Retina MB Bleeding 10% Battery Life Per Day In Standby - Fix

does your RMB have something that mine doesn't?

 

Should never charge your laptop in anything but free space. Power nap could have kicked in adding to the heat but generally batteries become hot when charging. The hotter they are the longer it takes to charge. The longer it takes to charge the more heat can build up and result in fire

 

@boltjames apparent fix posted for you...

Also, never charge your battery in an enclosed space, that's like an oven!

 

So you are running Windows on the Macbook?

It sounds like your sleep settings are having some issues. If you are losing 30% battery in 3 days standby, it's probably not going into hibernate so powering the RAM full time. If the device was boiling hot while charging in your bag, it was probably because the computer never shut off, and in addition to charging the battery, the computer was running and generating a lot of heat. Sounds like you need to verify that sleep and hibernate is working properly in Windows. Not surprising as those modes can be difficult to make work reliably if the drivers have not been optimized by the manufacturer.

Best practice is to not charge any battery device in an enclosed space because charging generates heat by its very nature. Nothing unique to Apple here. The faster the power supply charges it, the more heat generated, and the Macbook charges reasonably fast.

 

If you are using Windows 8.1 there is a command line tool called powercfg you can use to troubleshoot sleep related issues. In a administrator-level command prompt, you would type powercfg /sleepstudy and it will generate a report you can use to determine what is preventing the device from going to sleep, which is the likely scenario.

Ideally, what you want is for the device to sleep for some period of time, say several hours, during which time the system state will be stored in RAM, using about 0.5W power, then after that time if it is not interrupted, hibernate where it writes the state to disk and then shuts down entirely. The trouble is that any number of drivers or programs can prevent the computer from going to sleep.

Have you considered running Windows in Parallels instead? I'm not certain how the performance would be on the Macbook, but for light use, I suspect it would be fine. This would prevent you from having to use Boot Camp for Windows, and it allows you to mix OS X and Windows programs side by side. You would likely get better battery life, and more dependable performance this way.

 

Could it be the power nap? apologies if unavailable on the MB

 

The Macbook is Power Nap capable, however it's disabled on battery by default.