Damn type cover just erased everything I wrote..lol too much to repeat..smh
Just check out the advanced settings of each power mode. You will see it has huge impact on battery life with what mode you choose. These modes take effect immediately. You can open task manager then performance to see real time cpu speeds and how they change immediately upon choosing various modes.
Performance gives you maximum cpu and Intel graphics performance and sets brightness on high. I use this mode while gaming or plugged up. For me, my cpu speeds stay around 2.2-2.4Ghz or higher full time.
Balanced gives you maximum power when needed or is called for. But when it isn't, it'll lower speeds to around 0.78Ghz or so.
Power Savings mode will dim the display. Which is still acceptable for me. Its cpu speeds stay at 0.78Ghz or lower. Cpu speeds and Intel graphics are set to maximum battery life. The sleep and hibernation activation times are also shorter.
I'm using power savings mode now and don't notice any negative effects on performance. Everything still loads up just as fast. No lag at all. Of course I won't do any serious gaming in this mode. For that I'd use balanced or performance. But it even states power savings mode is recommended for laptops or in our case tablet pc formgetting the most battery life on a single charge. Most people don't need pc to be at maximum speeds. So try this mode out to see how it performs for your usage of getting the most out of battery on a single charge is important to you. I will try this mode out later off of a full charge to see just how much longer it'll last. Of I'm already getting 5hrs or a little more on balanced, I can easily see powersavings mode getting 6- maybe 7hrs. The 2 biggest factors on battery life is CPU speeds/graphics and display brightness. This mode addresses those and reduces them.
So it is worth peeking around in power mode settings and advanced settings in there to get most out of battery life on device we have now. Just because a newer processor is going to arrive for a new surface won't help our current situation..lo. We trying to get the most out of what we have already. I'll use this mode more and post back on how long battery lasts.
Are there any battery apps/programs like on Android that show actual battery usage times? Along with Screen on times, standby times, etc.. like the various parts that's using up the most battery.