Question| A fake battery can ruin the psp?

[ronomessi]

A fake battery can ruin the psp? If it it, may it be specific kind?

[alpha]

apparently sony says so, but guess why...

i never heard of any psp damaged because of the battery.

dont worry.

[Nick255]

Presumably any battery that puts out more than 3.6 volts or a battery that explodes or melts due to a lack of safety features.

[l_oliveira]

They also have a pretty bad tendency to shutdown the PSP without warning, making you lose all your progress on games. It doesn't allow the PSP to go into standy mode with a little bit of charge. They cause the PSP to coldboot after the PSP turns off.

Basically, avoid fake batteries at any cost. They just fucking suck. Not only they can totally ruin your PSP system with leaks and explosions but they also fail to let the PSP know they're almost out of charge.

[unseenforces]

I've cracked open a few "OEM" batteries. They don't have all the right chips in them. They have just enough to fake out the PSP.

They do make the PSP shutdown without warning when they are low, since they don't have the right signal to the PSP from the missing hardware.

You can loose gamesaves, since it could shutdown in the middle of a save and corrupt it.

Also, normally you cannot put them into service mode for modding. Their battery ID is read-only software wise, and I haven't had any luck hardware modding most of them.

[cory149]

unseenforces:
The problem I found with the fake batteries is simply this... when the current/voltage level gets too low the processor they use to "fake out" the PSP does not operate, basically they are not tolerant of low levels and do not deal with that situation as it happens properly (by giving a low power warning and halting the PSP).

The main damage from these batteries that $ony has likely had to deal with and does not like dealing with is likely random power downs while the PSP is dealing out NAND writes (flash1 gets written at least once every boot up/power down/suspend), which when done incompletely will give you a blue screen on next boot and essentially a bricked PSP.

By incompletely I mean basically...
When data is written to the "virtual" disk in nand (it's actually a partition), basically what happens is the original block containing the data is erased and the new data is written with the original logical address of the now erased block. Registry takes a few blocks (a block being 16KiB) and if a block is ever incompletely written or the new logical block is never put into NAND then you'd get a corrupt file and partition.

[l_oliveira]

Oh really, Cory ! I didn't thought of that possibility ! Indeed they might even brick the PSP depending on when they run out of power.

And I've heard of people bricking because the PSP got disconnected from power at the wrong time (quitting a game or in middle of a normal shutdown)

But I never put much thought on that.