What Are Carts? A Beginner’s Guide

Carts, short for cartridges, are mini compact containers pre-filled with cannabis oil and are designed for vaping. Carts can’t work on their own; they need a vape pen (the power source) to function.

THC carts are beloved for being discreet and easy to use. Their compact design is suitable for on-the-go consumption without the strong odor associated with smoking. Plus, you can always swap carts of different strains and potency levels. 

Many people who consume cannabis prefer vape carts for a smooth, hassle-free experience.

If you’ve been searching “what are carts?” you’re likely trying to understand what they are, how they work, and why they’ve become so popular. But beyond that, knowing how to identify quality, lab-tested carts versus fake or unsafe ones is just as important, especially with the rise of counterfeit products on the market.

Let’s answer your questions and more as you keep reading. 

What Is a Cart Vape? 

A cart vape (same thing as a vape cart) is a small, often cylindrical container that comes pre-filled with cannabis oil. It is designed for use with a vape device (such as vape pens). 

There are two main types of carts: disposable and reusable.

Disposable carts are designed for single use. Once the oil in the cart is depleted, you discard the entire unit. 

Reusable carts, on the other hand, can be refilled with cannabis oil. This makes them a more cost-effective and eco-friendly option. 

People love carts vape because they’re portable, odor-friendly, and mess-free. They’re perfect for quick hits on the go, whether you’re out with friends or relaxing at home, or if you need a discreet way to consume cannabis.

Carts also allow for controlled dosing. Unlike smoking flower, where potency can vary, carts offer consistent THC, CBD levels per puff. This makes it easier to find your sweet spot without the risk of overdoing it.

What Does a Cart Look Like? 

A cart looks like a miniature test tube or a sleek pen cap. It is typically made of a glass or plastic tank that holds cannabis oil or e-liquid. 

One end features a mouthpiece, similar in shape to a whistle tip, where the user inhales the THC vapor. The opposite end has a metal connector with a thread that allows it to be screwed into a compatible battery. Threads connect vape batteries and carts, and there are several types, but the “510 thread” is the industry standard for vape carts. With this, you can easily switch between different batteries hassle-free. 

This table breaks down the parts of a cart and their unique functions:

Part	Description
Tank (Reservoir)	A glass or plastic chamber that holds cannabis oil or e-liquid, typically 0.5mL to 1mL in capacity. High-quality tanks use borosilicate glass for purity.
Mouthpiece (Drip-tip)	The top part where the user inhales vapor from.
Heating Element (Atomizer or Coil)	A coil, usually made of metal or ceramic, that provides even heating and flavor.
Airflow Chamber	A chamber that regulates air circulation and also prevents clogging.
Thread connector	A metal connector at the bottom of the cart that screws into a compatible battery.

Carts also come in different sizes:

• Half-Gram (0.5g): A compact 500mg size option, great for occasional users.
• Full-Gram (1g): Contains 1,000mg of oil, offering a longer-lasting option for frequent users.
• Larger Carts (2g+): Some brands offer higher-capacity carts for extended use and more sessions.

For those looking for powerful effects and convenience, The Hemp Doctor’s Kayo 2g 510-threaded vape cartridge stands out with its six strain options, 2-gram capacity, and 510-thread universal connector feature.  

510 Thread vs. eGo Thread

The 510 thread and eGo thread are two common types of connections used in vape batteries and cartridges.

510 Thread

This is the industry standard for vape batteries and cartridges. It features a fine, screw-like threading that allows for easy compatibility across a wide range of vape devices. 

Most modern vape pens, including those for THC, CBD, and nicotine e-liquids, use 510 threading due to its universal design and ease of switching between cartridges.

eGo Thread

This older threading system was widely used in early vape pens, especially for e-liquid vaping. Unlike the 510 thread, eGo batteries have both an external eGo thread and an internal 510 thread, making them compatible with specific eGo-style atomizers as well as some 510-threaded tanks. However, eGo-threaded devices are bulkier and have largely been replaced by 510-threaded options.

While eGo threading was once popular, 510 threading is now the preferred standard for its broader compatibility, sleeker design, and ease of use.

What Are Carts Made Of?

A cart’s tank is either made of plastic or glass. They will also have a heating element that could be made from different types of metals such as stainless steel, nickel, titanium, or chrome. Plus a wick, made from cotton or ceramic.

