Replacing a laptop in four days
Verdict
Pick : Apple MacBook Air 13-inch, M4 chip
the only one of the six that ticks all three constraints without making me guess a missing value.
- : you work on the move all day and your budget can absorb an unplanned purchase.
- : a 15-inch model from the lightest lineup on the market, weight matters more to you than bulk
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I haven't tested most of the products mentioned here. I analyze from the outside: spec sheets, manuals, standards, published teardowns, and cross-checked public feedback. When I've had the object in hand, I say so. When I can't claim anything, I say that too.
Who it's for
Right for you if
- You work on the move all day and need a light machine with good battery life
- Your budget can absorb an unplanned purchase (theft, damage) without waiting
- You prioritize weight and battery life over screen size
Not for you if
- Weight doesn't matter to you as much as bulk or screen size
- Your budget doesn't allow for an unplanned purchase
- You don't need to work while traveling
Four days. That’s what I had left in Lisbon before getting back on the road, and it’s the constraint that structured everything.
This buying scenario doesn’t exist in comparison sites. They all assume you have time: to read, compare, wait for a sale, hesitate between two configurations. An emergency replacement follows different rules, and the first is that an unavailable product isn’t a candidate, whatever its merits.
The three constraints
They didn’t move a millimeter in four days, which is already telling.
It has to be carried all day. On my back, in a shoulder bag, fifteen kilometers on foot some days. Weight is my first criterion, before power, before the screen, before the price.
It has to last a workday without a charger. Not an office workday. A day where the charger stays in the room because the café has no outlet and the library closes at five.
It has to be delivered before I leave. Four days, a temporary address, no possible return afterward.
How I found six candidates
I didn’t read a comparison site. I opened two on the first evening, and closed both within ten minutes for the same reason: they ranked machines I couldn’t receive before I left, and neither mentioned availability as a criterion.
The method that worked is dumber than that. I filtered by screen size, between thirteen and fifteen inches, then sorted by whatever shipping window the seller displayed. That left about thirty listings. I eliminated anything whose listing carried neither weight nor battery life, which cut two-thirds of them in one pass. That left about ten machines, six of which were something I could actually have carried.
This approach has an obvious flaw: it favors manufacturers who write good spec sheets, not the ones who make good machines. I own that, because I had no way to assess the second quality in four days, and because the first one is at least verifiable.
It also had a side effect I hadn’t anticipated. In four days, I didn’t look at a single product photo. Not one. I spent my time in spec tables and manuals, and I think it’s the first time in my life I’ve bought something worth more than a thousand euros without ever wanting to know what it looked like.
These last two eliminations might look petty. They aren’t. When weight is your first criterion and the sales page doesn’t give it, the page has already answered your question: it’s not an argument the seller is leading with, so it’s probably not a strong point. I’d rather rule out a good machine over a silent spec sheet than keep a machine where I don’t know the one piece of data that matters most to me.
The keyboard case is different, and it’s the only one in this table that’s really worth something. I typed on the previous generation of this machine for two years, every day, on trains and in cafés. I know what I’m talking about, and that’s rare on this site. What I don’t know is whether the manufacturer has fixed the feel since, and nothing on the spec sheet says either way.
No M in this table. I haven’t weighed these machines, I don’t have an instrument, and I’m not going to turn a seller’s data into a personal reading.
A note on the weight of the machine I settled on: the spec sheet displays a value that corresponds to a shipping weight, packaging included, not the weight of the device itself. I’m not repeating it here. This is a common issue, and it’s exactly why a spec sheet that doesn’t publish a clear weight is a signal, not a detail.
Why that one
It ticks all three constraints without making me guess a missing value, and it was available immediately. This isn’t brilliant reasoning. It’s the reasoning that’s left when you have four days.
Six months later, what I can say, and this is firsthand, not analysis: the battery life holds up to what’s advertised, the system’s ergonomics cost me a week to adjust to and nothing since, and the keyboard doesn’t make me type badly. That last point wasn’t in my criteria. It should have been.
