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4.961,945 Google reviews“Very nice and fast service. Thank you!!!”— Andriy G.
Antwerp 5.0Wolvertem 4.9Up to 1 year warranty•Ecocheques
Samsung Galaxy S23 Ultra battery replacement

Samsung Galaxy S23 Ultra battery replacement

Repaired by our specialists in Antwerp & Wolvertem — often ready while you wait, no prepayment.

€89

± 1 h180 days warranty100% Original

Your device turns off unexpectedly, loses charge quickly and/or requires frequent charging.

4.961,945 Google reviews

“Very good job in 1 hour, change battery Samsung S-23 ultra for good price, great job”
Gallet C.Google review

Also usable for your insurance claim Insurance claims

All Samsung models: battery replacement

Does your Galaxy S23 Ultra no longer last a full day or does it suddenly shut down? A battery loses capacity over time. FIXNOW replaces the battery with a new one, so your device gets you reliably through the day again — without you having to think about a new device.

What does this repair involve?

New capacity

Best for: The phone shuts down unexpectedly, drains fast, or the battery percentage is off.

  • Your phone lasts a full day again without a top-up
  • Reliable capacity and lifespan
  • Professionally and safely installed

Is your Galaxy S23 Ultra not charging anymore?

If your Galaxy S23 Ultra stops charging, the battery is not always the cause. The problem is often the USB-C port itself, for example due to dust or debris, and this is checked and cleaned first before looking further at the battery. Only if the port turns out to be fine and the charging issue continues does battery replacement come into play.

From 1,945 Google reviews

What customers say about their Galaxy S23 Ultra

More reviews
Gallet C.26 September 2026
WolvertemSamsung · battery
Very good job in 1 hour, change battery Samsung S-23 ultra for good price, great job
Jp M.16 March 2025
WolvertemSamsung · screen
Top service ! Samsung galaxy s23 ultra had een barst in het scherm , was binnen 1uurtje vervangen . Zeer vriendelijke ontvangst . Aanrader voor iedereen.

Reply from FIXNOW

Hartelijk dank voor je geweldige review! 😊 We zijn blij te horen dat je zo tevreden bent over onze service. Het is fijn om te weten dat we je Samsung Galaxy S23 Ultra zo snel konden repareren en dat je een vriendelijke ontvangst hebt ervaren. We waarderen je aanbeveling enorm! 🌟 Als je in de toekomst nog vragen of reparaties hebt, staan we altijd voor je klaar. Bedankt dat je voor Fixnow hebt gekozen! 📱

Pieter J.16 December 2025
AntwerpSamsung · screen
Zeer tevreden van de herstelling. Het glas van mijn Samsung Galaxy S23 Ultra was gebarsten. Vlot online een afspraak gemaakt (winkel in Wolvertem) om enkel het glas te laten herstellen zonder een volledig nieuw scherm te plaatsen. Ik kreeg duidelijke uitleg ivm het risico, en de prijs indien het scherm alsnog vervangen moest worden. Een 4-tal uren na het binnenbrengen ben ik het toestel gaan ophalen en dit was terug als nieuw.

Reply from FIXNOW

Bedankt, Pieter, voor je fijne review! Super om te horen dat de glasreparatie van je Samsung Galaxy S23 Ultra zonder volledige schermvervanging perfect gelukt is, dat onze duidelijke uitleg over risico’s en prijs je hielp, en dat je het toestel dezelfde dag weer kon ophalen. We gaan voor snelle, vlotte service en kwaliteit, met 1 jaar garantie op de herstelling. Veel plezier met je als-nieuwe toestel en weet ons te vinden als je nog vragen hebt of iets nodig hebt bij FIXNOW. 👍

Reviews in their original language

See our repairs in action

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Common Galaxy S23 Ultra problems

Drains quickly

Do you need to charge several times a day? A worn battery holds much less charge than when the device was new.

Shuts down unexpectedly

Does the device switch off while there’s still charge left, especially in the cold? That’s a typical sign of a battery at the end of its life.

Gets warm or swells

A battery that heats up or makes the device swell is best replaced quickly — to prevent damage to other parts.

Charges slowly or erratically

Does the charge percentage jump around or does the device charge slowly? The battery (or the charging port) could be the cause. We run a diagnosis first.

How it works

Diagnosis

We measure the battery condition and confirm whether a replacement is the solution.

Replacement

We fit a new battery and reuse the original seal where needed for sturdiness.

Testing

We check charging and stability so your device works reliably again.

Why FIXNOW?

Unique glass-only offer — replace just the glass, not the whole screen
Up to 1 year warranty on most repairs
90% of repairs done within 60 minutes
Original parts where available

Parts & warranty

At FIXNOW you know upfront what a repair costs: we start with a diagnosis and discuss the price before we begin — no surprises afterwards. We work with high-quality parts and give a warranty on the repair carried out. If something doesn’t turn out as agreed, we work together to find a suitable solution.

Our stores

FIXNOW Antwerpen

Wiegstraat 13, 2000 Antwerpen

+32 469 44 22 19

Tuesday–Sunday 10:00–18:00

Directions

FIXNOW Wolvertem

Wilgenlaan 19 bus 2, 1861 Wolvertem

+32 472 29 15 53

Tuesday–Saturday 10:00–19:00

Directions

Not nearby? Send in your device

Choose a FIXNOW shipping label, with extra protection if you want, or send it yourself with track & trace. You only pay after the repair. Available from Belgium, the Netherlands, France, Germany and Luxembourg.

Frequently asked questions

Most smartphone repairs are ready within 60 minutes. For MacBooks, tablets and motherboard repairs the duration depends on the repair; the indicative time is shown next to the price of each repair. You can wait in the store or pick up your device later — we’ll let you know as soon as it’s ready.

The same repair for other Samsung models

Other repairs for your Galaxy S23 Ultra

Book an appointment or send your device to one of our stores.