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How to Know If Your Phone Needs a Battery Replacement

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4/6/2026
5 min read

5 Signs Your Phone Needs a Battery Replacement

Phone batteries degrade over time. After 2-3 years of daily use, most phone batteries lose significant capacity. Here are the telltale signs it's time for a replacement.

1. Battery Drains Quickly

If your phone can't last a full day with normal use, the battery has likely degraded below 80% of its original capacity. On iPhones, you can check this in Settings > Battery > Battery Health.

2. Random Shutdowns

If your phone shuts down at 20-30% charge, the battery can no longer deliver enough power. This is a clear sign of battery failure.

3. Phone Gets Very Hot

A degraded battery generates excessive heat during charging and use. If your phone feels unusually hot, the battery may be failing.

4. Battery Swelling

This is dangerous. If your phone screen or back is lifting, the battery is swelling and should be replaced immediately. A swollen battery can be a fire hazard.

5. Slow Charging

If your phone takes much longer to charge than when it was new, the battery cells may be degraded.

Battery Replacement at Lakemba Mobile King

Battery replacement is quick and affordable. We replace batteries for all iPhone, Samsung, and Android models in about 30 minutes with a 6-month warranty. Prices start from just $49.

Visit us at 52 Railway Parade, Lakemba NSW 2195 or call 0410 807 546.

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