Smyle Labs Lip Balm (chapstick) Cart Pen Battery

Smyle Lip Balm Cart Battery: A 510 Battery in a Balm Tube, With Cart Storage

A cart battery is easy to recognize. A tube of lip balm isn't. Smyle Labs built this 510 battery inside a capped balm tube, then added a second matching tube to hold the cart, so the whole kit looks like something people carry every day.

It's about as simple as cart batteries get. Screw on a cart, inhale, and it fires at a fixed 3.3V. That makes it a good everyday battery for standard carts with free-flowing oil and a weaker fit for thick oil that wants preheat (more on that below). We stock it next to the Penjamin Car Key because the two solve the same problem in different shapes.

Why the Lip Balm Battery Stands Out

It looks like lip balm between sessions. Cap the battery tube, tuck the cart into the storage tube, and you're holding two lip balms. The cart shows while you use it, so the look is about carrying it.

Nothing to press. It's draw-activated. There's no five-click routine and nothing to fire by accident in a pocket.

More battery than you'd guess. It holds 400mAh, more than most of the palm-size batteries we carry, and the fixed 3.3V output keeps the power draw moderate.

Lip Balm Battery Specifications

How to Use the Lip Balm Battery

Give it a full charge with a USB-C cable before the first use. Pull the cap, screw a 510 cart onto the top (snug, not tight) and inhale slowly. There's nothing to click. When you're done, unscrew the cart, drop it into the storage tube and cap both tubes.

Pro Tip: Keep draws to about three seconds. Long, hard pulls can flood or overheat the coil and make the next hit taste burnt.

Who It's For

It suits cart users who want something low-key in a pocket or bag, and anyone who'd rather skip buttons and click patterns entirely. It isn't the right pick for thick oil or carts that need preheat. For those, we'd point you to the Penjamin Car Key, which has three voltages and a preheat cycle in a disguised shell.

Care and Cleaning

Every week or two, wipe the 510 threads on the battery and the base of your cart with a cotton swab and a little isopropyl alcohol, then let them dry. Keep the port cover on when you're not charging (it's what keeps pocket lint out of the port).

Warning: It really does look like lip balm, so keep it away from kids and store it apart from your real lip balm. Don't charge it with a damaged cable, and keep it out of hot cars.

Common Questions

What voltage does this battery run at?

It fires at a fixed 3.3V, according to the maker. There's no button and no voltage menu, so every draw runs at the same level. That suits standard carts with free-flowing oil. Thick oil that needs preheat or a higher setting will do better on a button battery with settings.

How does it fire without a button?

The battery is draw-activated, so it fires when you inhale through the cart. There's nothing to click and nothing to press by accident in a pocket. Take slow, steady draws of about three seconds, and let it rest a moment between pulls so the coil can cool.

Which carts fit the battery and the storage tube?

Most 0.5g and 1g 510 carts fit the battery, and the storage tube holds 0.5g and 1g carts. Larger carts still thread onto the top; they just stick out further. The two foam inserts in the box help keep a stored cart from rattling around in its tube.

Does it really look like lip balm?

Between sessions, with the caps on and the cart stored, it looks like two ordinary lip balm tubes. While you're using it, the cart sits on top of the battery tube and shows. So the look holds up best in a pocket or bag, not while it's in your hand.

How do I charge it?

It charges through a USB-C port on the bottom of the battery tube, hidden under a small cover. A charging cable isn't listed in the box, so plan on using a USB-C cable you already own. We'd keep the cover on between charges to keep pocket lint out of the port.

What comes in the box?

The box has the lip balm battery and a matching storage tube. It also includes two long and two short top caps for different cart sizes, two foam inserts and a charging port cover. Carts aren't included. Both color sets, Blue/Black and Red/Pink, come with the same parts.

How long does a charge last?

The battery holds 400mAh, which is more than many palm-size cart batteries. Because it fires at a fixed 3.3V, it draws less power per puff than a battery set near 4V. Charge it when draws start to feel weak, and avoid running it completely flat every time.

Complete Your Setup

See the Penjamin Car Key if you want voltage settings and preheat in a disguised battery, or compare everything in our 510 batteries and vapes collection. Our 510 battery guide explains how voltage changes flavor. Questions? Send us a note through our contact page.