Anyone have a line on batteries for the NLS portable oscilloscope?

[Ethan Dicks]

Hi, All,

The topic of replacement batteries came up in the Yahoo Group
for the RB5X, and someone posted a link for 2 volt 2.5 Amp-hour
cells (which are apparently used in an older version of the robot
than mine)...

<http://www.batteryweb.com/hawkersla-detail.cfm?Model=0810-0004&label=singlecell>

I saw the image and immediately thought of my NLS portable oscilloscope.
I'd love to refurb mine, but $45 in batteries is a little on the high
side for me.
Has anyone on the list replaced a set of this sort of battery, and does anyone
know of a place that stocks them for a bit less?

-ethan