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Smyle Labs Penjamin Car Key 510 cart battery

Penjamin Car Key battery clipped on keychain

Penjamin Car Key gold magnet cart adapter

Penjamin Car Key included accessories USB-C

Smyle Labs Penjamin, Car Key 510-Thread Variable Voltage Battery

Name: Smyle Labs Penjamin, Car Key 510-Thread Variable Voltage Battery
Brand: Smyle Labs
Price: 24.99 USD
Availability: InStock

Smyle Labs

$24.99

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A Car-Key-Disguised 510 Cart Battery That Clips to Your Keychain

Smyle Labs Penjamin Car Key is a car-key-disguised 510-thread cart battery engineered to look exactly like a standard key fob while functioning as a discreet vape battery with preheat and three adjustable temperature settings. The disguise is the whole point: it clips onto your keychain with the included ring and hides your cartridge in plain sight, so it blends in among everyday keys rather than reading as a vape device. Available in three colorways, Black, Silver, and White, it pairs that stealth shape with a distinctive magnetic cart system. Instead of threading a cart on the outside, you twist the included gold magnet adapter onto your cartridge and drop it inside the key body, where the magnet holds it snug. Removable top pieces, including an optional longer cap, keep different cart sizes fully concealed.

Penjamin Car Key targets discreet daily-carry users who want a 510 cart battery indistinguishable from the keys already in their pocket, ideal for anyone who wants their setup hidden in plain sight rather than tucked away. The car-key shape differs from Smyle Labs' Penjamin Pen and Marker sister products in form and carry: where the pen and marker sit among desk supplies, the key fob lives on your keychain for grab-and-go access anywhere you take your keys. It is built for standard 0.5g and 1g cartridges, making it the right pick for everyday cart sizes carried discreetly. Pair your Penjamin Car Key with cartridges from our THC carts collection for compatible 510-thread oil options.

Three adjustable temperature settings let you tune vapor output to your cart's oil viscosity, with a lower setting for thinner distillate carts that vaporize easily and a higher setting for thicker live resin or rosin carts that need more heat. The preheat function warms the cart oil before activation, smoothing out the harsh first-hit experience common with cold 510 batteries on thicker concentrates. USB-C charging keeps the device topped up with a modern, fast, reversible connection, recharging in roughly 15 to 30 minutes, and most users report about a week of use per charge. The magnetic adapter system means no fiddly threading inside the body, just drop and go. Browse our broader disposables collection as an alternative for users who prefer pre-filled options over refillable cart batteries.

Smyle Labs Penjamin Car Key Features

✔ Form factor: car-key-disguised 510 cart battery (looks like a real key fob)
✔ Carry: clips onto your keychain with the included ring
✔ Magnetic cart system: gold magnet adapter holds the cart inside, no threading
✔ Cartridge compatibility: standard 0.5g and 1g 510-thread carts
✔ Temperature: 3 adjustable settings (matched to cart viscosity)
✔ Preheat: quick preheat function for thicker concentrates
✔ Charging: USB-C port, roughly 15–30 minute charge
✔ Battery life: about one week of use per charge (typical)
✔ Optional longer top piece for taller carts
✔ Available colorways: Black, Silver, White (3 options)

What's Inside the Penjamin Car Key Box

✔ 1x Penjamin Car Key cart battery device (color of your choice)
✔ 2x gold magnet cart adapters
✔ 1x long top piece (optional, for taller carts)
✔ 1x keychain ring
✔ 1x USB-C charging cable
✔ 510-thread cartridge sold separately and not included

Operating Instructions

Remove the top piece of the car key, then twist the included gold magnet adapter onto the bottom of your 510-thread cartridge. Drop the cartridge inside the key body; the magnet holds it in place with no threading required, and you replace the top piece, using the longer top piece if your cart needs extra clearance. Press the fire button five times rapidly to turn the device on or off, the standard vape safety protocol that prevents accidental firing in a pocket. Double-click to activate preheat for thicker concentrate carts, and press three times rapidly to cycle through the three temperature settings. Press and hold while drawing through the mouthpiece. Recharge via the USB-C port for about 15 to 30 minutes, and do not leave it charging unattended.

Car-Key 510 Cart Battery for Discreet Everyday Carry

Smyle Labs Penjamin Car Key serves three distinct buyers within the discreet cart battery category. Keychain carriers get a 510 battery that lives right on their keyring and disappears among everyday keys, hidden in plain sight wherever they go. Standard-cart users who run 0.5g and 1g cartridges get a simple magnetic drop-in system with no threading to fuss with. And daily-carry users who want grab-and-go discretion get a key fob they already reach for out of habit, now doing double duty. The three-color choice, Black, Silver, and White, keeps the disguise clean. Penjamin Car Key pairs naturally with the Penjamin Pen and Marker sister products for users who want a disguise option across different everyday objects.

