The top six battery hogs
LCD screens have to be powered themselves, but need a backlight too. The result is that they draw a lot of power, especially at brighter settings. OLED screens (used on iPhone X and Apple Watch) don’t require a backlight, so are kinder on batteries.
2 Data streaming
Streaming data at high speeds between your cell and the nearest tower requires a lot of energy. More modern versions are more efficient, but are still major battery killers.
3 Intensive applications
Processors are a bit like car engines, in that they use more fuel the harder you push them. Any task that requires a lot of processing power over a long time — such as converting a video, or the way a game is constantly using a graphics chip — will use a lot of battery power.
4 Wi- Fi
There’s some debate over whether mobile internet is more of a battery drain than Wi-Fi. Either way, sending data over the air from your device to your router (and back) will have an impact on your device’s battery life.
5 Hard drives
Got a Macbook? Then you should know that your hard drive could be the source of a major battery deficit. Think about it — spinning a magnetic disk at thousands of revolutions per minute uses more power than flash storage. If that’s a concern, it might be time for an upgrade.
Who would have guessed that communicating with satellites in low Earth orbit turns out to be taxing? The constant location searching your device does will quickly drain its battery.