Lumia 920 battery life without LTE?

Quick question, I know LTE was a major battery drainer in its early days, and since then they've made chips to better handle LTE, my question is, if the LTE isnt activated will it still have roughly the same battery life? I'am coming from a GS2 and aparently it gets the same battery life (according to gsmarena). This is a major issue for me since I hate the battery life on my GS2. Is there even a way to toggle LTE off? I'am looking to having it imported and my network doesnt have LTE yet.