PSP homebrew coder Ac_K has released a nifty little piece of homebrew that lets PSP owners know a lot of useful information regarding their PSPs. Called PRXInfo, this plugin can display just how much juice is left in your PSP, your processor's speed, and other useful bits of info. Here's a more detailed list of features:

* Level of battery in %, Volts and remaining time
* Connected sector (Yes/No)
* Temperature of the battery
* Processor speed
* BUS Speed
* UMD in the reader (Yes/No)
* Activated USB (Yes/No)

For installation instructions, please read the readme file included in the download. There are two versions in the download below: one in French, and another in English. Just pick the one you want to use and read the corresponding readme.