When to Replace Your iPhone Battery: Signs & HCMC Prices

Battery health under 80%, sudden shutdowns or a swollen back? Learn when to replace your iPhone battery and see 2026 prices at HAGA Thao Dien. Book now.

When should you replace your iPhone battery? Replace it when Battery Health drops below 80%, when your iPhone shuts down suddenly at 20–30%, or when the back starts to lift. At that point a new battery makes the phone feel close to new again, for a fraction of the price of a new iPhone. At HAGA Thao Dien, iPhone battery replacement starts from 900,000 VND (iPhone 11, OEM battery, VAT included) and we confirm the final price before we open your phone.

Below: how to check your battery, the six signs it is time, the difference between an Apple genuine battery and an OEM battery, and the 2026 price list.

How to check your iPhone battery health

1. Open Settings > Battery > Battery Health & Charging (on some newer iOS versions: Settings > Battery > Battery Health).
2. Look at Maximum Capacity. This is how much charge your battery holds compared with when it was new.
3. Check the message below it. If you see "Service" or "Your battery's health is significantly degraded", iOS is telling you the battery needs replacing.

According to Apple, iPhone batteries are designed to keep about 80% of their original capacity after 500 full charge cycles, and iPhone 15 models and later after about 1,000 cycles. For most people who charge daily, that is roughly two to three years.

6 signs it is time to replace your iPhone battery

If your iPhone also had water damage, a battery problem can be a symptom, not the cause. See our guide on what to do when your iPhone gets wet.

Apple genuine battery or OEM battery?

At HAGA you can choose between two options. Both are fitted by our technicians, and the price is confirmed before we start.

• Apple genuine battery: replaced with our Apple authorized partner. 90-day Apple warranty (Apple's policy). iOS shows the battery as a genuine Apple part, and Battery Health keeps working normally.
• OEM battery: a high-quality third-party battery. 6-month warranty from HAGA. Lower price. On recent iPhones, iOS may show an "Unknown Part" notice in Settings > General > About. This does not stop the phone from working, but some customers prefer a genuine part, especially if they plan to sell the phone later.

A real case from our store: a customer brought in an iPhone that kept shutting down and restarting after about five minutes of use. Our technician tested it and found the Battery Health was only 59%. A new battery fixed the problem the same day, with no other parts needed.

Our simple advice: if you plan to keep the phone for two more years or sell it later, choose the Apple genuine battery. If you need a reliable phone for less money, the OEM battery with a 6-month warranty is a good choice.

iPhone battery replacement prices in HCMC (updated 10/2026)

Prices in VND, VAT included. "Ask us" means the price depends on stock and we confirm after checking.

See every model on our full iPhone battery replacement price list.

What happens when you bring your iPhone to HAGA

1. We test first. Our technician checks Battery Health, charging and the phone's other functions, so we replace the right part.
2. We confirm the price before we start. No surprises. Our team speaks English, so everything is clear.
3. We replace and test again. You get your phone back with the warranty written on your receipt.

Can't come to the store? We offer free pickup and delivery within 20 km of our store (8:00–18:00). Many customers in Thao Dien, An Phu and the international school area send their phone this way.

Before any repair, back up your iPhone to iCloud or a computer. We may ask you to turn off Find My for some jobs. We never ask for your passwords in writing on a public channel.

FAQ

How long does an iPhone battery replacement take?
Usually 2–3 hours, for both the OEM battery and the Apple genuine battery. You can wait nearby in Thao Dien or use our free pickup and delivery.

Will I lose my data?
A battery replacement does not erase your data, but we always recommend a backup before any repair.

Is it worth replacing the battery on an old iPhone?
If the rest of the phone works well and you are happy with its speed, yes. A new battery costs far less than a new phone. If you are thinking of upgrading anyway, ask us about trade-in first.

Do you replace batteries for other devices?
Yes. We also replace batteries for iPad, MacBook, Apple Watch and Dell, HP laptops. See our repair prices.

Can I pay by card?
Yes. Card payments may carry a fee, and we always tell you before you pay. See our FAQ for expats.

Book your iPhone battery replacement: book an appointment online or message us on WhatsApp / Zalo 0925 435 688.
HAGA Smartech · 18 Nguyen Van Huong, An Khanh Ward (Thao Dien), Ho Chi Minh City · Mon–Sat 7:00–21:00, Sun 7:00–17:30 · 1,000+ Google reviews.

Reviewed by the HAGA technician team.