Stitchawl, that's not generally correct, any barrel connector PSU that gives 5V at +500mA should work fine... you may have found some that didn't but that is not the general experience for myself and most others on MR... I've never used a Sony charger, have a 3rd party PSP one that's fine, 2 spare PSUs from old powered USB hubs and several other 5V PSUs from various sources that work just fine with a 505... and current is not the deciding factor as devices draw the current they require, it's Voltage that's important with Sony's requiring 5V but perfectly happy with 500mA to 2A availability (and probably higher but I usually use a 2A PSU)
Problem is with later models (x50s) that don't have barrel connector socket and can only charge through the USB port... these need correct conditions on USB connector to work properly, usually the same as on phone chargers that use micro-USB... more info on various threads devoted to PSUs and charging.
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Originally Posted by Stitchawl
No. Even when the current is correct, it seems that the Sony will only charge from its own charger or one made for the PSP. I tried several different chargers when I first got my reader, and was very disappointed to discover that fact.
In the case of the solar charger I bought, it matches the PSP charger for numbers.
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