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Review Summary

4.3/5

The Smyle Car Key 510 Battery is one of the most discreet 510-thread vape batteries on the market. Designed to look like a standard key fob, it blends seamlessly with your keychain while offering solid performance. With three voltage settings, a preheat function, and USB-C charging, this car key 510 battery is an excellent choice for vapers who prioritize stealth and portability. At $35, it’s a reasonably priced, stylish, and functional option for on-the-go vaping.

Pricing Info

Store
Coupon
MSRP: $35

Comparison

Car Key 510 Battery
Cartisan EVO 510 Battery
Randy's Inspo XL
Yocan UNI 3.0
Score (1-5)
4.3
Current Review
4.8
4.7
4.7
Brand Smyle Cartisan Randy's Yocan
Retail Price
$35.00
$45.00
$39.00
$50.00
Release Date February 2024 November 2024
Compatible With 510 Carts Concentrates, 510 Carts 510 Carts 510 Carts
Body Material Plastic Plastic Plastic Plastic
Mouthpiece Material Plastic Plastic
Heat Up Time 10 Seconds 5 Seconds 5 Seconds
Precise Temp Control
Temperature Range 3 Levels 6 Levels 2 Levels 1.8V - 4.2V
510 Thread
Coil Type Quartz Rods Sand Quartz Atomizer
Glass Compatible
Battery Type Internal Fully-Concealed Fully-Concealed Internal
Battery Capacity 1000mAh 650mAh
Sessions Per Charge 9-12 9-12 12-15
Charge Time 1-2 Hours 1-2 Hours
Charger Type USB-C USB-C USB-C
Passthrough Charging
Display Type LED LCD LCD
Smartphone App
Firmware Updates
Session Mode
Adjustable Airflow
Warranty 30 Days 90 Days 30 Days 30 Days

Background

Smyle Labs is known for creating high-quality and innovative 510 batteries, with an emphasis on discretion. Some popular releases are the Penjamin which is an actual writing pen 510 battery, or the 510 battery permanent marker.

The Car Key is part of their push toward stealth vaping, appealing to users who want to enjoy their sessions without drawing attention. But this battery is not only stealthy, it is also functioning pretty well. I've went through 2-3 carts in mine with zero issues, plus the thing was a conversation started everywhere I went.

It retails for $35 from VGEAR and you can use coupon code VG10 for 10% off.

Design & Build Quality

The Cary Key 510 Battery is slightly larger than the real thing, but is otherwise identical and can easily pass as a fob. Unlike other vaporizers that have cart sticking out, this battery completely hides it inside the body.

  • Ultra-Discreet Design: The 510 battery disguised as a car key is nearly indistinguishable from an actual key fob, making it one of the most discreet vape options available.
  • Compact & Lightweight: Easily clips onto your keychain for effortless portability.
  • Durable Build: Constructed from high-quality plastic and metal components, ensuring longevity.
  • Available in Multiple Colors: Black, silver, and white finishes allow users to choose a style that suits them.

Features

  • 510-Thread Compatibility: Works with 0.5g and 1g cartridges, making it versatile for most oil carts.
  • Three Voltage Settings: Adjust the power output by clicking the button three times:
    • Low
    • Medium
    • High
  • Preheat Function: Two clicks activate the preheat mode, ideal for thick oils or cold-weather use.
  • USB-C Charging: Charges in 15–30 minutes, significantly faster than micro-USB alternatives.
  • Magnetic Connection: Uses a gold magnet adapter for easy cartridge swapping.

How to Use the Smyle Car Key 510 Battery

  1. Remove the top cover of the key fob.
  2. Attach the included gold magnet adapter to the bottom of your 510-thread cartridge.
  3. Drop the cartridge into the slot—the magnetic adapter holds it in place.
  4. Put the top cover back on.
  5. Turn the device on by pressing the unlock button five times quickly.
  6. Adjust the voltage by clicking three times.
  7. Activate preheat mode by clicking two times.
  8. Inhale and enjoy!

Compatibility

  • Supports standard 510-thread cartridges (0.5g and 1g).
  • Not compatible with oversized or irregularly shaped carts.

Performance & Quality

  • Smooth Vapor Production: The three voltage settings allow for a customized experience, from light and flavorful hits to dense clouds.
  • Reliable Battery Life: The battery lasts about a day of moderate use on a full charge.
  • Consistent Heating: Even at the lowest setting, the Smyle Car Key Battery delivers a steady and even heat.

About the author:

Aaron Woods is the visionary behind VapeGuy, with a deep-rooted passion for vaping culture and technology. Starting his journey in the early days of vaporizer innovation, Aaron has dedicated over a decade to exploring and reviewing the latest in vaping tech. His expertise spans from dry herb to concentrate vaporizers, always aiming to provide the most authentic and insightful reviews. When not dissecting the next cutting-edge vape, Aaron is an advocate for responsible vaping and education within the community, ensuring enthusiasts are informed and equipped with the best tools for their journey.