Grinding in 3 Steps.
Ultra-compact Electric Burr Grinder
ZenithNano Grinder V3
ZenithNano Grinder V3
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If your ZenithNano doesn't perform as promised, we'll make it right within 30 days—replacement or refund.
Specifications
Specifications
Grinder Type: Premium 420 Stainless Steel Conical Burr
Grind Range: 6-50 Clicks
Material: Stainless steel, Aluminum alloy, Polycarbonate
Bean Capacity: up to 28g
Dimensions:
- Compact: 5.6 x 5.6 x 15 cm
- Extended: 5.6 x 5.6 x 20 cm
Weight: 440 g (0.98 lb)
Power Source: Rechargeable 800 mAh battery

Next-Generation Portability.
Compact When You Carry It.
At just 15cm (6.1"), it sits comfortably in your palm, your jacket pocket, or the corner of any bag. When it's time to grind, twist the base and it expands to 20cm, creating a dedicated grounds chamber.
Real Burrs, Real Consistency.
Premium 420 stainless steel conical burrs deliver consistent grinds across every setting. Not ceramic. Not blades. No shortcuts.
44 Levels of Precision.
One grinder handles every method in your rotation. No second grinder needed.
Espresso: Clicks 2–7
*ZenithShot Elite: Clicks 3-6
Moka Pot: Clicks 8–16
Pour Over: Clicks 17–25
French Press: Clicks 26–34
Cold Brew: Clicks 35–43
Rechargeable. Cordless.
The built-in 800 mAh rechargeable battery delivers over 18 full grinding sessions* on a single charge — enough to power an entire week of daily brewing without reaching for a cable. And when it's time to recharge? USB-C.
*Based on click 4, 18g of dark roast bean.
Step 1: Unlock
Twist the top to open the bean loading chamber.
Step 2: Fill
Load up to 16–18g of beans and twist to securely lock.
Step 3: Auto-Grind
Twist to extend the chamber, press start.
How ZenithNano Stacks Up
|
Manual Grinders | Electric Portables | |
|---|---|---|---|
| Portability | 6.1" collapsed | 6.3"+ | 7.5-8.5" |
| Weight | 0.98 lbs | 1-1.15 lbs | 1.3-2.2 lbs |
| Grind Settings | 44 clicks | 20-90+ clicks | 30-40 clicks |
| Burr Type | 420 SS Conical | SS or Ceramic Conical | SS or Ceramic |
| Power | One-button, auto-stop | Manual cranking | Button press, no auto-stop |
| Battery | 16+ sessions | No battery needed | 15–40 sessions |
| Price | $104.99 | $65-$250 | $99-$259 |
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Frequently Asked Questions
FAQs
Is this really an electric burr grinder at this size?
Yes. It uses genuine 420 stainless steel conical burrs — the same material used in professional hand grinders.
The electric motor does the work; the burrs do the precision.
I have a ZenithShot Elite. What grind setting should I use?
Start at click 10. We don't recommend going finer than that. Anything below click 10 can choke the extraction.
If your shot pulls too fast, adjust one click finer at a time until you find your sweet spot.
How many grinds do I get per charge?
Over 13 full grinding sessions on a single charge; enough for a full week of daily brewing.
Exact count varies with grind fineness and bean density (light roasts require more energy), but you won't need to think about charging during a long weekend trip.
What does the twist-expand mechanism actually do?
In compact mode (14cm), the grinder is pocket-sized and ready to toss in your bag.
When you're ready to grind, twist the bottom section and it extends to 19cm, creating a dedicated chamber where your grounds collect — clean, separated, and ready to pour directly into your brewer.
When you're done, twist it back and it collapses to travel size.
Can it grind fine enough for espresso?
Absolutely. The grind range starts at click 6, which produces a fine espresso-grade grind.
With 64 total settings, you can micro-adjust to dial in your exact shot.
How do I clean it?
The twist-expand design means grounds collect in a separate chamber — not packed around the burrs.
Disassembly is tool-free, and a quick brush clears retained grounds in seconds.
Can I take it on an airplane?
Yes — in your carry-on bag. The TSA and FAA permit coffee grinders and small battery-powered electronics in carry-on luggage.
The built-in 800 mAh lithium-ion battery is well within the FAA's 100 Wh carry-on limit. However, per current FAA and airline regulations, we recommend always packing it in your carry-on rather than checked luggage, as most airlines now require or strongly recommend lithium battery devices travel in the cabin.
How long does it take to charge?
The 800 mAh battery charges via USB-C — the same cable you already carry for your phone. A full charge takes approximately 1–2 hours depending on the power source.
