If you are interested in tools, the first thing you will notice about Einhell tools is the uncanny red and black resemblance to Milwaukee. Is Einhell a cheap fake? Absolutely not. Einhell is a respected and longstanding brand from Germany but new to the US market. Like Dewalt, Milwaukee and others, they have an extensive range of accessory tools with matching 18V batteries and chargers. Einhell are BMW's official tools partner and that was enough to give me the confidence to try out their circular saw, their angle grinder and now their vacuum cleaner. Since I already have batteries, adding a portable vacuum cleaner to the collection wasn't difficult. Like my other Einhells, the vacuum cleaner is solidly built and ready to go! WHICH BATTERY SHOULD I BUY? All my Einhell batteries still have 3.0 volts. They certainly go well with this vacuum, but for the perfect balance I can opt for one of the lighter, lower-capacity versions. PERFORMANCE AND "HIGH PERFORMANCEโ? Exactly what you expect. I have a similar Makita vacuum and both brands work equally well. Both have a handy extension cord that allows you to use them as a cordless vacuum cleaner. No complaints. I hope this short review has been of some help. We wish you and your loved ones every success in your future projects!