Have you ever looked at your phone’s battery specifications? You may have seen something that looked like this:
Battery Capacity: 3000 mAh
Have you ever wondered what “capacity” and “mAh” stand for?
Capacity is the total amount of energy your battery can store. Capacity is measured in mAh, which stands for millamps-hour.The higher the mAh, the higher the capacity. The higher the capacity, the more energy your battery can store. The more energy your battery can store, the longer your battery will last. The longer your battery will last, the longer you can text, call, and use your device before you have to charge it again.
Think of capacity as the size of a car’s gas tank. A large gas tank can carry more gas. And the more gas you have, the longer you can drive.
So which battery has a greater capacity to power a device longer? A 3500 mAh battery or a 2130 mAh battery?
If you answered 3500 mAh. You’re right!
Because 3500 is a greater number than 2130, the 3500 mAh battery has a greater capacity to power a device longer than the 2130 mAh battery.
Here’s something else that’s useful and interesting. You can determine how long your battery will perform using the following equation:
battery performance(hours)=battery capacity(mAh)drain(mA)
Let’s say we have a battery with a capacity of 1500 mAh and a device that drains 100 milli-amps. How long will the battery perform?
Using the equation, we discover that the battery will power the device for 15 hours before it needs to be recharged.
Now, what if the same battery is placed in a more advanced device that has more features and drains 150 milliamps?
Using the equation, we discover that the same battery will power a more advanced device for 10 hours. This makes sense, because the advanced device requires more energy to operate all of its features.
When purchasing a battery, be sure to check out its specifications. The higher the battery’s capacity, the longer you can use your device.