Can anyone help identify this charger?

[Guyver79]

Hi 

my uncle recently died and we are going through his things, I have come across a charger for a radio I believe. It’s a Varta fast charge unit British army late 80s early 90s. I have contacted Varta to see if the can identify it but got no further forward. 
 

• It was made for the NATO force
• The greenish color represents military equipment
• The charging unit is not complete (see empty cable compartment on the left)
• The strain relief on the charging connector is missing
• The power plug indicates an English (GB) version
• Almost all military chargers were manufactured in Hagen (for lead and NiMH batteries) à the company no longer exists

if anyone can shed some light it would be appreciated.