So far the grinder is absolutely fine. The issue I have is with the batteries. Yes, they are Makita-styled, but they do not work in genuine Makita equipment, and they have to be charged using the separate charger. Where the Makita 'BL' battery would usually be charged (the yellow bit between the main terminals), there is a round power socket which connects to the supplied charger. Genuine Makita batteries work OK in the grinder. Well worth the money, but I would not have bought batteries ha...