I did a lot of research into these hoverboards on different websites and safety and for me the only real choice was between Rolab or the Amazon trusted Bluefin trading. Most other companies although say "UK no 1 trusted brand" the website and address didn't check out with google and certainly did not seem like a UK business. From what I have found is that these batteries are about as safe as a mobile phone battery or any other Lithium-ion battery (laptops etc) and we have a number of these items in the household without issue or thought. I also found that most of the unsafe claims came from the US not the UK although I did find a number from the UK the details of where they were purchased, price etc weren’t given. Item arrived the next day, is of a very good quality and finish, well made as well as the other items that came with it. I just hope this is in fact as safe as Rolab makes it out to be. Like many other reviews Christmas present so not yet tested, however I will be leaving another review after using as I am aware of how stressful the choice between buying one or not can be. Definitely do not go for the seemingly cheaper websites you haven't heard of with amazingly low prices and showing as better than half price - advertising as the UK number 1. This is pretty much a give away from the start for me to avoid. A quick look into these and most don't seem to be UK based and research the prices on other sites. I work for a company that has recently had a lot of bad press due to users not following the instructions and or buying cheaper none compatible parts and quick to complain so I am aware of how fast negative comments can spread even on the news