I've had my 36v Bosch for over 8 years now and it's been faultless, had to replace one battery but the other original one that came with it just keeps on going, so really can't fault mine it's more than paid for itself! In fact I still have my old Bosch blue gear and all of that is still working just the older style batteries that have stopped working! And the fact that apart from the 36v all my new stuff is Milwaukee!