Replace the battery, not the whole phone
Most phones and laptops feel old because the battery's tired, not the device. A relatively cheap battery swap revives a 'dying' gadget and saves it from the e-waste pile.
That sinking feeling when your phone won’t last till lunchtime, or your laptop dies the moment you unplug it, is almost always a battery story rather than a whole-device one. Lithium batteries are consumables — they fade with every charge cycle, typically dropping to around 80% of their original capacity after a couple of years. The processor, screen and cameras are usually fine. But a phone that can’t hold charge feels broken, and “broken” is what tips people into buying new.
Swapping the battery breaks that trap. It’s one of the cheapest, highest-leverage repairs there is: a part that often costs €30–60, fitted in under an hour, that hands you another two or three years from hardware you’ve already paid for — and already paid the planet for. Given that most of a device’s footprint is locked in at manufacture, keeping it alive is far greener than recycling it and buying a replacement.
The honest caveat: modern phones are increasingly glued shut, so DIY takes patience and the right tools, and a damaged lithium cell is a genuine fire risk — treat the old battery with respect. If a guide ever makes you nervous, a repair shop does it cheaply and quickly. Either way, the bar to clear is low: you’re rescuing a whole device by replacing its one truly perishable part.
How to do it
- Check the battery's health first — iPhones show it under Settings → Battery; on Android and laptops, free apps like AccuBattery report capacity. Below roughly 80% is the usual culprit.
- Decide DIY or pro: a repair shop or the manufacturer will swap it while you wait, or you can buy a kit from iFixit and follow their step-by-step guide for your exact model.
- If doing it yourself, buy a quality replacement battery (genuine or a reputable brand), and use the right tools — the cheap suction cup, spudger and screwdrivers in a proper kit matter.
- Power down, take your time, and never puncture or bend the old battery — a damaged lithium cell can catch fire. Work slowly when prising it loose.
- Fit the new battery, reassemble, charge fully once, and recalibrate by letting it run down and back up.
- Take the old battery to a shop collection point or recycling centre — never the household bin.
Pro tips & pitfalls
- Not confident opening glued-shut glass? A professional swap costs €40–90 and comes with a guarantee — still a fraction of a new phone, and far less faff.
- Order the battery for your exact model number, not just 'iPhone' or 'Galaxy'. The wrong revision won't seat properly and can refuse to charge.
What it's good for
Good for the planet
- Cuts waste Replacing a €30–60 part keeps an entire phone or laptop — glass, metals, circuit board and all — out of the waste stream for years.
Good for you
- Saves money A battery swap costs a tiny fraction of a new device; you spend €30–90 instead of €400–1,000.
- Grows skills Doing it yourself with an iFixit guide demystifies your gadget and gives you the confidence to tackle the next repair too.
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