Now this is a rare one in my collection. Datel Battery Service Tool for PSP. Datel, a very nice and handy device that can convert your genuine PSP battery into Pandora battery
Pandora Battery & Magic Stick For Sony PSP – Resurgence Games
Pandora Battery for PSP - China Battery and Pandora Battery
Pandora Battery & Massive 64GB Magic Stick for Sony PSP UNBRICKER & System Tools | eBay
New Pandora Battery Tool Datel Lite BlueTool For Hacking PSP 1000&2000&3000 - Shenzhen SunQT Technology Co.,Ltd - ecplaza.net
I found my original Pandora Battery from ~2009 : r/PSP
Create Pandora Battery and Patch Firmware for Sony PSP : 4 Steps - Instructables