The multi-sander has its price has more than justified. The grinding performance is very high, spare paper is very good available from various merchants. The battery lasts even through a certain amount of time to turn off the grinder. I also have other Bosch tools with lithium-ion batteries 10.8. But God knows why Bosch here must use other batteries !? The chargers are compatible, the batteries still do not match each other. That's more than annoying! Had I known this, the impact on my purchasing decisions would have had. Well, but that's only once for the multi-sander alone beside the point. A good tool met on their own expectations, but does not fit battery excessively blue tools ...