Compared to 5 tablets with largest battery life

Microsoft Surface RT9.5Microsoft Surface Win. RT tablet autonomy comparison
HP SlateBook x29.5HP SlateBook x2 tablet autonomy comparison
Sony Xperia Z29.5Sony Xperia Z2 tablet autonomy comparison
Samsung Galaxy Tab 8.99.5Samsung Galaxy Tab 8.9 tablet autonomy comparison
Google/HTC Nexus 99.5