how to turn on a lost thc pen

How to Turn On a THC Vape Pen

If you’ve found or forgotten how to use a THC vape pen, the first thing to know is that not all pens turn on the same way. Most problems come down to the type of pen you have.

Step 1: Figure Out What Type of Pen It Is

1. Button-Activated Vape Pen

This is the most common type.

How to turn it on:

Press the power button 5 times quickly
A light usually flashes to confirm it’s on

To use it:

Press and hold the button while inhaling

To turn it off:

Press the button 5 times again

If nothing happens:

It may be dead
The button could be stuck
The battery could be faulty

2. Draw-Activated (No Button)

Some pens don’t have a button at all.

How to turn it on:

You don’t — it turns on automatically when you inhale

If it doesn’t work:

The battery may be dead
The airflow sensor may be clogged
The cartridge might not be connected properly

3. Disposable THC Pen

If it’s a disposable:

There is usually no power button
You just inhale

If it doesn’t work:

It may be empty
The battery may be dead
The device may be blocked or faulty

Disposables often stop working suddenly with no warning.

Step 2: Check the Battery

Common signs it needs charging:

No light when pressing the button
Blinking light when trying to use it
Weak or no vapour

What to do:

Charge it with the correct charger
Clean the charging port gently
Try a different cable if nothing happens

If it still won’t turn on after charging, the battery is likely dead.

Step 3: Check the Cartridge Connection

Sometimes the pen won’t turn on because:

The cartridge isn’t screwed in properly
The metal contacts are dirty

Try this:

Unscrew the cartridge
Wipe the contacts with a dry tissue or cotton bud
Screw it back on gently (don’t overtighten)

Step 4: Look for Safety Lock or Faults

Some pens won’t activate if:

They’ve overheated
They’re short-circuiting
The button is damaged

Signs of a faulty pen:

Random flashing
Heating without vapour
No response at all

If that’s the case, it’s usually not fixable.

If It Still Won’t Turn On

Realistically, one of these is true:

The battery is dead
The pen is disposable and empty
The internal electronics have failed

At that point, replacing the device is the only option.

Important UK Note

In the UK, THC is illegal unless prescribed, so possession of a THC vape may carry legal risk. This guide explains the device mechanics only.

Bottom Line

Most THC pens turn on with 5 quick button presses, or they activate when you inhale. If it won’t turn on after charging and cleaning, it’s probably dead or disposable.