Description
The Smyle Labs Car Key Penjamin is a 510 cartridge battery designed to look like a real car key fob, for anyone who wants a cart battery that blends in with their keys. A magnetic adapter holds the cartridge inside, and it offers three temperature settings, a preheat mode and USB-C charging.
How the Car Key Penjamin Works
The cartridge drops inside the key body instead of screwing onto the top. Twist the gold magnet adapter onto your cartridge, drop it in, and the magnet keeps it snug. The unlock symbol works as the fire button, and a longer top piece fits larger cartridges.
Car Key Penjamin Specs
| Type | 510 cartridge battery, car key design |
| Cartridge fit | Most 0.5g and 1g cartridges |
| Connection | Gold magnetic adapter |
| Temperature | 3 adjustable settings |
| Preheat | Yes, 2 clicks |
| Charging | USB-C, about 15 to 30 minutes |
What’s in the Box
- Car Key Penjamin
- Gold magnetic adapter
- USB-C charging cable
How to Use the Car Key Penjamin
- Remove the top part of the car key.
- Twist the gold magnet adapter onto the bottom of your cartridge.
- Drop the cartridge inside and replace the top piece. Use the longer top piece if needed.
- Press the unlock symbol five times quickly to turn it on.
- Click three times to choose a temperature, or twice to preheat.
Care and Cleaning
Charge with the included USB-C cable for 15 to 30 minutes, and do not leave it charging unattended. Wipe the body with a dry cloth, and keep the top piece on when it is in your pocket.
Car Key Penjamin FAQ
What is the Car Key Penjamin?
A Smyle Labs 510 battery shaped like a car key fob.
How do I turn it on?
Press the unlock symbol five times quickly.
What cartridges fit?
Most 0.5g and 1g cartridges.
How long does it take to charge?
About 15 to 30 minutes by USB-C.
Do I screw the cartridge in?
No. The magnetic adapter holds it in place.
Every Car Key Penjamin is 100% Authentic from top brand names, with free US shipping on orders over $49.99 to adults 21+. Shop more 510 thread batteries or see all Smyle Labs batteries.









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