Universal Fit, Digital Control – The Yocan UNI 4.0 Universal 510 Battery builds on Yocan's popular UNI platform with extensive cartridge compatibility, digital controls, and a clear-view design that keeps the fitted cartridge visible during use. Its adjustable cartridge chamber allows the UNI 4.0 to accommodate a wide variety of 510-thread cartridges, making it a versatile option for users who regularly switch between different cartridge shapes and sizes. With a 1.26" TFT display, precise 1.8–4.2V voltage adjustment, and a 650mAh battery, it delivers dependable, customisable performance in a compact, protective body.

Key Features:

Universal Cartridge Compatibility
The adjustable cartridge chamber accommodates cartridges with a diameter between 8mm and 14mm, while cartridge height can be adjusted by more than 42mm. Supplied magnetic adapters allow a wide range of compatible 510 cartridges to be securely fitted.
Clear-View Cartridge Design
The open cartridge section provides improved visibility of the fitted cartridge, making it easier to monitor contents without removal – while retaining the protective benefits of the UNI-style body. (Cartridge not included.)
Adjustable Voltage (1.8V–4.2V)
Precise voltage adjustment in 0.1V increments allows users to fine-tune performance. Lower settings provide gentler output; higher settings increase power and vapour production.
1.26" TFT Display
Clearly displays current voltage, remaining battery level, puff count, and preheat status for easy at-a-glance monitoring.
10-Second Preheat Function
Operates at 1.8V, gently warming the fitted cartridge before use – helping prepare thicker liquids without immediately applying full power.
650mAh Rechargeable Battery
Dependable everyday power in a compact, portable form, with convenient USB Type-C charging.
15-Second Safety Cut-Off
Helps prevent prolonged continuous activation for safer use.
Compact & Portable Design
Approx. 28mm body width keeps the device easy to carry.

Perfect For:

Vapers who regularly switch between different 510 cartridge shapes and sizes.
Users wanting precise voltage control and a clear digital display.
Those who value preheat functionality for thicker liquids.
Anyone seeking a compact, protective, and versatile 510 battery.

Tech Specs:

Specification	Details
Brand	Yocan
Model	UNI 4.0
Product Type	Universal 510 Battery
Battery Capacity	650mAh (Built-in)
Connection	510 Thread
Cartridge Diameter Compatibility	8–14mm
Cartridge Height Adjustment	Over 42mm
Voltage Range	1.8V – 4.2V
Voltage Adjustment	0.1V Increments
Display	1.26" TFT
Preheat	10 Seconds at 1.8V
Charging	USB Type-C
Safety Cut-Off	15 Seconds
Body Width	Approx. 28mm

What's in the Box:

1 x Yocan UNI 4.0 Device
2 x Magnetic Adapters
1 x USB Type-C Cable
1 x User Manual

Yocan UNI 4.0 Universal 510 Battery – Where universal cartridge compatibility, digital precision, and clear-view convenience combine for a versatile, reliable, and customisable everyday 510 battery.

Yocan Uni 4.0 Universal 650mAh Battery Mod