hi Barry,
Since your posting on HMVF regarding your battery trolley, or "trolley acc" as it was known in the RAF, I have come up with a website regarding the charging set that they carried on them. I mentioned the charging set at the time, powered by a JAP 2A engine.
Go to the following website and you will see quite a bit of details on the trolley acc as well. Hope it is of use.
http://www.northernworkshop.pwp.blue...tructions.html
Richard