DmofwHi Cordless Coffee Grinder Electric, USB Rechargeable Coffee Bean Grinder with 304 Stainless Steel Blade and Removable Bowl-Black

This is a great cordless grinder. Bought it to grind espresso beans when we vacation in our off grid lake cabin in Maine. It worked great and held its charge for 2 weeks. I actually bought a second one for spices since I didn't want to mix spices and coffee in the same grinder. It's only user on vacation so I can't review on everyday usage but for what I use it for, it's great.

Has it all. Easy to wash/clean, charge, cordless, compact and powerful.

I’ve used mine every day since it arrived, i charged it with the supplied USB-C cable when i first opened it and haven’t had to charge it since. (It’s been about a month). It’s a great little grinder, simple to use and easy to clean. - the stainless steel cup twists to unlock and then just wash with soap and water.To grind your coffee, just put the beans in, put the lid on and then the top cover goes over, push down gently and it’ll grind the beans. There aren’t any options for the type of grind but, it’s easy enough to take the lid off and look in between pulses. I have also used this at home and it’s fairly quiet so you won’t wake anyone up!Overall, this is a fantastic product, well worth the money if you’re looking for a compact grinder that travels easily.

⭐️⭐️ (2 stars) – First grinder with serious spin speed, but a blade seal/ bearing design flawI was genuinely impressed at first—this is the only grinder I’ve tried so far with enough spin speed and torque to produce a really fine, proper grind. The design also seals the grind chamber well, so you get no mess or grounds flying out—something I valued immediately.However, after about 20 uses, the blade became stuck. The motor still ran, but nothing spun. I applied WD‑40 and got about 20 more grinds before it seized again. After a few weeks of not using it (because of a relative’s visit), the blade now won’t budge at all. This is evidently due to a poor bearing or seal on the blade side.At nearly $40, I expected more robust internal components. The fit and finish of the grind chamber and the finish in use are decent—but a better seal or bearing would prevent jamming over time. Overall performance was great—until this fundamental design flaw became apparent.Pros:• High spin speed and torque—excellent grind consistency• Well‑sealed chamber to contain grounds• Easy to clean and operateCons:• Blade stuck after light usage—likely due to substandard blade-sided seal or bearing• WD‑40 only helped temporarily• Stall after just a month of storageVerdict: If it had better internal components under the grind blade, this could’ve been a solid mid‑range grinder. Unfortunately, the design doesn’t hold up even with only light use.

Compact, perfect for travel, pretty quiet. Full charge reduced by half on first grind, but has maintained 50% for the last four. My only complaint is that it takes several attempts to produce my preferred fine grind. However its less hassle to use than my electric grinder.

I have written very few 5-star reviews but this is probably the most surprising product I have purchased on Amazon. I ordered and received this in mid May. I fully charged it upon receiving it. it is now almost the end of October. I have used it every single day for the past six months and I am still only down to 50% battery used. Now, like a lot of battery indicators that may fall to zero tomorrow, but at this point I'm amazed. I bought this grinder because I wanted to save counter space and outlet usage. I don't have to have it stored on the counter and I don't have to plug/unplug it every day to store it. It just keeps going...and going...and going. I'm at the point where I think someone else is secretly charging this SOB behind my back but I am the only person who drinks coffee in our packed house - hence I don't want to take up space with something only I use. I've been putting off writing this until it reaches zero percent but at this stage that might not ever happen and I may be dead. And you know what - if it at some point loses the ability to charge - if I have to ever charge it again - I have already gotten my money's worth out of it since it is one less thing I have to frickin charge all the time.TL;DR buy this thing because 1) it may outlive you and you will rarely have to charge it and 2) it works great.

You can remove the blade by unscrewing the drive wheel from underneath. (It is a left-hand thread, so turn clockwise to loosen.) The little blade then comes right out. But be very careful handling or sharpening it, as it could easily become a flying object. The video by Chris Garage shows how to disassemble.Update March 2024. After only intermittent use for 14 months, my unit will no longer turn on when I press down on the plastic cover. I used Amazon's link to get customer support, and about 6 days later received a nice reply, requesting me to upload photos and more info, which I did. This was within the 500-day window, and so I just received notice that I will be sent a new unit. Very happy.Being a tinkerer, and having no longer any risk of voiding a warranty or not getting a replacement, I explored what might have caused the failure. When you press down on the plastic cover, it depresses 3 small spring-loaded tabs inside the unit. One of these tabs, in turn, presses on a contact switch, to activate the motor. (The other 2 tabs just provide some spring to return the plastic cup and turn off the motor when finished grinding.) The activating tab had worn down a very small amount, but just enough to no longer be able to cause the contact switch to activate the motor. If you could build up this tab back to its original height, the unit would function normally again.