iMEND Premium
Original or manufacturer-grade part
The manufacturer's own cell. On an iPhone it keeps the battery health readout working without a service notice, which is the practical difference most people notice.
€85Galaxy S21 Ultra battery replacement in Dublin
A battery that no longer holds a day, shuts the phone down early or has started to swell, replaced and tested before it goes back in your hands.
Your price€5015 to 45 minutes
Mon to Sat 10 to 6
Includes the part, fitting, testing and the 360-day warranty. VAT included, and confirmed with you before anything is opened.
4,017+ reviews on Google, DoneDeal, Adverts.ie and Trustpilot
The Galaxy S21 Ultra arrived in 2021, with a 6.8 inch Dynamic AMOLED 2X display and the Exynos 2100 chip. Charging is over USB-C and it unlocks with an ultrasonic fingerprint reader under the display. It is rated IP68. A very large curved screen and a big camera housing that wraps around the corner into the frame. The first Ultra to support the S Pen, though it has no slot for it. The one sold in Ireland is SM-G998B.
360-day warranty
Most phone repairs in 15 to 45 minutes
No fix, no fee
Data-safe repairs
What this fixes
What a battery replacement actually fixes.
- Flat by the afternoonThe clearest sign. A battery is a consumable: it is rated for a few hundred full cycles and then it stops holding what it used to.
- Shuts down with charge still showingThe battery cannot deliver the current the device asks for under load, so it shuts down rather than corrupting anything. It often happens at 20 or 30 percent.
- Dies in the coldChemistry, not a fault in itself. A healthy battery slows in the cold and recovers; a worn one drops off a cliff and does not come back until it is charged.
- The percentage jumps aroundThe gauge has lost track of a cell whose capacity has changed. It is the battery rather than a software bug.
- It only lasts in warm roomsCold makes a worn cell fail sooner. A healthy battery does not care much about an Irish winter.
- The case no longer sits flat on a tableA swelling cell, and this one is urgent. Stop charging it and bring it in.
Before you spend anything
Is it definitely the battery?
A battery is the right answer most of the time, and it is worth ruling out the two things that imitate it.
IfIt drains fast and Battery Health still reads above 85 percent
Worth a diagnostic. A board fault or something staying awake in the background looks identical from the outside, and a battery would not fix either.
IfThe phone is dead and will not power on at all
Start with a diagnostic rather than a battery. A dead phone can be the battery, the port or the board, and we would rather find out before you pay for a part.
IfThe glass is lifting off the frame
Replace the battery, and do it soon. Fitting a new screen over a swelling battery just breaks the new screen.
IfIt got much worse right after a software update
Give it a few days. Reindexing after an update genuinely does flatten a phone, and it settles.
IfIt has always been like this since you bought it second hand
Worth checking whether it has been replaced before with a low-grade cell. That is common and the fix is straightforward.
If you are not sure which of these you have, that is what the free diagnostic is for. It costs nothing and it is the step that stops people paying for the wrong repair.
What parts do we fit?
Two tiers, and you choose knowing which is which: a genuine Samsung service part where one is made for this component, or premium aftermarket where none is. The warranty is 360 days on either.
The words genuine and Samsung certified mean something specific and we only use them when they are true of the part in front of us. Anything else is described as premium aftermarket, plainly.
- A Galaxy battery comes out through the back, not the front. The rear glass is glued on and has to be heated off first, then replaced with fresh adhesive, which is why it takes longer than an iPhone battery.
- Samsung uses strong adhesive under the cell itself. Getting it out without deforming it is the part of the job that takes the care.
What the €50 includes
- A new battery, fitted and cycled
- The old cell removed and recycled properly
- Charging, current draw and health checked after fitting
- 360-day warranty on the part and the workmanship
Nothing extra gets done and charged for without you saying yes to it. Where the diagnostic turns up a second fault, the work stops there and you hear the price before it goes any further.
A collection and return across Dublin can be added when you book. The repair price and the warranty are the same either way.
Choose the part
Two tiers, named before you agree.
On a battery the tier is not about how it looks. It is about whether the cell holds the capacity printed on it.
Value Edition
Premium aftermarket, tested to the same standard
A cell made to the original specification with cycle data behind it. We will fit this happily; what we will not fit is a cell nobody can tell us how it was stored or what it tested at.
€50The €50 on this page is our standard quote for this repair. Which tier suits your device is a conversation at the counter, and the price for each is on the table before you decide. The 360-day warranty is the same on both, because we would not offer a tier we did not think would last.
A cell sold as 3,300mAh that actually holds 2,900 shows full health on day one and falls off a cliff at eight months. That is the entire reason we are not the cheapest battery in Dublin.
How we do it
From the counter to back in your hand.
Tell us what it is doing
Book online in about two minutes, or walk in without an appointment. Describe the symptom rather than the repair, it is more useful to us.
Free diagnostic
Before a part is ordered we establish what has really gone wrong. It is free, and it is the reason people do not leave here having paid for the wrong thing.
You approve the price
The price is confirmed to you before anything begins, and it does not move afterwards unless you agree to something else.
The repair is carried out
Done at our Drumcondra bench by the technicians who do this every day.
Bench testing
We test what we replaced and everything that sits beside it, because that is where a rushed repair shows up.
Back in your hands
Pick it up from Richmond Road or have it couriered back across Dublin. Either way it carries the 360-day warranty.
Before it goes back
What we test every time.
A repair is not finished when the part is fitted. It is finished when the things around it have been checked.
Current under load
Checked while the phone is working, which is where a bad cell shows itself and a resting one does not.
Heat
Felt and measured while charging. A battery that runs hot from day one is going back out.