Glass Carts

The top choice for a clean and pure hit, glass doesn’t mess with the oil’s flavor or potency. However, it is brittle and can easily break. 

Plastic Carts

Cheap and lightweight, but not great for high-end oils. Some plastics can break down over time or release chemicals when heated.

What Materials Are Vape Coils Made From?

Vape coils go by many names—you might hear them referred to as coils, atomizers, atomizer heads, or attys, among others. The most common materials used in vape coils include:

Kanthal (FeCrAl Alloy)

Kanthal is known for its durability, affordability, and consistent heating properties. 

Nichrome (NiCr Alloy)

A blend of nickel and chromium, Nichrome heats up faster than Kanthal. It provides a slightly different resistance profile and a popular choice for sub-ohm vaping. However, it has a lower melting point, so it must be handled carefully at high temperatures.

Stainless Steel (SS316, SS317, SS304)

Stainless steel is versatile, as it can be used in both wattage mode and temperature control mode. It heats quickly and offers a clean, crisp flavor profile while being resistant to oxidation.

Nickel (Ni200)

Pure nickel wire is primarily used in temperature control (TC) mode due to its low resistance and high sensitivity to changing temperatures. However, some vapers avoid it due to potential health concerns when it is overheated.

Titanium (Ti)

Another material used for temperature control vaping, titanium offers precise temperature regulation.  It has to be carefully monitored to avoid overheating, which can release harmful byproducts.

Most carts have other metal parts, like connectors. High-quality ones use stainless steel or medical-grade metals, while low-end carts might contain toxic heavy metals like lead.

The Vape Oil 

Here is a breakdown of what is in a cart’s vape oil:

The type of oil in a vape cart makes a big difference in how the cart smoke hits, tastes, and feels. Here are the three main types:

Distillate Carts

Super strong, often 80%+ THC, but not much flavor since most terpenes are stripped out. Some have added flavors to make up for this.

Live Resin Carts

Made from fresh-frozen weed, keeping all the natural flavors and smells. Hits more like the actual strain.

Rosin Carts

No solvents, just heat and pressure. Full of natural terpenes and cannabinoids from the cannabis plant. It offers a smooth, rich taste and a more balanced high. It’s not as strong as distillate, but it’s way cleaner.

This table breaks down the key differences between distillate, live resin, and rosin, comparing their strength, flavor, extraction process, and overall experience.

Type	Potency	Flavor	Effects	Extraction Method
Distillate	Very High (80-95% THC)	Light or artificial	Strong but lacks depth	Solvent-based refinement
Live Resin	Medium-High (60-80% THC)	Bold, strain-specific	Full-spectrum with full entourage benefits	Fresh-frozen extraction
Rosin	Medium (50-70% THC)	Rich, natural	Smooth, well-rounded	Heat and pressure (solventless)

How Do Vape Carts Work? 

You just picked up a new vape cart and are excited to try it out. You screw it onto your battery, take a big inhale, and nothing happens. Or worse, you get a burnt taste that makes you cough like crazy. Frustrating, right? 

Using a vape cart properly can make all the difference between a smooth, flavorful hit and a wasted experience. Here’s a step-by-step guide to using a vape cart. 

Step 1: Attach the Cart Properly

Screw the cartridge onto a 510-thread battery. Avoid over-tightening to prevent damage. For magnetic adapter batteries, attach the adapter to the cart and drop it in.

Step 2: Activation

Press the button several times (the number of times depends on the product’s manual) in rapid succession to turn on a button-activated battery. For draw-activated vapes, simply inhale to activate.

Step 3: Adjust Heat Settings (If Available)

• Use low heat (2.5V–3.3V) for smoother, more flavorful hits.
• Use higher heat (3.5V+) for stronger clouds, but beware of burning the oil.
• If the cart tastes burnt, lower the heat setting.

Step 4: Inhale the Right Way

Take a slow, steady pull for about 3–5 seconds. Avoid short, sharp puffs (can clog the cart) or deep, aggressive inhales (can cause coughing).

Step 5: Wait Before Taking Another Hit

Pause for a few seconds to let the effects settle before deciding if you need another pull.

What Types of Carts Are There? 

Here’s a quick breakdown of the types of vape carts and who they’re best suited for.

1️⃣ 510-Thread Cartridges (Most Common)

What They Are: Standard screw-on carts that fit most vape batteries.

