I have two iPads that I want activated on 3G, but right now it is too much for casual usage. (phonenews.com)
With more casual usage, that number jumps drastically to between 13 and 16 hours, but with the screen - on time showing only a slight increase to around 4.5 hours. (androidauthority.com)
And if you need a device for casual usage, then it's a yes. (phoneradar.com)