Phone batteries don't last forever. After about 2–3 years of daily use, most batteries start to degrade. Here are the signs it's time for a replacement — and what to expect when you get one.

1. Your Phone Dies Way Too Fast

If you used to make it through the day on a single charge and now you're reaching for the charger by noon, that's the most obvious sign. Battery capacity naturally decreases over time — and once it drops below 80%, you'll really feel it.

iPhone tip: Go to Settings → Battery → Battery Health to see your maximum capacity percentage.

2. Your Phone Overheats

A little warmth during heavy use is normal. But if your phone gets hot during basic tasks — texting, browsing, or just sitting in your pocket — that's a red flag. A degraded battery can generate excess heat, which can also damage other components over time.

3. Random Shutdowns

Your phone says 30% battery, then suddenly powers off. This happens when the battery can no longer deliver consistent voltage. It's frustrating and unreliable — and it's a clear sign the battery is failing.

4. The Battery Percentage Jumps Around

One minute it's at 60%, the next it's at 35%. If your battery percentage is erratic and doesn't drain smoothly, the battery's internal chemistry is off. A new battery will fix this immediately.

5. Your Phone Is Physically Swelling

This is the most serious sign. If your screen is lifting away from the frame or the back panel is bulging, stop using the phone immediately. A swollen battery is a safety hazard and needs to be replaced right away.

⚠️ Safety warning

A swollen battery can rupture or catch fire. Don't try to puncture, bend, or remove it yourself. Bring it to a professional.

What to Expect from a Battery Replacement

Time: Most battery replacements take 30–45 minutes.
Cost: Typically $59.99–$99.99 depending on the device.
Result: Your phone will feel like new again — faster, cooler, and lasting all day.
Warranty: We back most battery replacements with our lifetime warranty on manufacturing defects.

Is it worth replacing the battery vs. buying a new phone?

If your phone is less than 4 years old and everything else works fine, a battery replacement is a no-brainer. You'll spend $60–$100 instead of $800+ on a new phone — and get another 2–3 years of life out of it. Read our full Repair vs. Replace guide for more help deciding.

5 Signs Your Phone Battery Needs Replacing