Power save features are built into alot of roms. Sure that could save some % of your battery but imagine if you turned on powersave AND used my method. WHOA, youd have so much battery!My recommendation is to use the Juice defender app
no prob; thnx meter if u like itVery practical and inexpensive! I use my phone as my main alarm, so I normally charge while on.. but this technique will keep it charged at the right time of the day. Thank You!