Yocan Uni 4.0 Adjustable 510 Battery
The Yocan Uni 4.0 is the newest device in the Uni family, and the Uni family exists to solve one problem: cartridges are not all the same size. The chamber adjusts for diameter up to 14 mm and for height, so a wide or tall cartridge that will not sit flush on a standard battery is simply not an issue. Two magnetic 510 adapters are included, so cartridges clip in and out rather than being screwed on and off each time.
Beyond the fit, this is the most controllable battery in the Yocan range. Variable voltage runs from 1.8V to 4.2V and a real-time display shows exactly where you are set, rather than leaving you to read a colour-coded button. A clear-view window lets you keep an eye on cartridge level, there is a 10-second preheat at 1.8V for thicker oil or cold weather, and the device shuts itself down after an hour if you forget it.
Key Features
- Variable voltage, 1.8V to 4.2V
- Real-time display showing current settings
- Adjustable cartridge chamber, up to 14 mm diameter
- Adjustable cartridge height
- Magnetic 510 thread adapter system
- Clear-view design to monitor cartridge level
- 10-second preheat function at 1.8V
- Automatic shut-down after 1 hour
- USB Type-C charging
- [BATTERY CAPACITY — confirm with wholesaler]
What’s in the Box
- 1 x Yocan Uni 4.0 device
- 2 x magnetic 510 thread adapters
- 1 x USB Type-C charging cable
- 1 x instruction manual
Which Uni is right for you?
All three adjust for cartridge diameter and height and all three use the magnetic 510 adapter system, so the choice comes down to control and display.
| Uni Pro | Uni 3.0 | Uni 4.0 | |
|---|---|---|---|
| Voltage range | 2.0V–4.2V | 1.8V–4.2V | 1.8V–4.2V |
| Adjustment | 0.1V increments | Variable | Variable |
| Display | OLED | Animated OLED | Real-time display |
| Cartridge window | Oil level window | — | Clear-view design |
| Adapters included | 1 | 1 | 2 |
| Max diameter | 14 mm | 14 mm | 14 mm |
The Uni Pro is the long-standing model and the only one adjusting in fixed 0.1V steps. The 3.0 and 4.0 both reach a lower 1.8V, which gives you a gentler starting point. The 4.0 adds the clear-view window and a second adapter.
Compatibility
Suitable 510-thread cartridges, including wider and taller cartridges that will not fit a fixed-thread battery. If you use more than one type of cartridge, the Uni family is the safest choice in the range.
For guidance on voltage, charging and troubleshooting, see our 510 thread batteries page. Always follow the directions supplied with your prescribed product, and call us on 1300 420 965 if you are unsure which battery suits what you are using.
