A:AnswerI use these batteries on a daily basis, also my son uses them in his xbox 1 controller and we have never ever had any problem they last the same as Duracell and you only spend half the money Duracell cost.
A:AnswerYes Best Buys Warranties do cover the devices if there battery leaks and ruins your device. Great question! Best Buy Backs up there products with there warranties just like they guarantee price matching. Also these battery's are environmentally friendly which is another Bonus feature along with there quality and I use them in all my devices and the kids are always using them for there gaming controllers. I've shared them with family & friends who are pleased as I am and now they know where to get there own!