Best For: Users who want the flexibility to swap between different brands and strains.

2️⃣ Proprietary Pod Systems (Brand-Specific)

What They Are: Pre-filled pods that only work with a specific battery (e.g., Pax Pods).

Best For: People who prefer a sleek, tech-forward device with precise dosing.

Weed Cart Sizes & How Long They Last 

Vape carts come in different sizes, and how long they last depends on how often and how much you vape. Here’s a quick guide to help you choose the right size for your needs.

Common Cart Sizes:

0.5g (Half-Gram) – Holds about 100-150 puffs. Ideal for occasional users or those trying a new strain.

1g (Full-Gram) – Holds about 200-300 puffs. The most popular size and great for regular vapers.

2g (Double-Gram) – Holds 400-600 puffs. Best for heavy users who want long-lasting value.

Pros and Cons of Vape Carts 

Vape carts offer a discreet, convenient way to consume cannabis, but they’re not perfect. Here’s a quick look at their advantages and drawbacks.

How to Spot a Real vs. Fake Cart in Seconds

Spot a fake vape cart in seconds: 

Check the oil—real carts have clear, golden, thick oil, while fake ones appear dark, watery, or murky. Also, verify the packaging—legit carts have a QR code linking to lab results, while fakes often lack one or have cheap, unsealed packaging.

Here is a checklist to help you identify a fake cart.

Weed Cart Lingos to Use and Understand 

Vape culture comes with its own slang, and knowing these terms will help you sound like a pro. 

Here are some common ones:

• Blinkers – Taking a long hit (usually until the battery blinks) for maximum effects. Example: “I hit a blinker, and now I’m stuck to the couch.”
• Hotboxing – Smoking or vaping in an enclosed space to trap the vapor. Example: “Let’s hotbox the car before the concert.”
• Head Change – The instant shift in mindset after a strong hit. Example: “That live resin gave me a crazy head change.”
• Couch Lock – When you get so relaxed and sedated from a hit that you feel stuck to the couch. Example: “Took a fat rip and got couch-locked for a minute.”

Where Are Carts Legal? 

As of February 2025, the legality of vape cartridges in the United States varies by state, primarily based on the source of THC: marijuana-derived or hemp-derived.

States Permitting Marijuana-Derived Vape Cartridges:

In these states, both recreational and medical use of marijuana is legal, allowing the sale and use of marijuana-derived vape cartridges:

• Alaska
• Arizona
• California
• Colorado
• Connecticut
• Delaware
• Illinois
• Maine
• Maryland
• Massachusetts
• Michigan
• Minnesota
• Missouri
• Montana
• Nevada
• New Jersey
• New Mexico
• New York
• Ohio
• Oregon
• Rhode Island
• Vermont
• Virginia
• Washington

States Permitting Only Hemp-Derived Vape Cartridges:

These states have not legalized marijuana for recreational use but allow hemp-derived products, including vape cartridges containing less than 0.3% Delta-9 THC:

• Alabama
• Arkansas
• Florida
• Georgia
• Hawaii
• Indiana
• Idaho
• Iowa
• Kansas
• Kentucky
• Louisiana
• Mississippi
• Nebraska
• New Hampshire
• Oklahoma
• North Carolina
• South Carolina
• North Dakota
• South Dakota
• Tennessee
• Texas
• Utah
• West Virginia
• Wisconsin
• Wyoming

States with Specific Restrictions or Prohibitions:

Some states have specific regulations or bans concerning certain hemp-derived cannabinoids, such as Delta-8 THC:

• California
• Colorado
• New York
• Oregon
• Washington

It’s important to note that laws are subject to change, and some states may have specific laws regarding the sale and use of THC products. For the most updated information, consult with official state resources or legal counsel.

(Sources: Marijuana Legality by State – Updated January 1, 2025 | DISA and Mapping Hemp Products’ Legal Status Across US States)

Here is a map showing the legality of vape carts by state.

Vape Cart Legality By State In A Map

Find the Perfect Vape Cart for You – Shop Now!

Ready to explore high-quality, lab-tested weed carts? Whether you’re looking for potency, flavor, or convenience, The Hemp Doctor has a wide selection of premium carts to cater to your specific needs. Don’t settle for anything less than the best—shop our THC vape cartridges today! 

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