Vibrator Mayhem!

Okay so I bought this cute little bullet literally today. I'm purely a stimulation person so I really don't need much. It's an Ovo product with like a 15 year warranty, so you'd think it get the job done. Well..... It literally dies after 2 minutes! I can't return it and the warranty requires me to ship it to Germany! I'm totally bummed. And I have tried everything I can think of! New batteries, foil, ect. It still dies so fast! Does anyone know any tricks?