Our camp coffee hierarchy says the right setup is the one whose weight and faff you will still accept on day four. This page adds one rung to it. Weights below are stated figures: the OutIn and Wacaco numbers come from their own pages, read 2026-10-20, and the other four come from our method guide. We have not tested any of these.
The hierarchy, with the new rung
| How you travel | What we said before | Where a powered espresso machine fits |
|---|---|---|
| Car camping or basecamp | Bring whatever you want. Weight is free. | Fits. OutIn states 12V/24V car charging for the Nano 1. We found no car-charging statement for Nano 2 or Mino. |
| Van, boat or hut trip (new) | Not covered. | Fits. OutIn's About page lists van, car, camper and boat use. You can recharge between stops, and you may carry no stove. |
| One or two nights on foot | One compact, low-cleanup method. | Only if you would otherwise leave the stove at home. Stated weights are 670 to 740 g against 326 g for the AeroPress Go with its mug. |
| Long or fast-and-light | Just add water, in the mug, no cleanup. | No. Weight and recharging go the wrong way. |
The test for the new rung
The heater is the whole point of a battery machine, so ask one question: would the stove stay home? If you carry a stove for dinner anyway, you already have hot water, and a hand pump or an AeroPress gives you coffee with nothing to charge. If you carry no stove, the machine heats 50 ml of water itself, which OutIn puts at 149 seconds for the Mino in its lab. That is our opinion from the stated numbers, not a test result.
What the sources do not say
- OutIn's pages state brews per charge from its own lab. They do not state how cold weather or altitude change it, apart from a general note that battery life may shorten in extreme heat or cold on the Mino page.
- OutIn's own review summary says some Mino reviewers reported inconsistent performance at high altitude. One reviewer in Peru at 3,500 m wrote that it worked. We cannot verify either.
- No page states a carry weight for the stand, case or charger as part of a trip kit. See the travel page for the weights OutIn does state.
The simpler option
For most trips on foot the answer has not changed. Take the lighter method, as our backpacking essay argues. The powered rung is for the trips where you drive, float or sleep in a hut.