1 Pod Kit Design and Appearance
As we’ve already mentioned, even though the device has a refillable pod so you can use the e-liquid of your choice, the pod and coil are not replaceable. Once the coil in the pod section is no longer useable, the whole device has to be thrown away (sensibly and correctly of course) and a new one purchased. Yes it’s a disposable.
Where the Endura S1 comes into its own is the simplicity of the device and the longevity of usage when compared to a standard disposable. The price tag of the Endura S1 is comparable with a disposable but the useful life far exceeds that of any standard disposable in the market place today.
The Innokin Endura S1 refillable pod kit delivers a fixed constant power output of 13.5W from its 650mAh capacity internal rechargeable battery and is auto draw activated only. Airflow is not variable but the small air intake hole on the base of the device, directly above the USB charging port provides a very smooth and very quiet restricted MTL draw.
Next to the central air intake hole towards the outer base edge of the Endura S1 is a similar hole which conceals a small dual-color changing LED. This LED illuminates when you draw on the mouthpiece in the color corresponding to the remaining charge left in the battery:
- Red LED:- Battery <15%
- Green LED:- Battery >15%
This LED also cycles when it’s placed on charge, changing color once full charge is achieved and shows the different levels of protection:
- Overtime Draw Protection (10 seconds): LED flickers Red 8 times
- Low Battery: LED flickers Red 10 times
- Fully Charged: LED turns static Green
Constructed out of Polycarbonate and PCTG, the body/battery is a tube shaped design with one flat side edge that aligns with the flat edge of the non-removable pod where the side fill port is. The mouthpiece (pod section) is attached to the Endura S1 body and is NOT removable. This is constructed out of either semi-opaque black or completely transparent PCTG material depending on which color body you choose.
The dimensions of the Endura S1 measure 101mm tall by 18.5mm in diameter and it weighs in at only 33 grams making this very compact and very lightweight. It feels solid and looks well built, having a completely smooth satin metallic surface finish. The battery/body part measures 18.5mm x 66mm and is very similar in size to an 18650 battery.
Charging the Endura S1 is carried out using your own charging cable as there isn’t one supplied in the kit. A standard Type-C to USB cable connected to the Type-C charging port on the bottom of the body, specified as 5V/550mAh, will charge the 650mAh battery in approximately 90 minutes. It does have pass-through so you can vape while it’s being charged.
The Endura S1 is auto draw activated so there is no fire button or on/off control. It outputs a fixed constant wattage (13.5W) so no adjustable wattage buttons either, it’s as simple as it comes designed to replicate the look and feel of a disposable with the added advantage the pod section is refillable.
Unfortunately we couldn’t find any information regarding any further safety features other than the standard operating ones such as:
- Overtime Protection (10 seconds)
- Low Battery Voltage Protection
- Over Charge Protection
There are 8 different smooth satin metallic body colors available in the Innokin Endura S1 range. 5 of them come with a clear transparent pod and the other 3 have a smoked black semi-opaque pod. We have identified below the color range and which ones have the different color pods:
- Charcoal – Black Pod
- Graphite – Black Pod
- Silver – Black Pod
- Pearl – Clear Pod
- Celadon – Clear Pod
- Cerulean – Clear Pod
- Iris – Clear Pod
- Blush – Clear Pod
The colors we received to test for this review were Pearl and Silver. Both of these colors are a single color with a very smooth metallic looking satin surface finish. Fortunately these two colors come with the clear and black pods so you can at least see the difference between the two.
Branding is reasonably discreet with “Endura S1” screen printed in smallish silver grey lettering on the flat side of the casing towards the bottom. The other side of the casing has the “Innokin” brand name in the same silver grey lettering. Etched into the base of the Endura S1 are the usual “CE” markings and “650mAh 2.40Wh”.
The base of the Endura S1 refillable pod is flat so there is no problem with standing this upright. Obviously the Type-C port is positioned on the base so you do have to lay this on its side while it’s being charged.
Now even though it’s a DISPOSABLE, the pod section is refillable. Having an e-liquid capacity of 2.0ml with an integral non-replaceable 0.8 ohm mesh coil, the pod is fixed to the battery/body so doesn’t remove making this a throw away device once the coil is finished.
As we’ve mentioned, the pod section comes in either completely clear or smoked black depending on the main body color you choose. It’s manufactured out of PCTG material with a duck bill shaped mouthpiece with a tapered oval opening at the top of the pod with a circular 3mm opening leading directly into the top of the coil. This provides the tight MTL draw.
The Endura S1 is a side fill design with the opening fill port concealed behind a flush fitting silicone rubber plug (white or black) which is always visible because the pod is not removable. This silicone plug has an arrow indent on it towards the top in the direction of the mouthpiece which dictates which end of the plug that opens.
When the plug is opened the other end of the silicone rubber flap will remain attached to the pod so it won’t get lost. You can see a small circle on the bottom of the silicone plug which is the rubber tag that fits in to the pod. This plug can be rotated out of the way when you are filling. The fill port hole is semi-oval in shape and a pretty decent size (4.8mm) allowing for most e-liquid tip bottles to be used.
