1983 Euro 500sl: what size battery to buy?

[fornman]

Guys, this is my first post on this forum, and I’ve been searching like a madman.

I bought a relative’s Euro 500sl. It’s going to need some work, including a new battery. I bought a group 49 size, thinking that, if that battery fit a 380sl, it would fit this car. No dice. It’s way too big.

I got the part number for a Mercedes battery, and I could go that route. I’ve been searching through BaT for a closeup of a battery, but that’s slim pickings too. One of those car from the auction has an H5.

Can anyone help?