Howdy
For sale I have 2 extra, new in sealed original package Aiwa PB-S5A batteries. This RARE battery can be used for the HS-PX1000 and other similar models. Unfortunately these were not cheap, but I'll offer them to the group, pre-ebay, for $45 each ($5) shipping in the USA.
PM me if interested.

Nah

My HSPX1000 does work on 2 ikea aaa batteries also,
10 for €1.50

yeah nicolle, but the PX 1000 looks WAY cooler and smaller when you don't have that bulky, black AAA battery pack hanging off of the side....