What is the Smyle Labs Penjamin Car Key? +

The Smyle Labs Penjamin Car Key is a car-key-disguised 510-thread vape battery engineered to look like a real key fob while functioning as a discreet cart battery with preheat and three adjustable temperature settings. Its defining feature is the disguise combined with keychain carry: it clips onto your keyring with the included ring, hiding your cartridge in plain sight among your everyday keys. It comes in three colorways, Black, Silver, and White, and uses a distinctive magnetic cart system, where a gold magnet adapter twists onto your cartridge so it drops inside the key body and stays held by the magnet rather than being threaded. The device works with standard 0.5g and 1g 510-thread cartridges and charges via USB-C. It is built for daily-carry users who want a cart battery that looks like something they already carry, blending into a keyring rather than reading as a vape.

How does the magnetic cart adapter work? +

The Penjamin Car Key uses a gold magnet adapter that twists onto the bottom of your 510-thread cartridge, after which the cartridge simply drops inside the key body and is held securely in place by magnetic connection, with no threading into the device required. This is different from most cart batteries, where you screw the cartridge directly into a 510 connection. With the magnetic system, you attach the small adapter to your cart once, then it snaps in and out of the device easily, which makes swapping carts faster and avoids cross-threading or over-tightening. The device includes two gold magnet adapters, so you can keep one attached to a cart you use regularly or have a spare on hand. When seated inside with the top piece replaced, the cart stays snug and concealed. If you switch carts often, the magnetic drop-in design is noticeably more convenient than repeatedly threading and unthreading.

What size carts fit in the Penjamin Car Key? +

The Penjamin Car Key is designed for standard 0.5g and 1g 510-thread cartridges, which covers the large majority of carts on the market. This is different from the larger Penjamin Marker, which accommodates oversized carts up to 4g; the Car Key is optimized for the common everyday cart sizes rather than bulky ones, keeping the key fob compact and convincing. As long as your cartridge uses the standard 510-thread connection and falls within typical 0.5g or 1g dimensions, it should fit inside the body once the gold magnet adapter is attached. For carts on the taller side, an optional longer top piece is included to provide extra clearance while still concealing the cart. If you specifically run large 2g, 3g, or 4g cartridges, the Car Key is not the ideal fit and the Marker model would suit those better, but for standard carts the Car Key handles them cleanly.

Does the Penjamin Car Key actually look like a real key fob? +

Yes, the Penjamin Car Key is designed to closely resemble a standard car key fob, which is the entire purpose of the device, allowing it to hide in plain sight on your keychain. To a casual observer, it reads as just another key among your keys rather than a vape battery, which is what makes it discreet in public settings. The realistic key-fob shape means it does not draw the attention that an obvious vape pen would, and clipping it onto your keyring with the included ring reinforces the disguise by placing it exactly where a real key would be. The fire button is integrated into the design rather than appearing as an obvious vape button. This convincing appearance is the core appeal: it lets you carry your cart battery openly, mixed in with items you already hold, instead of concealing it separately. The disguise works best when it is genuinely on your keyring as intended.

How long does the battery last on the Penjamin Car Key? +

Most users report getting about a week of use per charge from the Penjamin Car Key, though your actual battery life depends on how frequently and how long you use it. Lighter, occasional users will stretch a single charge further, while heavy daily users will need to recharge more often. Because it is a compact key-fob-sized device, its battery is sized to balance discretion with reasonable longevity rather than to match a large dedicated battery. When the charge runs low, the device recharges relatively quickly via USB-C, in roughly 15 to 30 minutes. To maximize each charge, use the lower temperature settings when your cart allows, since higher heat draws more power, and turn the device off with five clicks when not in use rather than leaving it on. Keeping it charged is easy given the short recharge time and the universal USB-C cable it uses.

How do I charge the Penjamin Car Key? +

The Penjamin Car Key charges via a USB-C port using the included USB-C cable, and a full top-up typically takes only about 15 to 30 minutes. Plug the cable into the device's charging port and connect the other end to any standard USB power source, such as a computer, wall adapter, power bank, or car charger. USB-C is the modern, reversible standard, so the plug goes in either way and you can use almost any quality USB-C cable you already own as a backup. One important safety note from the manufacturer: do not leave the device charging unattended. Because the recharge time is short, you generally do not need to leave it plugged in for long anyway. Charging it for that brief window gives you roughly a week of typical use, so a quick top-up here and there keeps it ready. Avoid letting moisture into the USB-C port, and use a quality cable for safe, reliable charging.

