I bought this racket last year, and it still works with the original battery! So much so that, as the house is great, I just received a second for the floor, not to mention a third for our holiday apartment, prized southern mosquitoes! In the process I have to recommend two gift for my children who see the craft of envy, not without a certain sadism! However, I'm not gone up to 5 stars in my estimation because the edge of the racket being a little thick, it is quite difficult to "pinch" the flies "flat", and it takes a number of landfills for overcome the biggest ... for mosquitoes and "flour moths," Just one shot! I have not yet understood the superiority of the model "pro", also sold on the site, which costs 5 euros more, this model it already being a nice size!