09 So, what kind of testing did this new supercharger go through, while we were there, we saw more than a few pulls on the dyno, and in a nutshell; in 2008, durability testing began on the belt drive system. After 4,000 hours of continuous use, an independent lab was only able to measure a very minimal wear condition. For that reason, under normal circumstances, Pro Charger’s supplier of the hybrid drive-belt estimates that belt life is 7-10 years. Once the belt was deemed high quality, a complete supercharger was then continuously tested for six months. Finally, when that was complete, 21⁄2 years of in-vehicle testing were initiated. To say that Procharger wants to make sure they have a great product is an understatement.