Your phone’s battery is the one component that quietly wears down every single day, and most people don’t notice until it starts affecting how they use their device. Here are five clear signs it’s time for a replacement.

1. Your phone dies well before the day is over. If a full charge used to get you through the day and now barely lasts a few hours under the same usage, battery degradation is almost always the cause.

2. The phone shuts down randomly, even with charge left. When a battery ages, it can no longer deliver consistent power, so the phone may shut off at 20% or even 40% without warning.

3. Charging takes much longer than it used to. A healthy battery charges at a predictable rate. If you’re noticing it crawl from 50% to 80%, the battery’s internal resistance has likely increased.

4. The phone feels warm even during light use. Aging batteries can struggle to regulate power delivery, causing heat buildup during normal tasks like browsing or messaging.

5. The back of the phone looks slightly swollen. This is the most urgent sign. A swollen battery is a safety risk and the phone should be brought in immediately — do not continue charging it.

If two or more of these sound familiar, it’s worth getting a quick battery health check. At TechFix, we test battery health in minutes and most replacements are completed the same day with genuine parts and a 90-day warranty.