mAh means milliamp Hour. It is a unit that measures electric power over time, such as
the energy capacity of a battery. In general, the more mAh and the longer the battery
capacity or battery life.
So how long will a 3000 MAh battery last? Well, that depends. A 3000 mAh battery
could power a device drawing 100 mA (milliamp) for 30 hours. A device drawing 200
mA would last only 15 hours.
Usage is driven by lot of factors like display used, processor used, software in the
phone. It’s driven also by what you were doing in the phone (calling, texting, watching
movies or gaming). On standby, a 3000 mAh can last several days. But home may of us
leave our phone in standby?
If you want to find out about your battery life of any phone just look at Battery on your
phone. On an Apple it will be in Settings>Battery and it will tell you your usage by app
for 24 hours and 7 days.
Here are some examples of power use:
- The amount of sensors used in the device and the usage of those sensors. Some applications are battery hogs: if your GPS, and wifi are always turned on, you will get less battery time than if your GPS, wifi is not turned on all time
- Screen size of phone eg:a 5 inch screen will give more backup then 5.5 inch screen considering other factors constant
- Type of processor used in phone. The more recent the phone, the better eg:a 1.4ghz processor made in 2010 will consume more power than a processor in 2017 (by same company).
- Similarly, a high-powered Graphics Processing Unit (gpu) will consume more power than a low power gpu (made by same company in same year
- Another important factor is the Operating System (OS) optimization. A phone with more optimized OS will give more battery life than a phone with less optimized OS. How does it do it?
- In an Android 4.4 when the phone screen is turned off, the phone will not go into deep sleep mode-- it will not force the most cores of the processor to go to sleep
- Whereas in Android M(6.0), when the screen is turned off the phone goes to deep sleep mode and it forces most of the cores to go to sleep and also turns off the sync.
Let’s face it, life takes juice. So carry some extra with you and live fully.