Temperature during charge
A new cell that runs warm is a new cell we do not send out.
Health reporting after the swap
Confirmed in settings where the device reports it, so you can see the number for yourself before you leave.
Is anything on the device at risk?
This is hardware work. We do not need to go into your photos, messages or accounts to do it, and we do not.
We do need to switch the device on and use it to test the repair, so we may ask for your passcode. If you would rather not hand it over, tell us and we will show you what we cannot verify without it. Any passcode you give us goes on the paper docket and the docket gets shredded. It is never stored in our system.
Back the device up before any repair. Not because we expect to lose anything, but because a device that has already been dropped is one whose storage has already been shaken, and a backup costs nothing.
Will it still survive a splash?
Treat the phone as no longer water resistant after any repair, including ours.
Apple's IP68 rating is measured on a brand new, factory sealed phone under controlled laboratory conditions. It is not a permanent property of the device. The seal degrades with age, heat and everyday knocks long before anybody opens it.
Opening a phone means cutting through that seal. We refit the display with fresh adhesive, which restores a physical seal and keeps ordinary splashes and rain out. What we will not do is tell you it is back to IP68, because we have no way to test that and neither does any independent shop in Ireland.
If your phone lives near water, say so when you book and we will talk you through what the adhesive does and does not cover.
The 360-day warranty
Every completed repair is covered for 360 days on the part and the workmanship. If the display we fitted fails, or the fitting was at fault, we put it right at no charge.
What it does not cover is a new accident. A phone dropped again after the repair, fresh physical damage, liquid damage, or a fault in a part we did not touch, all sit outside it. That is the same limit any honest repair warranty has.
No fix, no fee. The diagnostic is free, and if the repair does not happen you pay nothing.
Three ways to get it to us
- Walk in to Drumcondra4 Richmond Road, Dublin 3. No appointment. Mon to Sat 10:00 to 18:00, closed Sunday. Most phone screens and batteries done in 15 to 45 minutes while you wait.
- We collect and returnDoor to door across Dublin, Monday to Friday, usually 2 to 4 working days. The repair takes the same time; the courier is the difference.
- Send it in yourselfPost it to the shop with a tracked, insured service and a note with your number. We cannot cover a parcel in transit, and that is the honest trade-off for the route existing.
Same repair price and the same 360-day warranty on all three. The only thing that changes is how the device travels.
More for this model
Other Galaxy S21 Ultra repairs.
Another model
Battery replacement for other Samsung models.
Asked all the time
Galaxy S21 Ultra screen questions.
€50, including the part, the fitting, the testing and the 360-day warranty. VAT is included. You get that figure confirmed before anything is opened, and if we cannot repair the phone you pay nothing.
15 to 45 minutes for most phones. If the diagnostic turns up something else, or a part has to be ordered, we tell you before you commit rather than after.
Most phone batteries are rated to hold about 80 percent of their original capacity after 400 to 500 full charge cycles, which for most people is two to three years. Heat shortens it, and so does leaving it on charge at high temperature.
Two to three years of normal use before it is noticeably worse. Apple and most Android makers rate a cell to hold around eighty percent of its capacity after several hundred full charge cycles, and Irish weather and fast charging both take their toll.
It can, and not because the battery is a speed part. Phones slow themselves down to avoid shutting off when a cell can no longer deliver peak current. Replace the cell and that throttling stops.
Treat it as urgent. Stop charging it, stop using it, and do not press on the back or try to lever the phone open. Bring it in and we will deal with it properly.
No. Checking is free and so is telling you it does not need replacing, which happens more often than people expect.
iMEND is an independent repair service. Brand and model names are used only to describe the devices we repair. We are not affiliated with, endorsed by or an authorised service provider for any manufacturer.
Why bring it here
An independent workshop, not a kiosk.
We are a dedicated repair bench in Dublin 3. That means we take on work authorised channels turn away, and we tell you honestly when something is not worth fixing.
Diagnosed, not guessed
Every device is tested before we quote, so you are not paying for a part that was never the problem.
Parts that last
Genuine or OEM-grade components chosen for your model. We tell you which is going in before we start.
Your data stays yours
Hardware-only repairs. We never read, copy or move anything on your device.
No fix, no fee
If we cannot repair it, there is nothing to pay. No diagnostic fee, no handling charge.
Trusted in Dublin
Customer reviews
Recently purchased an iPhone 12 here, very impressed came with 100% battery health, very reasonable price and great service! Would recommend.
Excellent customer service bought my samsung A54 best price in dublin.
As I'm a lawyer, I need a reliable phone. For me, it's an office extension in my pocket. I decided to buy a Samsung S23 Ultra. I live in Drumcondra so being aware of their excellent reputation locally, I visited iMend last week. The manager and assistant could not have been more helpful. I bought the phone and it exceeds my expectations. On checking, the price was the lowest in Dublin. Anyone who needs a phone or a small electronic product will be well looked after by iMend. Great people to deal with!
Caz is a legend gave me a good deal looked after me good fella thanks mate
Bought a phone at imend, Drumcondra, near DCU. What could have been a difficult experience for an untechical minded person like myself was made so easy by the very helpful staff member who ensured my phone was up and running smoothly with everything working well before I left the shop.
Very good customer service very good products I recommend
Trusted in Dublin
4,017+ five-star reviews.
Over a decade in Drumcondra. 10,000+ repairs.
Get your Galaxy S21 Ultra screen fixed today.
Walk in to Drumcondra without an appointment, or book online and we will have the part ready.
Book a repair 24/7 · No fix, no fee · 360-day warranty · Free diagnostic