I would recommend tilting the device on its side edge when filling so you can get the maximum amount of e-liquid inside. Once filled, make sure you resecure the rubber fill bung so e-liquid doesn’t escape.
Innokin state when using a 50% VG e-liquid, the pod/coil is good to last for at least 30ml of e-liquid so this equates to a minimum of 15 refills before the coil will start to show signs of degrading. They also mention that the puff count would be up to 7000 puffs but this does depend on the length of draw you take.
Once the pod has been filled with your e-liquid, reinsert the silicone rubber flap ensuring the fill port opening is completely sealed with the flap sitting flush against the pod casing.
Do ensure your e-liquid level in the pod doesn’t fall below 1/3rd full. Alternatively NEVER let if fall below the 4 small wicking ports towards the base of the coil. Failing to do this will destroy the coil and the whole device will have to be thrown away.
Innokin Endura S1 Pod Kit Functionality
Using the Innokin Endura S1 pod kit is very simple and straightforward. There are no menu options, no wattage adjustment, no airflow to fiddle with and no on/off button. You simply draw on the pod and enjoy your vaping experience.
The output wattage is fixed at a constant 13.5W and will remain at this power throughout the discharge cycle of the battery.
It’s been designed to replicate the simplicity and ease of use as that of a standard disposable with the inclusion of being rechargeable and refillable. As such, there is very little control or functionality other than the dual colored LED on the base of the Endura S1.
This LED will light up when you draw on the device with the color of the LED highlighting the remaining charge left in the battery. It will also flash to indicate overtime protection and low battery. When you place the Endura S1 on charge, the small dual-color LED will illuminate and slowly cycle on and off.
The color of the LED highlights the status of the battery/device as follows:
- Drawing on the pod – Green >15%, Red <15%
- Charging – Red LED cycles on and off
- Full charge – LED remains constant Green
- Low battery – LED flashes Red 10 times
- Overtime protection (10s) – Red LED flashes 8 times
When the Red LED flashes 10 times, the Endura S1 will no longer function and will require recharging. The Type-C USB charging current is 550mAh therefore from fully discharged to full charge will take 90 minutes.
Pass-through vaping is a feature on the Endura S1 so you can vape while it’s being charged.
Innokin Endura S1 Pod Kit Performance
As with most MTL vape pods, freebase or nicotine salts with a PG/VG ratio of 50/50 are recommended because of the smaller wicking ports and lower power. Innokin state on the front of the package that the Endura S1 works best using a 50PG/50VG mix. Using a high VG based e-liquid could potentially clog up the wicking ports in the coil leading to dry hits which in turn would damage the coil.
When first using a new Innokin Endura S1 refillable pod kit, I would recommend filling the pod with your e-liquid and leave it to stand for 10-15 minutes before using to allow the e-liquid to saturate into the wick before vaping. This will improve the longevity of the device before it needs replacing.
Having received 2 of the Innokin Endura S1 refillable pod devices, I ran one device with Cherry Cola at 3mg freebase nicotine and the other with Cream Soda using 20mg nicotine salts. Both e-liquids were 50PG/50VG as I didn’t want to damage the coil with a thicker e-liquid.
I wasn’t expecting great results but after my first few draws I really was surprised. The flavor of both e-liquids came through really well producing a crisp clean flavorsome vape with incredibly clear flavor tones. The amount of vapor was more than I expected too. The only observation was the 3mg freebase didn’t quite give me that nicotine kick. 6mg worked better and the Nic Salts worked perfectly.
The fixed non-adjustable airflow provided a really nice smooth and quiet, semi-restrictive MTL draw. I had no problems with it gurgling or spitting and I found it suited my longer draw style. If like me you rest the bottom of the device on your finger while vaping, it does block the air intake and stops you being able to draw on the pod.
Auto draw worked every time and was very responsive, even the slightest draw activated the Endura S1. The 13.5W fixed power in my opinion was about right and didn’t appear to tail off as the battery approached its low voltage cut-off. Innokin have got everything right with this design as the e-liquid in the pod lasts well between refills too.
Innokin’s website and the information on the packaging state that the Endura S1 is designed to be refilled at least 15 times, equating to 30ml of e-liquid, before the coil/pod loses its performance and has to be disposed of. While testing and writing this review, I’ve cycled over 60ml of e-liquid through the pod and I’ve not noticed any drop-off in flavor or vapor yet.
When comparing the Endura S1 against that of any single use disposable, the longevity and environmental impact, not forgetting the reduced costs make the Endura S1 a far more cost effective solution.
Innokin Endura S1 Pod Kit Battery Performance
The Endura S1 is powered by an internal 650mAh capacity rechargeable battery. This is about average considering it IS a disposable device. What is impressive though is the length of vape time you have between charges.
On average I was achieving around 14 hours of vaping from a fully charged battery which is really good. This time will vary depending on your vaping style i.e. duration and frequency of your draw.
During normal use, when you draw on the mouthpiece, the small dual-colored LED on the bottom of the Endura S1 will illuminate green. This dual-color LED will eventually change color to red as it approaches the low voltage battery cut-off. It will remain at red for approximately 30 minutes until the battery is discharged and the low voltage prompt is activated, the red LED will flash 10 times.
