★ Portable · battery & self-heating 7.9 / 10 · Editorial score

Editorial rating based on manufacturer specs and Amazon catalogue data. We do not trial products ourselves. How we rate

Outin Nano: the portable espresso machine with a battery that heats itself

Prices in euros from Amazon.de, as of 11 June 2026. Prices and availability may differ on Amazon.co.uk.

By Seydhan Cakmak · Editor-in-chief · Updated: · AI-translated from the German original

What portable machines from Wacaco often lack, a heater of their own, the Outin Nano brings: it is the portable espresso machine with a built-in battery that heats the water itself. So you do not have to carry a kettle around; you fill in cold water and the device heats it via the USB-C battery (3× 2,500 mAh). With electric 20 bar it then pulls an espresso, either from ground coffee or original Nespresso capsules (2-in-1). It charges via USB-C, in the car via 12/24 V or from a power bank, ideal for camping, road trips and travel. To be honest, you should know the limits: self-heating takes several minutes in practice (around 200 seconds just for heating, more like 5 to 8 minutes to a finished espresso), you only get around five cups per battery charge in heating mode, and at 670 grams and around 150 euros it is heavier and pricier than the manual Nanopresso. If you want espresso on the go without a separate kettle, though, this is the most convenient portable solution.

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Outin Nano portable battery espresso machine

⌗ Available variants

Outin Nano at a glance

In short: the Outin Nano scores 7,9/10 in our mini espresso machine review (from €150). Biggest strength: heats itself (no kettle needed). Main compromise: self-heating takes time.

All specifications come from manufacturer data sheets and the Amazon catalogue and were cross-checked before publication. The rating is an editorial overall assessment based on this data; we do not trial products ourselves.

Outin Nano: what works, what doesn't?

What works well

  • Heats itself (no kettle needed): the battery heats the water via USB-C, truly self-sufficient brewing
  • 2-in-1: ground & capsules: flexible with your own coffee or Nespresso capsules
  • Electric 20 bar: strong pressure without pumping by hand
  • USB-C / 12-24 V charging: in the car, from a power bank, from a laptop

Points of criticism

  • Self-heating takes time: realistically 5 to 8 minutes to a finished espresso
  • Limited battery life: only ~5 cups per charge in heating mode
  • Heavier & pricier: 670 g and ~€150, more than the Nanopresso

Specifications in detail

Typeportable espresso machine (battery-electric, self-heating)
Pressure build-up20 bar (electric)
Water tank50 to 55 ml (single shot)
Battery3× 2,500 mAh (7,500 mAh), charging via USB-C / 12-24 V
Heatingself-heating (~200 s for the water, realistically 5 to 8 min to espresso)
Coffee2-in-1: ground coffee & original Nespresso capsules
Capacityapprox. 5 cups per charge (self-heating mode)
Dimensionsapprox. 8.8 × 8.8 × 22 cm
Weightapprox. 670 g
Special featureswaterproof housing, cordless and self-sufficient

Build quality & everyday use

What carries the Outin Nano in everyday use: heats itself (no kettle needed) (the battery heats the water via USB-C, truly self-sufficient brewing) and 2-in-1: ground & capsules (flexible with your own coffee or Nespresso capsules). We have to be honest about the weaknesses: self-heating takes time, realistically 5 to 8 minutes to a finished espresso.

If you set the device up to save space, make sure it stands on a stable, level surface with some air around it. This protects the mechanics and electronics in continuous use.

“Outin Nano portable battery espresso machine: heats itself (no kettle needed) and 2-in-1: ground & capsules, and the trade-off is that self-heating takes time. At 7.9/10 a fair deal from €150.”
The MiniHaushalt.de editorial team

Who is the Outin Nano suited to? (buying advice)

Perfect for:

  • ✓Espresso on the move without a kettle
  • ✓Camping, road trip, car
  • ✓Anyone who wants capsules & ground coffee flexibly

Less suitable for:

  • ✕Anyone who wants it light & cheap (then Nanopresso)
  • ✕Anyone who needs several cups quickly
  • ✕The impatient (heating takes time)

Outin Nano compared with alternatives

Head-to-head with the top alternatives from our mini espresso machines comparison

Feature Outin Nano Nespresso Krups Essenza Mini XN110B Wacaco Nanopresso
TypeportableCapsuleportable
Pressure20 bar19 bar18 bar (manual)
Milk frothnonono
PowerBattery (USB-C)Mainshand-operated
Width8.8 cm8.4 cm7.1 cm

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Frequently asked questions about the Outin Nano

What is the advantage of the Outin Nano over the Wacaco Nanopresso?
The Outin Nano has a built-in battery and heats the water itself, so you do not need a separate kettle, unlike the manual Wacaco Nanopresso, where you have to pour in hot water and pump by hand. In return the Outin is heavier (670 g), pricier and dependent on its battery. More convenience weighs against more weight and price.
How long does an espresso with the Outin Nano take?
Heating the ~50 ml of water alone takes around 200 seconds; for a finished espresso you should in practice allow 5 to 8 minutes. It is quicker if you already pour in hot water (hot water mode without self-heating), then it works almost immediately, like a manual device, only with electric pressure.
How is the Outin Nano powered?
Via a built-in battery (3× 2,500 mAh) that you charge via USB-C, from a laptop, a power bank, a wall socket or in the car via 12/24 V. In self-heating mode one charge is enough for about five cups; if you use pre-warmed water, many more are possible because hardly any battery goes on heating.
Can the Outin Nano do capsules and ground coffee?
Yes, it is 2-in-1: you can use both ground espresso and original Nespresso capsules. That makes it flexible, with convenient capsules on the move and your own favourite coffee at home or when camping. This flexibility plus the self-heating set it apart from simpler portable devices.
7.9 / 10 · Portable · battery & self-heating

Verdict: is the Outin Nano worth it?

A solid option with a clear profile: if you can live with self-heating taking time, from €150 you get mainly one thing: heats itself (no kettle needed). It suits best: espresso on the move without a kettle.

If you want to compare alternatives, you will find detailed data and reviews on our mini espresso machines comparison page.

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Outin Nano
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