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Might need to bridge the battery with a low watt bulb if the power fuse doesn't do it.
Take a small flashlight lightbulb, solder some wires onto it. Short between the pos and neg on the battery - you'll see the bulb light up, and then go dim when the battery is drained. Give your battery a full charge, and ouila - good as new.I've seen this happen when using usb to ac plug chargers - it keeps charging the battery after it's charged. The psp can't read how much juice it's got and reports that it's dead, and your battery just won't work until you drain it by shorting.
It's basically what you're doing - it's an intentional inaccurate circuit using a bulb in place of a resistor shorting it so you can visually see when there's no more juice.What would you call it?
It's not a random thing - it actually works. Your standard AC adapter will charge until it hits 100% and then stop charging - if you're using a USB to power plug adapter, it won't stop at 100% and your battery will appear dead. I'm sure there's other causes, but don't dog it till you've ran into a situation and tried it yourself.
Not the USB charge mod, a USB to DC plug charger will not stop charging the PSP at 100%.http://s.shld.net/is/image/Sears/05832385000_20100520080150507?hei=248&wid=248&op_sharpen=1&resMode=sharp&op_usm=0.9,0.5,0,
Wow, xdcan I also use a common LED?