The following are some advantages: Everything is good so long as it is still covered by the warranty (batteries). Various disadvantages: Friends, you and I live in a period when "disposable" cars and the rest of the things associated with consumer culture are commonplace. However, when you consider the fact that you paid 50,000 for a vacuum cleaner. You somehow bank on the fact that this is not just another piece of marketing junk, that it will work out exactly the warranty term for you, and that its repair (replacement of the complete battery pack) will cost no more than fifty percent of the price of the vacuum cleaner. The dacha was the location where the purchase of this vacuum cleaner actually took place. Used it every 2-3 weeks. Has never failed to receive proper battery care and maintenance. I am well-versed in the maintenance of my extensive collection of construction tools and batteries. In a nutshell, two and a half years had passed before the batteries gave out. Stupidly vacuums for one minute, and that's all there is to it. I went online to research how to repair various things and discovered that the manufacturer artificially solders some kind of component onto a non-collapsible and non-replaceable battery board. This component, according to its performance parameters, functions for two to three years before it stops functioning and drowns the entire block behind it. Watching the videos that can be found on YouTube is the best course of action for skeptics who are determined to disprove the claims being made here. You are going to have complete comprehension. It turns out that this is a really pricey toy, but happily, during the past exactly 2-2.5 years, its price has decreased significantly. And the functioning principle of each and every vacuum cleaner produced by this particular firm is exactly the same.