THEVAPERSGUIDE

Yocan UNI 3.0 Plus Manual: Setup, Usage & Troubleshooting: Complete Setup & Usage Guide

Complete Yocan UNI 3.0 Plus user guide with step-by-step setup instructions, voltage settings, troubleshooting tips, and maintenance advice.

By The Vaper's Guide Team
(Updated January 6, 2026)
UNI 3.0 Plus

Yocan

UNI 3.0 Plus User Manual

Quick Start Guide

  1. 1Fully charge the battery using USB-C cable
  2. 2Attach cartridge to magnetic 510 adapter
  3. 3Insert adapter and adjust width to secure cartridge
  4. 4Power on with 5 rapid clicks
  5. 5Set voltage using +/- buttons
  6. 6Press fire button and inhale

Overview

The Yocan UNI 3.0 Plus is a premium 510 box mod featuring a large 1100mAh battery, adjustable width mechanism for universal cartridge compatibility, and an HD animated display with built-in games. This comprehensive guide covers everything you need to know to get the most from your device.

What's in the Box

  • Yocan UNI 3.0 Plus Box Mod
  • Magnetic 510-Threaded Adapter
  • USB Type-C Charging Cable
  • User Manual

Getting Started

Initial Charge

Before first use, fully charge your device:

  1. Connect the USB-C cable to the device
  2. Plug into a USB power source
  3. Display shows charging status
  4. Full charge takes approximately 1-2 hours
  5. Disconnect when fully charged

Powering On/Off

  • Turn On: Press the fire button 5 times rapidly
  • Turn Off: Press the fire button 5 times rapidly
  • Display activates when powered on

Attaching a Cartridge

  1. Screw your 510 cartridge onto the magnetic adapter
  2. Insert the adapter into the device slot
  3. Slide the width adjuster to secure the cartridge
  4. Ensure snug fit without over-tightening

Adjustable Width System

How It Works

The signature UNI feature:

  • Slide mechanism expands or contracts
  • Accommodates slim to wide cartridges
  • Provides secure grip on any diameter
  • Protects cartridges from damage

Proper Adjustment

  1. Insert cartridge with adapter
  2. Slide width adjuster toward cartridge
  3. Stop when cartridge is snug
  4. Avoid excessive pressure

Voltage Control

Adjusting Voltage

  1. Power on device
  2. Use + button to increase voltage
  3. Use - button to decrease voltage
  4. Watch display for real-time updates

Voltage Guide

SettingExperienceBest For
LowLight, flavorfulFlavor chasers
MediumBalancedDaily use
HighBigger cloudsCloud production
MaxMaximum powerThick oils

Finding Your Setting

  1. Start at a lower voltage
  2. Take a small puff
  3. Assess flavor and vapor
  4. Gradually increase if desired
  5. Note your preferred number

HD Display Features

Display Information

The screen shows:

  • Current voltage level
  • Battery percentage
  • Active display theme
  • Animation effects

Display Themes

Customize your visual experience:

ThemeStyle
ClassicClean, minimal design
PlanetSpace-themed animations
Shiny CatPlayful cat graphics

Changing Themes

  1. Access settings menu
  2. Navigate to display options
  3. Select preferred theme
  4. Theme applies immediately

Built-In Games

Available Games

  • Tetris: Classic block puzzle game
  • Evadex: Reaction-based challenge

Playing Games

  1. Enter game mode from menu
  2. Select desired game
  3. Use device buttons to play
  4. Exit anytime to return to vaping

Battery Management

1100mAh Capacity

The large battery provides:

  • All-day use for most vapers
  • 200-400+ puffs per charge
  • Extended sessions without worry
  • Weekend trips without charging

Charging Tips

  • Use the included USB-C cable
  • Any USB-C cable works in a pinch
  • Avoid third-party fast chargers
  • Don't leave charging overnight
  • Store at partial charge for extended storage

Battery Indicators

  • Display shows percentage
  • Low battery warning appears
  • Charge when below 20%

Care & Maintenance

Cleaning the Device

  • Wipe exterior with soft, dry cloth
  • Clean display gently
  • Avoid liquids near charging port
  • Don't submerge in water

Cleaning the Connection

  1. Remove cartridge and adapter
  2. Use dry cotton swab on contacts
  3. Clean adapter threads
  4. Ensure no debris in slot
  5. Reassemble

Storage

  • Store in cool, dry place
  • Keep away from extreme temperatures
  • Use lanyard hole for secure carrying
  • Protect display from scratches

Safety Information

General Safety

  • Adult use only (21+)
  • Keep away from children and pets
  • Do not modify the device
  • Use only compatible 510 cartridges
  • Stop use if device malfunctions

Battery Safety

  • Use only the included or compatible USB-C cables
  • Do not expose to extreme heat or cold
  • Do not puncture or damage the battery
  • Charge on non-flammable surface
  • Unplug when fully charged

Usage Safety

  • Do not use with damaged cartridges
  • Avoid chain vaping (allow cooling)
  • Do not exceed maximum voltage for your cartridge
  • Stop if you notice unusual tastes or smells

Specifications Summary

SpecificationValue
Battery1100mAh
Connection510 (magnetic)
DisplayHD animated
ChargingUSB Type-C
MaterialZinc alloy
WidthAdjustable
Themes3 options
Games2 built-in

Warranty Information

Contact Yocan directly for warranty claims and support. Keep your proof of purchase for warranty service.

Related: Yocan UNI 3.0 Plus Review

Troubleshooting

Q:Device won't turn on

A:Ensure battery is charged. Click the power button 5 times rapidly within 2 seconds. Check that the button isn't stuck.

Q:Cartridge not recognized

A:Check that the magnetic adapter is properly connected. Clean the 510 connection points. Ensure cartridge is securely attached to adapter.

Q:No vapor production

A:Verify cartridge has oil remaining. Check cartridge connection. Try increasing voltage. Ensure device is powered on.

Q:Display not working

A:Charge the device fully. Try powering off and on again. If display remains blank, contact Yocan support.

Q:Cartridge won't fit

A:Adjust the width mechanism by sliding to expand. The UNI 3.0 Plus fits virtually all 510 cartridges.

Q:Battery draining quickly

A:Higher voltage settings use more power. Games and display use some battery. Normal for heavy use - the 1100mAh still provides excellent life.

Specifications
Battery Capacity1100mAh
Threading510 (magnetic adapter)
DisplayHD animated screen
Voltage ControlAdjustable (+/- buttons)
ChargingUSB Type-C
Cartridge WidthAdjustable (universal)
MaterialZinc alloy
Display ThemesClassic, Planet, Shiny Cat
Built-in GamesTetris, Evadex

Frequently Asked Questions

What cartridges are compatible?

Any standard 510-threaded cartridge works with the UNI 3.0 Plus. The adjustable width mechanism accommodates cartridges of all diameters.

How do I change display themes?

Access the settings menu and choose from Classic, Planet, or Shiny Cat themes. Each offers different animated graphics.

How do I play the built-in games?

Navigate to the game mode in the menu. Select Tetris or Evadex and use the device buttons to play.

What's the voltage range?

The UNI 3.0 Plus offers adjustable voltage using +/- buttons. Start low and increase until you find your preferred setting.

How long does charging take?

USB-C fast charging typically completes a full charge in 1-2 hours depending on current battery level.

Can I use the device while charging?

It's recommended to avoid vaping while charging for safety and battery longevity.