What do the three temperature settings do? +

The Penjamin Car Key offers three adjustable temperature settings, cycled by pressing the fire button three times rapidly, that let you match heat output to your cartridge's oil viscosity. The lowest setting suits thinner distillate carts, producing clean vapor without harshness while preserving flavor and conserving battery. The middle setting works as a balanced everyday default for most standard carts, giving good vapor density across common oil types. The highest setting is intended for thicker concentrates like live resin or rosin that need more heat to vaporize fully, producing denser output, though it can scorch delicate flavors in thin distillates if overused. A good habit is to start a new cart on the lowest setting and step up only if vapor seems weak. Pairing the right temperature with the preheat function gives the smoothest results, especially on thicker oils that benefit from gradual warming before you draw.

Is the Penjamin Car Key compatible with any 510 cartridge? +

The Penjamin Car Key works with most standard 510-thread cartridges in the common 0.5g and 1g sizes, using the included gold magnet adapter rather than direct threading. Compatible cart types include THC distillate carts, THCA carts, Delta-8 carts, CBD carts, live resin carts, live rosin carts, and HHC carts, as long as they use the standard 510-thread connection and fit the device's size range. The magnet adapter attaches to the cart's 510 base, then the cart drops into the body, so compatibility comes down to standard threading and physical dimensions. Cartridges with proprietary, non-510 connections, such as certain closed pod systems, are not compatible since they require their own dedicated hardware. Very large or unusually shaped carts may not fit the compact key-fob body, which is optimized for everyday 0.5g and 1g sizes. For standard cartridges, the magnetic system makes loading quick and tool-free.

Will the metal car key body interfere with my actual car key fob? +

The Penjamin Car Key is a standalone cart battery that resembles a key fob, but it is not a functioning car remote and will not interfere with your real car's key fob or its signal. It is a disguise device, meaning it mimics the appearance of a key fob without containing any car-remote electronics that could conflict with your vehicle. You can clip it onto the same keyring as your genuine car key without worry, which is exactly how it is meant to be carried for maximum discretion. Because it contains a small battery and electronics for vaping rather than for vehicle communication, it operates entirely independently of your car. The only practical consideration is keychain bulk, since you are adding another fob-sized item to your keys, but it does not affect your real key's locking, unlocking, or proximity functions in any way. It simply rides along on the keyring as a convincing lookalike.

How do I store and care for the Penjamin Car Key? +

Store the Penjamin Car Key in a cool, dry place away from direct heat and sunlight, and keep the top piece on to protect the seated cartridge and mouthpiece. Because it rides on a keychain, it will see everyday handling, so periodically wipe the exterior with a lightly damp cloth, avoiding the USB-C port, to keep the disguise clean and convincing. For maintenance, occasionally clean the magnetic connection point and the gold magnet adapter with a dry cotton swab to clear any oil residue that could weaken the magnetic contact or affect performance. Do not submerge the device in water or let moisture into the charging port. If a cart leaks, detach the magnet adapter and clean both it and the contact area before reloading. Keeping a spare magnet adapter handy, since two are included, means you always have a clean one ready. Storing it upright when not on your keys helps prevent any oil from migrating toward the connection.

How is the Car Key different from the Penjamin Pen and Marker? +

All three are Smyle Labs disguised 510-thread cart batteries, but they differ in disguise, carry style, cart capacity, and loading. The Car Key looks like a key fob, clips onto your keychain, fits standard 0.5g and 1g carts, and uses a magnetic drop-in adapter, making it ideal for grab-and-go keyring carry. The Penjamin Pen looks like a slim writing pen for standard carts and threads directly, suiting desk and pocket carry. The Penjamin Marker looks like a permanent marker, writes like one with included tips, and crucially fits much larger carts up to 4g inside its wider body. So the choice comes down to how you carry and what carts you run: pick the Car Key for keychain discretion with standard carts and tool-free magnetic loading, the Pen for the slimmest profile, or the Marker for oversized carts. Each disguises the device as a different everyday object to match different environments.

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Smyle Labs Penjamin, Car Key 510-Thread Variable Voltage Battery

A Car-Key-Disguised 510 Cart Battery That Clips to Your Keychain

Smyle Labs Penjamin Car Key Features

What's Inside the Penjamin Car Key Box

Operating Instructions

Car-Key 510 Cart Battery for Discreet Everyday Carry

Write a Review

Smyle Labs

Smyle Labs Penjamin, Car Key 510-Thread Variable Voltage Battery

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