Charging estimate
How many times can a power bank charge your phone?
The short answer: fewer times than you might expect from mAh alone. Because of conversion losses, the usable energy is lower than the nominal capacity.
View power banksWhy mAh can be confusing
A power bank and a phone battery do not always operate at exactly the same voltage. Energy is converted during charging, and some energy is lost in that process. That means a 10,000 mAh power bank is not simply two full charges for a 5,000 mAh phone.
Practical indication
| Power bank | Compact phone | Large smartphone | Use |
|---|---|---|---|
| 10,000 mAh | About 2 times | About 1 to 1.5 times | Daily use and travel |
| 20,000 mAh | About 4 times | About 2 to 3 times | Trips and multiple devices |
What affects the number of charges?
Screen use, navigation, cold weather, cable quality, fast charging and the health of your phone battery all play a role. If you use the phone while charging, some energy goes straight to active use.
Which capacity should you choose?
If you mainly want to avoid an empty phone, choose 10,000 mAh. If you want several days of reserve or need to charge multiple devices, choose 20,000 mAh.
Compare 10,000 and 20,000 mAh