- 5 stars: 36 (75%)
- 4 stars: 12 (25%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
So compact and chic! Love how powerful the ZenithNano grinder V2 is! I’ve used it a few times already and only charged it once! Can’t wait to take it outdoors with us!
For the price, this machine feels far more premium than expected. The steel burrs, metal body, and tidy fit all make it feel like a real tool instead of a toy.
Grind quality is strong and the build feels solid, though I wish the battery stretched a little farther for long weekends outside. USB-C charging does help a lot.
This little grinder has become part of my desk setup. I load beans, hit the button, and move on to the kettle. The compact size makes drawer storage ridiculously easy.
At first glance, this small grinder looks modest, but the burrs produce a surprisingly uniform grind. I use it for V60 most days, and it has stayed very steady from cup to cup.
If you travel with an AeroPress, this portable grinder makes a ton of sense. The size is right, the grind is consistent, and it slips into the same pouch with room left.
Right out of the box, this machine felt sturdier than I expected. The clicks are easy to repeat, the body feels premium, and switching between AeroPress and pour-over has been simple.
My old manual grinder has mostly stayed home since this tiny grinder arrived. It is faster, easier on sleepy mornings, and still gives me a clean pour-over grind.
Hotel coffee has been rough lately, so I started packing this tiny grinder. It is compact, easy to charge, and gives me fresher cups without taking over my luggage.
After months of hand grinding, I finally tried zenithnano and wish I had done it sooner. It saves time, saves effort, and still gives me a clean, balanced grind for office pour-over.
What stood out first were the click settings on this grinder, which feel precise instead of vague. I can move between moka pot and French press without guessing, which makes travel brewing much easier.
Paired with my portable espresso maker, this has worked better than expected. Once dialed in, the grind stays repeatable and the shots come out rich with very little fuss.
For solo brewing, the grind quality is very good and the auto-stop works reliably, but the bean capacity is still best for one person. Overall, this has been an easy win for me.
During early office mornings, this portable grinder has performed well and stayed consistent, but it is a bit louder than I want in a quiet room. Still, the results are good enough that I keep using it.
I was skeptical about electric travel grinders, but zenithnano changed my mind. It is compact and tidy, though I do wish the battery lasted a bit longer.
Bought this mini grinder for my husband and now he carries it to work every day. He loves the one-touch auto-stop and keeps saying the grind quality is legit.
I use this with my travel brewer and really like the combo. The grinder stays compact in my bag, the burrs are consistent, and cleanup has been refreshingly simple.
I brought this travel grinder on a four-day camping trip and loved it. It packed small, charged quickly, and handled every morning dose without any drama at all.
Tucked into my work tote, zenithnano has been excellent for office coffee. Grind consistency is impressively even, the auto-stop works every time, and it fits neatly beside my dripper.
Since buying it, my weekday coffee routine has changed completely. This mini grinder keeps my desk brews consistent enough that they taste better than most nearby cafe options.
The auto-stop on this thing is not marketing fluff. I press the button, prep water, and it finishes the dose on its own. That convenience alone has made mornings smoother.
I bought this portable grinder for weekend trips, but now I use it at home too. It is simple to dial in, the grind looks even, and the size is honestly impressive.
The collapsing design sold me on this portable grinder. It disappears into my dopp kit and grinds evenly, though I wish the bean chamber held just a bit more.
On every recent trip, this travel grinder has been easy to pack and easy to trust, though I would still love a slightly grippier finish on the outside. Even so, I am happy I bought it.
I like this small grinder a lot, especially the footprint, but finer settings take a little longer than I hoped. Not a dealbreaker, just something I notice on rushed mornings.
Paired this with my ZenithShot Elite at click 10. Rich espresso with beautiful crema. Don't go below 10 — it chokes. Once dialed in it's incredibly consistent.
Used to grab a $6 latte every morning. Now I grind fresh at my desk and brew pour-over. Better coffee, fraction of the cost. Paid for itself in three weeks.
Grind quality is legit and auto-stop works great. The 16-18g capacity is perfect solo but you'll need two rounds for two people. Otherwise excellent for the price.
Spent six months hand grinding before buying this. Don't miss the arm workout one bit. Grind quality at medium settings is comparable. Telescoping is ingenious.
It grinds beans, it's portable, it collapses small, and it stops on its own. Consistent enough for daily pour-over. Battery lasts a week. Solid buy for $90.
If you use an AeroPress this is a no-brainer. Click 18, press the button, perfect medium-fine every time. Collapsed size means both fit in the same pouch. Love it.