The larger iPhones can usually last an entire day without really needing a charge, but what about the new iPhone SE? According to ETSupply, the iPhone 6S trapped in an iPhone 5S body sports a better battery than both. Looking at the chart provided above, the iPhone SE's slighting larger body has made room for a 1624 mAh battery, in contrast to the 1560 mAh battery found in the iPhone 5S.
The chart shows battery usage for several things including: Audio, Video, Wi-Fi browsing, LTE browsing, 3G browsing, and 3G talk for the three different iPhones. It is no surprise as the smaller screen allows for less battery usage, meaning users will need to charge the iPhone SE less than the 6S or 5S.