Last week, I completed a software update on my phone and since then the battery drains extremely fast and when I go to charge it (no matter what charger I use), it says "To charge faster, use the original charger." I have tried 4 different chargers. I have emptied my cache and done the Verizon health check. I have not downloaded any apps (have even tried deleting many of them) and have not changed my usage. My battery drains fully in a matter of hours and I don't know what else to try. Any help is appreciated.