Battery life is one of the top concerns when buying or using a phone like the iPhone 11. People want to know if its mAh is enough.
The iPhone 11 has a 3,110 mAh battery, which delivers solid performance for everyday use with moderate power efficiency.
But numbers alone don't tell the full story. Let's look deeper into how the iPhone 11 performs in real life and what you can expect from it today.
Does iPhone 11 have good battery life?
Many people worry that older iPhones can’t keep up with daily demands. Streaming, social media, video calls — it all drains power.
Yes, the iPhone 11 has good battery life, lasting a full day for most users under normal use.
The iPhone 11 comes with a 3,110 mAh battery and uses the A13 Bionic chip. This chip was a huge step forward in terms of efficiency when it launched. While it's not the most power-saving chip today, it still handles most tasks without draining too fast.
Here’s what Apple claimed at launch:
| Usage Type | Battery Life |
|---|---|
| Video Playback (local) | Up to 17 hours |
| Video Streaming | Up to 10 hours |
| Audio Playback | Up to 65 hours |
In my daily use, I easily got through a full workday—messaging, a few YouTube videos, GPS navigation, and some music—without needing to recharge. However, after 2+ years of usage, I started noticing some drop in performance, which is normal.
Real-world performance tips:
- Brightness: Reducing screen brightness can add 1–2 hours of life.
- Background apps: Close unused apps. It helps more than you think.
- Low Power Mode: Very effective for squeezing out extra time.
Overall, the iPhone 11 still holds up well in 2025, especially for users who don’t need cutting-edge efficiency.
How many times can a 10000 mAh charge an iPhone 11?
When you're out for a long day or traveling, carrying a power bank is a smart idea. But how far can a 10000 mAh go?
A 10000 mAh power bank can fully charge an iPhone 11 around 2.2 to 2.5 times, depending on efficiency losses.
Here’s how the math works:
Step-by-step:
- iPhone 11 battery capacity: 3,110 mAh
- Power bank capacity: 10,000 mAh
- Typical energy conversion loss: 20–30%
That means you only get about 7,000–8,000 mAh of usable power from a 10000 mAh bank.
| Power Bank Capacity | Estimated Usable Power | Full Charges for iPhone 11 |
|---|---|---|
| 10000 mAh | ~7,000–8,000 mAh | Around 2.2–2.5 times |
| 20000 mAh | ~14,000–16,000 mAh | Around 4.5–5 times |
So if you're using your phone heavily while traveling—GPS, hotspot, video, social apps—one full charge and a couple more top-ups should be enough to keep you going for a full day or two.
Pro tip:
- Use a certified fast-charging cable to reduce downtime.
- Check for PD (Power Delivery) support for quicker top-ups.
- Don’t wait till 0% — topping up around 30%–40% is healthier for lithium batteries.
For frequent travelers or field workers, I always suggest keeping a 10000 or even 20000 mAh bank in your bag. It gives peace of mind.
Is 76% battery health ok?
If your iPhone 11 shows 76% battery health, you might start to notice it drains faster. But is it still usable?
76% battery health means your iPhone 11 battery has degraded significantly and should be replaced soon for better performance.
Battery health refers to the maximum capacity relative to when the phone was new. At 76%, your phone is only holding 76% of the original 3,110 mAh capacity—around 2,360 mAh.
What does that mean?
- Your phone might not last the whole day.
- Performance may slow down, especially during heavy tasks.
- You may see the “Battery Peak Performance” warning.
- Unexpected shutdowns might occur at 10–20% battery.
| Battery Health | Condition | Recommendation |
|---|---|---|
| 100–90% | Excellent | No action needed |
| 89–80% | Good but aging | Monitor usage |
| 79–70% | Poor | Plan to replace soon |
| Below 70% | Very Poor | Replace immediately |
I’ve used phones with 76% battery health. It’s okay for short-term use, but I had to charge twice a day. The real issue is that the phone becomes less predictable—it might jump from 20% to 0% suddenly. That’s not good if you rely on your phone for business or travel.
What to do:
- Replace the battery: It restores your phone to its full capacity. Apple or authorized services can do this.
- Use low-power mode often.
- Avoid fast draining apps like games or constant GPS.
A battery replacement usually costs much less than buying a new phone and gives your device new life. If your iPhone 11 works fine otherwise, it’s a smart move.
Conclusion
The iPhone 11 has a 3,110 mAh battery that still performs well today. But once battery health drops below 80%, a replacement can make a big difference.
