Generally, leakage from cartridges is caused by the settings being to high. The liquid becomes to viscous and leaks out of the cartridge. My favorite cleaner for anything involving wax or oil is Lemon Essential oil. A drop on a q-tip will remove the residue quickly. Try lowering the settings on the pen as well. All cartridges are different, but generally 3.5v is the highest temp for oil carts. Certain brands are also more prone to leakage, but I can almost always resolve the issue myself with a lower temp/voltage. 

Thank you for a great question! 

When you use the preheating function the battery will let you know it is preheating by cycling through the colored lights. The 400 battery goes through several heating cycles that last about 15sec each, and its up to personal preference when you decide to stop the preheating process (with another click of the button) and take your hit. 

As far as the second question; no, our batteries do not have an auto-off feature. Because they aren't discharging any power when the button isn't being pressed, keeping the battery on won't drain it any faster or slower than if it was off. To turn the battery on and off, pressing the button 5 times within 2 seconds will either turn it on or off. 

Please let us know if you have any further questions! 

The preheating function on the 400VV Rotate is activated with 3 clicks in 2 seconds. All of our other products are two clicks, so I apologize if that was mentioned previously. 

While preheating, the light behind the button should illuminate and change colors through out preheating. This pen preheats longer than all of our others and will continue until the button is pressed again. This makes it perfect for wax tanks so you can use the preheat and go right into the hit. 

5 clicks in 2 seconds will turn the device off completely. This function is great for your pocket or bags. However, the battery wont activate or draw power unless the button is pressed. Leaving the pen on but not in use will not drain the battery.

The preheating process takes about 15sec. After that it should be ready! 

I am sorry to hear about your issues with the device. An orange light typically means that it has a low battery. So to me it sounds as if it might be defective. Unfortunately this is not uncommon with the smaller devices. But we warranty our items for exactly this reason. Go and visit togoutlet.com and file a warranty claim for replacement. We can help you out!

Yes! That activates the power. 

It sounds to me like your battery is defective. This can happen sometimes. We as the manufacturer offer the ability to file a warranty claim. Visit TOGoutlet.com and click on support/Warranty. Our warranty team is usually back in contact within 1-2 business days

The voltage regualtor controls the amount of power moving from the battery to the cartridge. The higher the amount of power the larger amount of product will be moved through the cartridge. How long the battery lasts really depends on how heavy of a smoker you are and how frequently you are using the device. It can take up to 3 hours to charge depending on the outlet your using. 

Both the 350mAH and the 400mAH Rotate should only take a few hours to charge at most.

Yes. All of our tanks and batteries have a standard 510 thread.