After 9 uses it died. Company stood behind it…
Original Review: 1 star. I was really excited to get this grinder. I read all sorts of great reviews on Amazon and many other websites. I felt confident this would be a great auto grinder to ease my old arthritic hands. It worked a whopping 9 times, the 10th time, it just slowed to nothing like a dead battery, as it had previously when needing a charge after each use. I thought this was odd, a 2000mAh lithium ion battery needing a charge after each use, odd that it barely made it through grinding enough for a cone before needing a charge. Anyways, I charged it overnight. The next morning, it started up, made a quarter drum rotation empty and the motor died out like the battery was dead already. I tried a different charger, different cable, different wall socket. 12 hours later, I gave it another try empty. Same thing, 1/4 turn dead. I tried a third charger, wire, outlet, 10 hours, same thing. Definitely dead. $45 for 9 uses, $5 per grind. Not worth it. $45 is the cost of a decent quality half at my local dispensary, I would have rather suffered the arthritis pain of 9 grinds and had the half as opposed to throwing the same money away at something that is now going to contribute to our current landfill issue, plus the environmental hazards of the lithium ion battery disposal.1st Verdict: a waste of $45, landfill fodder and lithium-ion battery environmental impact = product to avoid.Update 6/20/23: +2 stars for great customer service. I was promptly contacted by Mamba Grinders, after explaining the issue, and information and photos exchanged, a copacetic resolution was quickly offered. Mamba Grinders stands behind they’re warranty and are sending me a replacement unit. I will follow up with further updates.Update 7/15/23: +2 more stars for quick shipping on the replacement grinder. After giving this one a full charge, it was obvious from the first grind it had far more power than my first one. The new one grinds with much more torque and less reversing to unbind. I tried with both the old cap and the new to see if the grinding cap made a difference, it did not. It must have been a battery issue with a certain batch. I have used this every day for 21 days, no change in performance, battery holds up so far.2nd Verdict: worth every bit of the cost. When not a defective unit, it works great! Smooth consistent grinds, a ton of keef. I grind for my desktop vape and it’s perfect. Now I love this grinder. No more sore old stoner hands from my hand grinder.Final update: 12/7/23 I have used the grinder nearly daily for the past 6 months. Still working perfectly, battery holds a good long charge. Long enough that I usually can’t recall the last time I charged it. The grind is fine for use in a vape or to roll. Great grinder. Highly recommend..
✔ Verified Purchase
C
CrimsonClover
January 14, 2026
Awesome grinder, makes perfectly ground light fluffy herb everytime
Awesome, not sure how we did without this- but so happy that we purchased it. It works great at grinding and the speed is perfect for achieving a soft fluffy pile of herb. The quality is great but I do find it tedious to clean with my arthritis. Overall, this is a great grinder and we have recommended it the several friends- and they love it too.
✔ Verified Purchase
Easy on the hands
This grinder is amazing!!! I bought one for my s.o. and my best friend (who is losing hand function) and it works so perfect for her! (And my s.o. :) I would recommend this product to anyone!
✔ Verified Purchase
Works as it should, following instructions
This is a great little device. I read the instructions fully before using it, and found you should break up rock hard buds and only partially fill the grinder. The forward and reverse work great for breaking up sticky icky's, and works great for what it's supposed to do, as long as you follow the instructions.I gave it four stars because it is a little janky getting it filled and closed, and I've not tried to clean the kief out yet, but I figure that's going to be another janky experience. That's about all I can say about it negatively: The plastic feels a little janky.Other than that, it's super easy to use, load it, and close it up (this can be frustrating at times), then run it forward and reverse till it all gets grinded up. It fits perfectly in my large hands and it's not difficult to play with, though I would move the forward and reverse button to the side.
✔ Verified Purchase
R
RichieP
November 10, 2025
Mamba 2g
Very nice! I can get 2g in it, but only works with 1g or less. But the bones in my hands are not complaining anymore.
✔ Verified Purchase
Disappointing Lifespan - Battery Died After 8 Months
I purchased the Mamba Electric Herb Grinder in March 2025, and for the first few months, it worked exactly as advertised—fast, convenient, and easy on the hands. However, my experience took a sharp turn for the worse by December 2025.After only 8 months of regular use, the unit completely stopped taking a charge. I tried multiple cables and power blocks, but the battery simply gave out and the device is now effectively a paperweight. For a premium electric grinder, I expected it to last much longer than one season.After doing some digging into other reviews, I’ve noticed a recurring pattern of battery and charging failures within the first few months of ownership. It seems I’m not the only one dealing with a unit that won't hold a charge or dies prematurely.While the grinding mechanism itself is great while it works, the internal electronics and battery longevity are clearly not up to par. If you’re looking for a long-term kitchen tool, you might want to look elsewhere until they fix these reliability issues.
✔ Verified Purchase
Best flower grinder with stand
Had to replace my old one. Don’t remember it being this good before! Loading is quick and easy and few button presses to fill up a 1 1/4! Battery lasts a couple ounces at least. Always loved the durable feel and quality of this grinder and it has a stand for my cones.
✔ Verified Purchase
