Overview
The Yocan UNI 3.0 represents the latest evolution of one of the most popular 510 cartridge batteries in the industry. Building on the success of its predecessors, the UNI 3.0 introduces a digital display with animated backgrounds, precise voltage adjustments, and the same universally compatible adjustable cartridge chamber that made the UNI series famous.
Designed for users who want complete control over their vaping experience, the UNI 3.0 accommodates virtually any 510-threaded cartridge through its innovative adjustable width and height mechanism. Whether you prefer low-temperature flavor sessions or high-voltage clouds, the UNI 3.0's variable voltage system from 1.8V to 4.2V has you covered.
Design & Build Quality
The Yocan UNI 3.0 maintains the compact box mod form factor that defined the series while introducing meaningful refinements. The device fits comfortably in hand and easily slides into a pocket, making it an excellent everyday carry option.
Build Construction
The outer shell features a durable finish available in twelve color options, including standard solid colors (Black, White, Light Blue, Rosy, Green, Rose Gold, Violet) and eye-catching spatter editions (Black-Red, Black-White, Purple-Black, Teal-Black) plus a Full Color variant. The spatter editions command a $10 premium at $50, which seems reasonable for the upgraded aesthetic.
Digital Display
The most noticeable upgrade from previous UNI models is the digital display panel. This screen provides real-time information including:
- Current voltage setting
- Battery level indicator
- Ohms reader for cartridge resistance
- Puff counter to track usage
- Charging status indicator
The display offers three selectable animated backgrounds: Classic, Planet, and Shiny Cat. While some users may prefer a more minimalist approach, others will appreciate the personality these animations add to the device.
Adjustable Cartridge Chamber
The signature feature of the UNI series remains the adjustable cartridge chamber. The dial on the bottom adjusts the width to accommodate cartridges of varying diameters, while the height can be adjusted to keep your cartridge fully concealed or partially exposed based on preference. This hidden chamber design provides discreet, pocket-friendly carrying.
Portability Features
A built-in hanging hole allows lanyard attachment for convenient carry options, particularly useful for events or situations where pocket storage isn't ideal.
Features
Variable Voltage Control
The UNI 3.0 offers precision voltage control ranging from 1.8V to 4.2V, adjusted through dedicated plus (+) and minus (-) buttons. This granular control allows you to fine-tune your experience for any cartridge:
| Voltage Range | Best For |
|---|---|
| 1.8V - 2.4V | Maximum flavor, thin oils |
| 2.5V - 3.2V | Balanced flavor and vapor |
| 3.3V - 3.8V | Increased vapor production |
| 3.9V - 4.2V | Maximum vapor, thick oils |
Ohms Reader
The built-in ohms reader displays your cartridge's resistance, helping you understand how much power your cartridge requires and ensuring optimal performance. This feature is particularly useful when trying new cartridges.
Puff Counter
Track your usage with the integrated puff counter. This feature helps monitor consumption and can be useful for those who want to pace their sessions throughout the day.
Universal 510 Compatibility
The adjustable chamber mechanism ensures compatibility with virtually all 510-threaded cartridges regardless of diameter or height. This universal approach means you'll never need to worry about whether a new cartridge will fit.
Performance
Vapor Production
The UNI 3.0 delivers consistent, reliable vapor production across its entire voltage range. The lower voltage settings (1.8V-2.4V) preserve terpenes and deliver excellent flavor, while higher settings produce denser clouds for those who prefer visible vapor.
The device heats quickly with minimal delay between pressing the fire button and vapor production. The consistent power delivery means no weak hits or inconsistent performance throughout the session.
Battery Performance
The 650mAh battery provides solid performance for moderate users, typically lasting a full day with regular use. Heavy users may need to charge mid-day, but the USB-C fast charging capability minimizes downtime. A quick 20-30 minute charge can provide several hours of additional use.
The battery indicator on the display provides accurate real-time status, so you're never caught off guard by a dead battery.
Cartridge Compatibility
During testing, the UNI 3.0 accommodated every cartridge we tried, from slim CCELL-style carts to wider ceramic cartridges. The adjustable height feature proved particularly useful for taller cartridges, keeping them fully concealed and protected.
Pros & Cons
Pros
- Universal Fit: Adjustable width and height mechanism fits virtually any 510 cartridge
- Precise Control: Variable voltage from 1.8V to 4.2V with digital precision
- Informative Display: Real-time voltage, battery, resistance, and puff count data
- Fast Charging: USB-C enables quick battery top-ups
- Great Value: Exceptional features at the $40 price point
- Color Variety: Twelve color options including special spatter editions
Cons
- Battery Size: 650mAh may require daily charging for heavy users
- No Pass-Through: Cannot use while charging
- Display Style: Animated backgrounds aren't for everyone
Verdict
The Yocan UNI 3.0 represents the gold standard for 510 cartridge batteries in its price range. The combination of universal cartridge compatibility, precise voltage control, and an informative digital display creates a compelling package that's hard to beat at $40.
For first-time box mod buyers, the UNI 3.0 is an excellent entry point that offers room to grow without needing to upgrade. Experienced users will appreciate the precision voltage control and the peace of mind that comes with knowing any cartridge will fit.
The only users who might want to look elsewhere are those who need all-day battery life without charging or those who prefer an ultra-minimalist design without a digital display. For everyone else, the Yocan UNI 3.0 is an easy recommendation.
Related: Yocan UNI 3.0 Manual