It's only possible to turn on your PSP with an adapter for the PSP or a battery for the PSP.
You can't update a psp without a working battery. It'll state that the battery is low and you need to charge it.
You can only get cfw without a Pandora if your psp is firmware 5.03 or lower and you use the program chickHen to do so.
Get another battery. You should of had backup files on your PSP battery.
definitely no the best u can downgrade without a Pandora battery is 3.03.... what you can do is use the Pandora battery to downgrade and the results will be great I've done it on my psp and when i downgraded my psp i got to download as many games that can fit into my psp(full games of course) so downgrade your psp using a Pandora battery:)
You can run a PSP without it having a battery, it's not very convenient though. It will only operate while it has the charger in.
No it cant.
Apart from a chance that the battery may get knocked out of place and make the PSP switch off, nothing special will happen. The cover is there to keep the battery in place - if it's not there, the battery may get dislodged.
Yes ! If you have a PSP 1000 (fat one) like me If you don't have a battery just plug in the charger and it should work.
A PSP phat battery will work in a PSP slim and lite, but bear in mind that a phat battery is deeper than a slim one, you will not be able to close the battery compartment using the origina battery cover.
lots
A psp normal battery is a power device that is used specifically to power the device.A Pandora battery is a half battery that you use primarely to either: get into your psp hard drive, downgrade your pap, or enable your psp to put custom formware on it. Hope this helps!