Does the iPhone 5 actually have battery problems?

I have an iPhone 4s, and the battery life is perfect for me. On an average day, it lasts right until night time where i plug it in before i go to bed. By then it's around 15% battery. I'm considering getting an iPhone 5, because my 4s has been lagging and being very slow. Also, the new iPhone's look better and seem to be faster. I don't know how i'd go if i had a flat battery half way through the day, so does the iPhone really have a dodgy battery life? Are there any iPhone 5 owners out there who have an opinion?

No it's perfectly fine, actually I find it last a little bit longer than the iPhone 4 through the day, I have about 25% left at the end of the day, I spend approximately 30 minutes on text and call, and about half an hour to 1 hour on games, and maybe another hour on YouTube videos.

Maybe there's a problem with your battery, maybe contact apple care?

I own an iPhone 5 and am very pleased with how long the battery lasts. Days that I'm constantly on it (watching movies, playing games, Internet browsing) I may have to charge it during the day but if I'm just using it for texting and checking email and other smaller thing, then I sometimes will go a day or so with out charging it.