I bought a small trickle charger/conditioner from Argos as I keep mine in the garage near the power. The end cables can be bolted under the battery terminals to make them permanent leaving a simple cable that can be routed to the end of the engine bay.

http://www.argos.co.uk/static/Product/partNumber/0383167/Trail/searchtext%3ECAR+BATTERY+CHARGER.htm

Did anyone mention photos ?

Welcome

Everyone loves a Morgan. Even me, unless it's broken again.