What's the battery life of the new iPad 4G with LTE disabled/enabled?
I'm not sure. But what I do know it the fact the battery in the new iPad has 70% more capacity and people describe it as massive.

It has a massive 11,666mAh (the iPad 2 has just 6994mAH). The same battery in an iPad 2 would give... 


  To put that in context, an iPad 2 with with this new battery, if such
  a device existed, would probably last close to 17 hours on Wi-Fi.


So I'm as curious as you are about the finding of the new battery! I'm waiting for the first reviews (it shouldn't be that long anymore since the first iPad are already sold...)