Should I charge my iPhone every night?

When It Makes Sense

• Good fit: You rely on your iPhone for long workdays, use power‑intensive apps, and often finish the day with less than 20% battery. Plugging in overnight ensures a full charge for the next morning.
• Good fit: You have a modern iPhone model with optimized battery‑charging software that limits charge to 80% until you need full capacity, reducing wear while still offering convenience.

When You Should Avoid It

• Warning sign: You typically end the day with 80% or more battery and your usage pattern rarely drops below 30%. Nightly charging may keep the battery at a higher state of charge longer than needed, which can accelerate capacity fade over years.
• Warning sign: Your iPhone is older (6+ years) and already shows reduced maximum capacity. Constantly keeping it at 100% can exacerbate aging, so you may prefer charging only when the battery hits a lower threshold.

Pros and Cons

Pros

• Convenient – you start each day with a full charge, reducing the chance of running out of power during critical moments.
• Predictable battery level – eliminates the need to monitor charge percentage throughout the day.

Cons

• Potential for faster long‑term battery wear if the device stays at 100% for many hours each night.
• May be unnecessary for users with light daily usage, leading to wasted electricity and reduced overall battery lifespan.

Decision Checklist

• Do I regularly finish the day with a low battery (under 30%) that would hinder my next‑day activities?
• Does my iPhone have Apple’s Optimized Battery Charging enabled, and am I comfortable relying on that feature?
• Is my device older or already showing significant capacity loss (below 80% of original)? If so, consider limiting time at 100%.

Alternatives to Consider

If nightly charging feels excessive, you can adopt a “charge when needed” approach: plug in when the battery drops below 20–30% or use a short 30‑minute top‑up during the day. Enabling Apple’s Optimized Battery Charging (Settings → Battery → Battery Health) lets the phone learn your routine and finish charging just before you wake up, offering a middle ground between convenience and battery health.

Final Recommendation

For most users, charging overnight is safe and convenient, especially when Optimized Battery Charging is active. However, if you consistently end the day with ample charge or own an older iPhone with noticeable capacity loss, charging only when the battery falls below 30% can extend overall lifespan. Evaluate your daily usage, device age, and whether you’ve enabled Apple’s battery‑optimisation features before deciding, and consult Apple Support or a qualified technician for personalized advice if battery health is a concern.