Hi everyone I've got a problem with my Surface 3 battery. I charged it up to 100% after few second dropped to 98% and it gave me an estimation of 3 and half hours life battery, then at 95% it gave me an estimation of 11 hours also using word or photoshop. However as soon as i browse on internet the estimation drop at only 3 hours i am going crazy with this device. Furthermore I left the device on sleep mode with 72% of battery from 8.00 pm and at 7 am I found the battery 38% how is it possible. Someone can help me? I updated the device so it has the last windows 10 and the last firmware.