Lava Xolo X900
I recently acquired a Lava Xolo X900 in a trade over at xda. There isn't much info on the Xolo's battery life, so I thought I'd post what I've been getting.
Idle time is phenomenal. I watched 2 hours of the Google I/O 2012 video, and then let the phone sit for a few days. The 2 hours of YouTube took 45% of the charge. Well, after 2 days, 20 hours of idle, it still had a 26% charge. 68 hours of idling, and it only dropped 29%. That's pretty good in my book.
As for screen time, expect 4-4.5 hours of YouTube on auto brightness. With general web surfing and forum reading, expect 3-4 hours(closer to 3).