Review on Convenient Cordless Coffee Grinder Electric: DmofwHi USB Rechargeable with Stainless Steel Blade and Removable Bowl - Perfect for Grinding Coffee Beans, Spices, and Seeds by Ronnie Toups

I love this USB rechargeable coffee grinder. We often have power outages and wanted a battery powered coffee grinder after trying manual coffee grinders which lasted forever, everyone comes back but this is the best and most reliable. It is durable, rustproof and easy to clean. The manual says to only grind for 20 seconds, but 10 seconds gives me the right coffee grind consistency. The manual says it has an auto shut off to prevent overheating when used for 20 seconds, but I don't use it for more than 10 seconds so I haven't had any problems. There are two covers. One for the stainless steel grinding jar that snaps into place and a large transparent lid that fits over the removable grinding jar and activates the grinding process by pressing down. Very easy. Great grinder that grinds enough beans at once for our 10 cup French Press. Highly recommended!