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Old 11-25-2010, 05:05 PM   #45
elcreative
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Posts: 2,888
Karma: 5875940
Join Date: Dec 2007
Device: PRS505, 600, 350, 650, Nexus 7, Note III, iPad 4 etc
Why 2-3 full charge/discharge cycles... not recommended for lithium batteries (and that's from the battery manufacturers).

Have you ensured that mp3 playing is no longer active... been known to discharge very rapidly.

Why charge for ~1.5 hours until red light goes out if having problems... this only indicates 80% charge at max (see manuals & Sony website)... if it's charging from USB then it won't discharge by leaving it connected after red light goes out UNLESS you switch computer off or have it set to sleep/hibernate.

Try PSP charge for at least 4-6 hours, ignore red light going off, you can't overcharge as it will stop charging when full (built-in battery function). I always charge mine overnight while I'm asleep from a mains PSU... If all else fails then try the battery disconnect/reconnect and/or replacement


Quote:
Originally Posted by healton View Post
Hello. I've got serious problem with battery, almost can't use reader. I bought it 2 month ago, did 2-3 full charge/discharge cycles (except charging while copying books), lifetime was about 2 weeks. Two weeks ago i started to use device only for audiobooks for a week, until i've found reduction of lifetime from 3 days (using player) to 1 day, so i stopped listening and deleted all mp3's. But lifetime still was reducing quickly to a hour of reading (100 pages). Moreover, after full charge, when i disconnected USB, it showed immediately 3/4 battery, now it's only 1/4 just after disconnect. Charging (red light) still takes ~1.5h, i disconnected just after red light is over, so there was no drain by USB cable.
I formated memory, removed SD, cleared settings, reinstalled firmware, tried to charge via PSP adapter, but all of this have no effect. Now after full charge and 10-20 pageturns i get "low battery" message, and 100 extra turns before shutdown. I'm thankful for any ideas.
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