How to buy a laptop that's still good in five years

Buy for the parts you can't change later.

That's the whole game. A laptop's lifespan isn't set by how fast it feels in the shop. It's set by the screen, the keyboard, the hinge, the chassis, the ports and whether the manufacturer will still sell you a battery in year four. Those are fixed at purchase. Almost everything else — storage, sometimes memory, the operating system, the clutter — can be dealt with later by anyone with a screwdriver and an hour.

So spend your attention accordingly. Most people do it backwards, agonise over processor generations, and end up with a machine that's technically quick and physically finished in three years because the hinge cracked the corner of the lid.

The five things that decide it

Memory. Buy more than you think you need, because on most thin laptops it's soldered to the board and you will never add more. If the memory is soldered, treat the number you buy as permanent. 16GB is the sensible floor for a machine you want to keep. 8GB is already tight and will feel worse every year as browsers and video calls get hungrier. If the laptop uses replaceable modules — SO-DIMM, or the newer compact LPCAMM2 standard — that's a genuine mark in its favor, and you can start lower and upgrade at year three.

Storage. Almost always replaceable, and cheap to replace. Don't overpay at the till for a bigger drive if the machine has a standard M.2 slot. Do check that it has one rather than soldered flash.

Screen. You'll look at it for thousands of hours. Matte or at least semi-matte if you work near windows. Enough brightness to be usable outdoors on an overcast day. Get this wrong and you'll resent the machine long before it stops working.

Keyboard and trackpad. Type on it before you buy if you possibly can. Flex in the middle of the deck is a bad sign. Mushy travel doesn't improve with familiarity.

Ports. A machine that charges over USB-C from any decent charger is a machine you can keep alive after the original brick dies in a hotel room. Proprietary barrel connectors are a slow-motion problem.

The battery is a consumable, so treat it like one

Every lithium battery degrades. Yours will hold noticeably less charge at year three and be genuinely annoying by year five. That's not a defect. It's chemistry.

The question isn't whether you'll need a new one. It's whether you'll be able to get one.

Before you buy, search for the model plus "service manual" and plus "battery replacement". If the manufacturer publishes a proper service guide with part numbers, and third-party sellers stock the battery, you're looking at a machine that can be revived for the cost of a decent meal out. If the battery is glued into a case that's itself glued shut, you're looking at a workshop job or a landfill.

Business lines are usually the good news here. Corporate buyers demand parts availability and documentation, so the ThinkPad T and Latitude and EliteBook families tend to have both. A few manufacturers now build repairability into the pitch entirely and sell every internal component as a spare. Consumer ultrabooks are a mixed bag. Check, don't assume.

While you're at it, turn on the charge limit. Most vendor utilities let you cap charging at 80 percent, and macOS has its own optimised charging setting. If the laptop lives on a desk plugged in most of the week, that one toggle will do more for battery health over five years than anything else you do.

Check the software end date before you check the price

Hardware outlives software support now, and support ending is what actually forces most replacements.

Every platform has a published window. Windows versions have end-of-support dates, and some older machines can't make the jump to the current version because of firmware or security-chip requirements. Macs get new versions of macOS for several years, then security updates for a while after that. Chromebooks have an auto-update expiry date attached to the hardware platform, and it's published.

Look up the specific date for the specific machine. A laptop whose support runs out in three years isn't a five-year laptop, however well it's built. This single check eliminates a lot of otherwise tempting clearance stock.

Named trade-offs, so you can choose on purpose

Thin versus serviceable. The thinner it is, the more likely the memory is soldered, the battery glued and the cooling marginal. There's a real sweet spot a few millimetres thicker where you get screws, sockets and a fan that isn't screaming.

Dedicated graphics versus longevity. A discrete GPU means more heat, more fans, more dust, a bigger battery drain and usually a heavier machine. If you're not gaming or rendering, it's four years of extra noise for nothing.

Touchscreen versus battery. Nice on a convertible. On a clamshell you'll use it a handful of times, and you'll carry the extra weight and glare every day.

New versus refurbished business stock. An off-lease business laptop that's two years old is often better built than a new consumer machine at the same money, and comes with documentation and parts. The trade-off is a shorter remaining software window and a battery already partway through its life.

Look after it and it'll look after you

Heat is the real killer. A laptop that sits on a duvet or a car seat runs its fan through a clogged filter of dust and fiber, and every component ages faster. Use a hard surface. Once a year, blow the vents out with a can of compressed air, short bursts, fan held still so it doesn't over-spin.

Never pick it up by the screen. That's what kills hinges and cracks the plastic around the lid corners, and hinge damage is the single most common thing that makes an otherwise healthy laptop feel like rubbish.

Keep drinks off the desk on the keyboard side. A spill is one of the few failures that's genuinely terminal.

Get a sleeve. Not for style — so the corners survive being put in a bag next to a set of keys.

And back up properly, to something automatic. A five-year laptop will have at least one bad day. The difference between an inconvenience and a disaster is whether your files exist anywhere else.

The year-three service

Put a note in your calendar for the third birthday and do three things in an afternoon.

Replace the battery if capacity has dropped below about 80 percent of original. Both Windows and macOS will tell you the number if you dig for it. Swap the SSD for a bigger one if you're constantly deleting things. Then do a clean install of the operating system rather than an upgrade in place.

That last one is the cheapest performance upgrade available and almost nobody does it. Years of drivers, background utilities and half-removed software accumulate into a machine that feels tired. A clean install with only what you actually use puts most of the speed back.

The five-year laptop isn't a specific model. It's a machine you chose knowing which parts you could fix, and then bothered to fix them.