I've never used Kies for anything so I can't help you there, what are you trying to backup? If your going to backup the whole phone, factory reset, and then restore your phone then your problem will just return. How long have you had your phone? If you've never rooted then it may be a hardware problem. I have great battery life after updating to 4.4.2. You should be able to find an app in the play store that can back up your data without root. All of your apps and contacts are backed up by google. I believe there are apps that will backup your texts and call logs without root. You are better off letting the play store reinstall your apps after a factory reset so the problem doesn't return.
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Phones & Tablets: Galaxy S4, Galaxy Note 8", Evo 4g LTE, Evo 3D, Acer Iconia A500, Samsung Galaxy Tab 2 10.1, Ipad 2, Nabi 2,
Rom: Rooted Stock Odexed, Hotspot Mod, Xposed, Wanum, several other xposed tweaks