Standard Battery Sizes - Wikipediahttp://en.wikipedia.org/wiki/List_of_battery_sizes
A "C" battery cell is 26 mm in diameter, BUT 50 mm in length.http://en.wikipedia.org/wiki/C_battery
There are 1/2, 3/5, and 2/3 sized "C" battery cells, some with Solder Tabs.http://www.batterystore.com/Sanyo/N3000CR.htm
YOUR SIZE, fits as a 3/5 "C" battery cell.http://www.powerstream.com/Size.htm
Battery Giant -- 3/5 C
3/5C-1100, Generic, NiCd, 3/5 C, 1.2v, 1100 mAh, Flat Top, 1 Pk
DO YOU HAVE A SANYO BATTERY NUMBER ?http://www.powerstream.com/NiB.htm
The Battery Store stocks Sanyo Ni-Cd batteries.http://www.batterystore.com/
Sanyo batteries was purchased by Panasonic.
The battery industry has quickly moved to Lithium and metal formulated cells.
Panasonic battery cataloghttp://www.panasonic.com/industrial/includes/pdf/Panasonic-Battery-Energy_catalog.pdf