M40 CBD Vape Pen | 400mAh | 4ml Large Capacity | Type-C | OEM & ODM

Most CBD disposables are designed around the assumption that the user will finish the device in a week and buy another. The M40 challenges that assumption: it holds 4ml of oil – twice the capacity of our standard pens – and pairs it with a 400mAh battery, the largest in our lineup. The result is a device that genuinely lasts, for the user who wants a full month of consistent use instead of a weekly purchase cycle.

Look at the economics of CBD consumption. A heavy user who finishes a 1ml pen every few days is making frequent trips to the store – or frequent online orders. A 4ml device changes that rhythm completely: one purchase covers weeks of use, at a better price per milliliter. For the brand, the M40 shifts the conversation from “try our pen” to “this is your daily driver,” which is a stronger positioning for retention. And because the M40 is a closed system, the user who commits to the format keeps coming back to your brand for refills.

A 4ml tank needs a battery that can keep up, and the M40 delivers with 400mAh – the biggest cell in our CBD lineup. The battery-to-liquid ratio is carefully balanced so that a full tank and a full charge run out around the same time. Users hate two failure modes: oil running out with battery left, or battery dying with oil still in the tank. The M40 avoids both.

The M40 offers 1.2Ω and 2.0Ω coils. The 1.2Ω runs warmer and produces more vapor – good for users who want a robust hit from a large device. The 2.0Ω is gentler and more efficient, stretching both the oil and the battery further. Your choice depends on the oil and the experience you want; we will test your formulation against both and give you a straight recommendation.

The M40 includes a 10-second preheat function, which matters more on a large-capacity device: the oil in a 4ml tank sits longer between uses, and preheat ensures the coil is ready even after the device has been idle for days. The transparent tank shows the oil level, and the slim 73mm profile keeps the big-capacity device pocketable.

At 42 x 14 x 73mm and 29.5g, the M40 is surprisingly light for its capacity – the 4ml of oil is the heaviest thing in the device. Six colorways are standard, with custom colors on body, mouthpiece and bottom cap. The body takes spray paint with UV finish.

Brands targeting daily, heavy CBD users – the people who would otherwise burn through multiple small disposables a month. Brands building a subscription or refill program. Brands in markets where a bigger device at a better price-per-ml is a clear competitive advantage. The M40 is the device for the user who has graduated past trial sizes and wants something that lasts.

We manufacture the M40 in our Dongguan factory, operating since 2013, ISO 9001/14001/45001 certified. Request samples and let us pair the right coil to your oil.

A 400mAh cell sounds abstract on a spec sheet, so here is what it means in practice: for a typical user taking moderate draws through the day, the M40 comfortably lasts a full day of use between charges, and Type-C charging tops it up quickly when it does run low. For a heavy user, the battery and the 4ml tank are sized to deplete together, so you rarely hit the frustrating state of a dead battery with oil still in the tank. If your market skews toward all-day users – people who treat CBD as a daily ritual rather than an occasional treat – the M40 is the device that matches their consumption pattern instead of fighting it.

Hardware only – we manufacture devices, not e-liquids or cannabis oil. Buyers are responsible for compliance with local regulations for the filled product.