"During World War II, the Electric Storage Battery Company was a major supplier of batteries for U.S. Navy submarines and primary contractor for batteries used in the Mark 18 electric torpedo" this came from wikipedia. I do not know if canadains used these tho. Could of been used in sherman tanks maybe found this on the web "The Sherman ran on a 24-volt DC electrical system, with a power take-off from the main engine driving a 24 V, 50 amp main generator. An auxiliary generator unit - a 30 V, 1,500 Watt generator driven by a one-cylinder, two-stroke, air-cooled fuel fired engine - was located inside the tank. Known as "Little Joe" to US tankers, Canadians referred to it as a Homelite. It was used to charge the Sherman's batteries (two 12-volt batteries, wired in series) when the main engine could not be run, or when the main generator's output had to be supplemented, such as when the radio or power turret traverse placed a heavy load on the batteries.22" Found on this website h t t p://w w w.canadiansoldiers.com/vehicles/tanks/shermantank.htm