Once the LED flashes red 10 times, you will no longer be able to vape and will have to recharge the battery. The Endura S1 does have pass-through so you are able to vape while it’s being charged.
I didn’t notice any change in vape performance as the battery approached its low voltage cut-off so remained constant throughout the battery discharge cycle.
How Do I Fill The Innokin Endura S1 Pod Kit?
The Innokin Endura S1 refillable pod is a side fill design with the fill port concealed behind the white or black silicone rubber bung/plug. There is a small indented arrow on the rubber bung that donates which end of the rubber flap to pull open to gain access to the filling port. For reference, it’s the end towards the top of the mouthpiece.
This silicone rubber flap is attached to the pod by a small rubber peg so there’s no chance of it getting lost. Pull open the flap and insert your e-liquid drip tip into the opening. The rubber bung can be swivelled around if required to give easier access to the fill port hole.
Tilt the pod on its side to aid filling and to get the maximum amount of e-liquid into the pod. Once filled, reinsert the silicon rubber flap making sure the fill port is securely sealed.
Always make sure the e-liquid level is above the small wicking ports of the coil. Vaping when the e-liquid level is below 1/3rd full or below the wicking ports will cause dry hits/burns and damage the coil. Because the coil/pod is not replaceable, the device will become useless and have to be thrown away.
Quick Tip: If you are filling the pod for the first time, once filled, leave to stand for approx. 10-15 minutes before you start to vape. This will help saturate the wick fully in e-liquid and help prolong the life of the coil/device.
How do I Charge the Innokin Endura S1 Pod Kit?
When you first receive your Endura S1 it comes with a nominal charge. Before using for the first time we recommend fully charging the device.
During use, once the dual-colored LED starts flashing red 10 times, highlighting that the battery has reached its low battery cut-off, you will need to place the Endura S1 pod kit on charge.
The Endura S1 doesn’t come supplied with a Type-C charging cable so you will have to use one that you already have. Plug the cable into the Type-C USB port on the bottom of the Endura S1 and connect the other end into a suitable power source (typically 5V/1A or greater).
When the Endura S1 is first placed on charge the LED will glow red and cycle on and off. It will continue to cycle on and off throughout the charging process until it becomes fully charged. Once full charge is achieved, the LED will change color to green and remain illuminated. At this point, remove the power source and you’re ready to vape again.
Charging time takes approximately 90 minutes to fully charge the battery when using a 1A power source. Do note the Innokin Endura S1 does have a pass-through facility therefore you will be able to charge and vape at the same time but this will increase the overall charging time.
I did observe that while the Endura S1 pod kit was on charge, the case remained cool to the touch. I would however advise to always charge this, and any other device for that matter, on a non-flammable surface.
As always, NEVER leave your vape device unattended while on charge.
Innokin Endura S1 Pod Kit Price
Even though the Endura S1 is a disposable, because it’s refillable and you use your own e-liquid, the cost of using this type of device means it is far cheaper than a traditional disposable. Having the ability to recharge the battery and refill with e-liquid a minimum of 15 times before the coil/device is no longer usable is comparable to roughly 15 or more standard disposables, making this so much more cost effective.
The Endura S1 kit is new to market and as such has only just been released to retailers. Once we have a firm price for this kit we will edit this review with a buy button for your convenience.
I’m guessing the kit will retail for under £10/$10 making this a great alternative to a standard single use disposable.
Innokin Endura S1 Pod Kit Verdict
Pros
- Good design and build quality
- Small and lightweight
- Very good flavor and vapor
- Responsive draw activation
- Impressive in-built 0.8 ohm coil
- Good coil/device life
- Very good battery performance
- Refillable side-fill design
- Rechargeable
- 2.0ml E-liquid capacity
- Clear pod
- Pass-through function
Cons
- Limited device life
- Slow charge time (1.5hrs)
Innokin Endura S1 Pod Kit Summary
The Innokin Endura S1 pod kit is a little strange in that it’s a disposable yet it looks like a pod, performs like a pod and is refillable and rechargeable. It’s been designed to be as simplistic and easy to use as possible with the aim of challenging and providing a far more cost effective solution over a single use device.
Everything about it looks good and works very well. The flavor and vapor compare to most small pods in the market and the battery life is very good. Coil life is impressive and does exceed the recommended refill count. Auto draw was faultless and produced a really good vaping experience.
Compare this against most single use devices and the Endura S1 is untouchable. The fact it’s refillable and you can use any e-liquid you desire (so you’re not limited to the few flavors that a disposable has) makes this device quite unique.
I still struggle with single use and limited use devices especially around the increased costs over a pod or mod kit and more importantly the environmental impact that these device cause. Saying this, if I had to choose between the Endura S1 or a single use disposable I would pick the Endura S1 every time.
Hope you enjoyed this review and found it useful. If you have any questions or feedback, please feel free to leave us a comment below. Good and bad comments are always welcome.
If you do decide to purchase one, please let us know how you’re getting on with it.
We’ve reviewed many different Innokin Mods and Pods over the last few years so please do take a look at our Review page where you can see and read all of our in-depth reviews.