What I can’t tell you is whether it’s the best machine on this list. I haven’t tried the other five, and nobody can tell you that without having carried them on their back for six months.
Revision log
The M5 generation has since come out, and the model described here is now down to residual stock. If you’re reading this today, the current equivalent is the same 13-inch, one generation later. The reasoning behind the three constraints doesn’t change; the spec-sheet numbers do.
These three questions stay open because I don’t buy six machines to keep one, and the method is detailed in how I choose.
What this episode cost me wasn’t the price of the machine. It was discovering, in four days, that my number-one criterion for five years hadn’t been weight. It had been habit. I replaced the same category of object that had been taken from me, switching brands by accident rather than by decision, and I got lucky that it landed right.
Apple MacBook Air 13-inch, M4 chip
This product ships from Amazon's French store: prices in euros, shipped from France, possible import charges outside the EU.
View on Amazon.fr (French store), opens in a new tabMeasurements
| Produit | Screen size () | Weight listed () | Availability at time of check () | What I know about it () |
|---|---|---|---|---|
| Apple MacBook Air 13-inch, M4 chip | 13 in C | Not reliably published on the spec sheet C | Residual stock C | Owned and used daily since February C |
| LG Gram 15Z80T, 15-inch, 1290 g advertised | 15 in C | 1290 g C | In stock C | Previous generation owned for two years C |
| LG Gram 17Z90TL, 17-inch, 1389 g advertised | 17 in C | 1389 g C | In stock C | Never had it in hand C |
| Samsung Galaxy Book6 Pro 14-inch | 14 in C | Not published C | Shipping 3 to 4 days C | Never had it in hand C |
| Lenovo Yoga Slim 7 14ILL10, 14-inch OLED | 14 in C | Not published C | In stock C | Never had it in hand C |
| Lenovo IdeaPad Slim 5 14IMH10, 14-inch | 14 in C | Not published C | In stock C | Never had it in hand C |
Ruled out
| Product ruled out | Reason | Source |
|---|---|---|
| LG Gram 15Z80T, 15-inch, 1290 g advertised | The keyboard. A soft, mushy feel with no feedback, on which I made twice as many typos as elsewhere. It's the only line in this table where I'm speaking from experience | Direct observation, two years of daily use of the previous generation of the same model |
| LG Gram 17Z90TL, 17-inch, 1389 g advertised | The format. A 17-inch doesn't fit the bag I already own and won't fit any of the ones that pass as cabin luggage. The weight is excellent, the bulk is disqualifying | Manufacturer spec sheet, screen size and weight as stated, checked August 11, 2026 |
| Samsung Galaxy Book6 Pro 14-inch | Shipping listed at three to four days. That was exactly the time I had left, with no margin for a delivery hiccup | Product page, shipping window as displayed, checked August 11, 2026 |
| Lenovo Yoga Slim 7 14ILL10, 14-inch OLED | The spec sheet doesn't publish the machine's weight. Not in the listing, not in the specs table | Product page, absence noted, checked August 11, 2026 |
| Lenovo IdeaPad Slim 5 14IMH10, 14-inch | Same reason, same absence, same conclusion | Product page, absence noted, checked August 11, 2026 |
What I can't tell you
- Has the keyboard on the current generation of the Korean 15-inch been revised? My observation covers the previous generation, the spec sheet says nothing, and I haven't had the new one in hand.
- Are the two machines ruled out for not publishing their weight actually light? Probably, for one of them. I won't know without weighing it, and I don't have it.
- Does the battery life manufacturers advertise match an actual workday? None of the six spec sheets describe their measurement protocol, which makes the numbers incomparable across brands.
This choice follows the manifesto: no displayed price: the price lives with the seller, with its own date. read the manifesto
Revision log
- Reviewed on 12 August 2026. What changed:The M5 generation has since come out, and the model described here is now down to residual stock. The reasoning behind the three constraints doesn't change; the spec-sheet numbers do.