palandri
Well-known member
A lot of people that I play Ingress with carry around an external battery pack (and I usually do too). They come in all sorts of sizes and shapes. Their screens are on all of the time, WiFi, Data, GPS all on. It's not an ideal solution for everyone, but I think it's a pretty good investment. You can find 10,000mA packs for about $60, which is about 4-5 complete charges.
Eveready has some that are credit card size, but about 3/16" thick. I'll carry one when I am on vacation and taking a lot of pictures and movies.
To the original question about battery life, my Nexus 4 has been fine. It last all day without a problem. I don't install a lot of applications or music. I've installed, Amazon application store, Amazon MP3 cloud service, Air France, Flickr, MLB at bat, notepad and TuneIn radio pro.