VitaGAF HALP!
I'm playing DR AE and my Vita keeps giving me 'low battery' message at the top left, but when I press PS button to go to the XMB it appears my Vita has over 50% charge left.
What's causing this creepy message? I haven't had my Vita lock up on me yet but it's scaring me....
This issue is very annoying X(.
I've had this issue myself for a number of days already and while it is mostly resolved (when playing PS1/PSP games), its still an issue with Vita software

.
What happens is that the Vita's connection to the battery gets weaker over time (1000 models specifically), so this issue pops up. There are a few ways to fix this issue, but not all of them are solid fixes (meaning it will pop up again in the future).
-Drain your battery through playing games/watching videos, then leave the Vita be for 12-36 hours. Then charge it fully for 8 hours and see if the issue goes away (leave your Vita still for an minute and play a game for 30+ Minutes to see if it works). If not, do the following step below.
-Re-Build your Database; should fix the issue for first-time appearances but it will not fix it every time (in fact, it can make the issue worse, force-shutting down games if it hits 'Red' despite having a full/partial charge)
-Open Up your Vita; use a small screwdriver to open the six screws holding the Vita together. Then, you open it up and dis-connect the battery. Re-Connect the battery and close it back up. Should fix the issue for the long term (4-8 months)
-Send it in to Sony; they get your Vita, fix the battery problem, and send it back to you (make sure game/MC's are out of the system when you send it to Sony). People said it takes 2-3 weeks for Sony to fix the issue and send your Vita back to you.
Hope one of these helps your problem. Its an annoying one, but at least the battery issue isn't force-shutting down any of your games (I think?).