It sounds like you have something else happening that you are unaware of. Or maybe you are on wifi and you are out of range and it is searching. Either way your battery should not drain that quickly. I disable 4G because I don't get a steady signal in my area. It constantly tries to ping 4G towers and drains.
Buy a car charger and a few micro usb cables so you can charge througout the day. I am not sure what everyone is expecting for battery life with a 4G device or what you are comparing it to for that matter. I don't know of anyone with a 4G device with "great" battery life. Verizon has cut the prices of extended batteries for 4G phones due to poor battery life. Until battery technology improves this is going to be an issue.
Buy an extra/extended battery and test or return your device. But please stop expecting an "all day" battery experience on your 4G device with a extremely large screen that comsumes a ton of battery.
Its consuming battery on standby...on full bars of wifi. Eight hours one night of sleep it lost 35 percent. It has days where it dies really fast for no reason. Acts up.