Whole Melt carts are among the most searched products in the brand’s range, and for good reason: they pack a lot of flavor and variety into a pocket-sized device. But the naming can be confusing. If you’ve seen Phase 4, Phase 5, Phase 6, V7 or “2G disposable” and weren’t sure what separates them, this guide explains Whole Melt carts from the ground up, so you can buy with confidence.
Table of Contents
Key takeaways
- A dual chamber cart holds two oils in one device, switchable while you vape.
- “Phase” and “V” numbers are generations of the line, not different product types.
- A 2G disposable holds roughly twice the oil of a standard 1G cart.
- Buy from the official shop and verify your product before use.
What are Whole Melt carts?
A cart (short for cartridge) is a small tank pre-filled with cannabis oil that attaches to a battery, usually a standard 510-thread battery. A disposable is the same idea with the battery and charging built in, so you use it and recycle it when the oil runs out. Whole Melt carts come in both formats, in single-flavor and dual chamber versions, which you can browse in the Whole Melt carts category. That flexibility is a big part of why the line is popular: there is an option whether you already own a battery or want a grab-and-go device.
What’s inside a Whole Melt cart?
The quality of any cart comes down to two things: the oil and the hardware. Whole Melt’s vape line centers on flavorful oils paired with coil-and-wick hardware designed for smooth, consistent draws. Because formulations and flavors rotate regularly, the individual product page is where you will always find the exact details for the item you are looking at, including size and flavor. Reading that page before you buy is the single best habit for getting exactly what you want.
What is a dual chamber cart?
A dual chamber device keeps two separate oils apart inside one unit, with a switch or selector that lets you choose which side you are drawing from. The result is one device that carries two flavors or two strains. People choose dual chamber carts for variety, for pairing complementary flavors, or for keeping a daytime and an evening profile in the same device without carrying two separate carts. It is one of the features that makes the Whole Melt line stand out.
Whole Melt carts: generations at a glance
The “Phase” and “V” labels refer to generations of the dual chamber and disposable line, not to different product categories. As a rule of thumb, newer generations refine the hardware and expand the flavor range.
| Line | Examples | Format | Known for |
|---|---|---|---|
| Phase 4 | Phase 4 Dual Chamber, Phase 4 2G Disposable | Dual chamber + disposable | Two flavors in one device |
| Phase 5 | Phase 5, Phase Five V2 | Dual chamber | Refined hardware |
| Phase 6 | Phase 6 Dual Chamber | Dual chamber | Most recent Phase generation |
| V5 / V6 | V5, V6 disposables | Single-flavor disposable | Simple grab-and-go |
| V7 | V7 Dual Chamber | Dual chamber | Latest “V” dual chamber |
Because line-ups change over time, treat the product page as the single source of truth for what a given device includes today.
Single vs dual chamber: which to choose
Both formats have their place. The quick comparison below helps you decide which Whole Melt carts suit you.
| Feature | Single chamber | Dual chamber |
|---|---|---|
| Flavors per device | One | Two |
| Best for | A consistent, simple experience | Variety and pairing profiles |
| Ease of use | Very simple | Simple, with a selector to switch |
Flavors and strains
Whole Melt carts span a wide flavor range, from fruit and candy-style profiles to classic strain names, and dual chamber devices pair two of these together. Flavor availability rotates, so the best way to see what is in stock right now is to browse the carts category directly rather than relying on an older list.
How to use your Whole Melt carts
- Charge first. If it is a disposable or a battery, make sure it is charged before the first use.
- Prime it. Take one or two gentle, short draws without firing (or at the lowest setting) so the oil saturates the coil.
- Start with small puffs. A 2 to 3 second draw is plenty to begin, because the oil is concentrated.
- Wait. Give the effects a few minutes to arrive before taking more.
- Switch chambers (dual chamber only) using the selector when you want the other flavor.
Battery care and charging
Good battery habits keep any cart performing well. Use the charger that came with your device, avoid leaving it charging unattended overnight, and don’t let a disposable sit fully drained for long periods. Keep the battery contacts clean, and store the device at room temperature. Overheating a battery, or using an incompatible charger, is a common cause of poor performance and should be avoided.
Troubleshooting common issues
- Weak or no vapor: the battery may be low, or the oil may be cold. Warm the device in your hand and try a slightly longer draw.
- Clogging: take slower, gentler puffs, and store the device upright.
- Harsh taste: you may be drawing too hard or using too high a setting. Ease off.
- Leaking: keep the device upright and avoid leaving it in a hot car.
How to choose Whole Melt carts
- Single or dual chamber? Choose dual chamber for two flavors in one device.
- Cart or disposable? A cart needs a compatible 510 battery; a disposable is ready out of the box.
- Size? A 2G disposable lasts longer than a 1G cart.
- Check the listing for the current price, flavor and availability.
Where to buy Whole Melt carts
The most reliable way to get genuine Whole Melt carts is to buy directly from the official shop, so the product, code and packaging all come from the source. Before you buy, it is worth learning how to verify authentic Whole Melt Extracts, and reviewing cannabis laws and safe storage for where you live. If you prefer a dab-style concentrate instead of a cart, our live resin sugar guide is a good next read.
Frequently asked questions
What is a Whole Melt dual chamber cart?
A dual chamber device holds two separate oils in one cart or disposable, so you can switch between two flavors or strains. Each listing shows the exact flavors and size.
What is the difference between Phase 4, 5, 6 and V7?
They are different generations of the Whole Melt dual chamber and disposable line. Newer versions generally refine the hardware and expand flavors.
How long does a 2G disposable last?
A 2-gram disposable holds roughly twice the oil of a 1-gram cart, so it lasts longer, but exact life depends on puff length and frequency.
Do Whole Melt carts need a special battery?
Standard carts use a common 510-thread battery. Disposables have the battery built in.
Where should I buy Whole Melt carts?
Buy from the official Whole Melt Extracts shop, so the product, code and packaging all come from the source.
About the author. Jeremy Goldner is a cannabis concentrates writer and the content lead at Whole Melt Extracts. He writes practical, hype-free guides on carts, live resin and hash rosin to help adults 21+ make informed choices, with a focus on accuracy and responsible use. Last reviewed: October 2026. This article is general information only and is not medical or legal advice. Cannabis laws vary by location, so follow the rules where you live.
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