After putting the Greenworks 24V grinder through its paces in my garage for 3 months, I'm impressed by its brushless motor's stamina – it chewed through rusty bolts and tile cuts without overheating. The 4Ah battery consistently delivered 25-30 minutes of heavy grinding per charge, though cold weather reduced runtime by ~15%.

The tool-free guard adjustment is genius when switching between cutting (I prefer 45° positioning) and grinding tasks. However, the plastic locking button feels flimsy compared to metal competitors – mine popped out during a wheel change but Greenworks' warranty service shipped a replacement within a week.

Where this grinder shines: The cushioned grip saved my hands during a weekend fence repair marathon. It balanced perfectly for overhead cuts, though the limited guard rotation (only 90°) forced awkward angles when working in tight corners near my water heater.

Major gripe? The included wrench bent on first use – I now use a standard socket wrench. Also, the USB power bank feature drained batteries faster than expected when charging phones onsite.

For $20 less than pro brands, it's ideal for DIYers needing cordless convenience without daily jobsite abuse. Just budget for a face shield – that spark shower while grinding concrete pavers convinced me!