So I know the mk2 breadvan correct battery is an 063.

Dimensions

175 (w) x 175 (h) x 210 (l) mm

I can categorically state that a type 096 will not fit, unless there's no bonnet hinge, and perhaps no bonnet as the battery tray space is not flat, limiting battery height towards centre of car.

(Had a good charged 096 handy)

But I think an 075 might just squeeze in.

175 (w) x 175 (h) x 243(l) mm

An 075 fits in the tray and bonnet will close with cables attached to terminals.

Specifically a Yuasa 3000 YBX3075, which is sealed maintenance free model.

60Ah capacity and 550 cold cranking amps.

Weighs 14.4kg, so more than 063

eg Bosch S5001 which is 13kg.

But I need to check if the rain tray feeds water onto the +ve battery terminal.

It's sealed battery so it won't get diluted electrolyte, the bain of Porsche 914 ownership.

The scuttle tray stops any rain water from dripping on the +ve terminal of the wider 075. It has a lip at the edge and a gutter channel in the plastic.

And the 075 managed multiple failed start attempts in damp weather. My Dellortos don't have a choke, they have an auxiliary cold start circuit that can be set so rich it will foul the sparkplugs with soot, so you can have a fires then dies game of chance (in warm weather it'll start and idle using the pump jets).

I suspect refitting the radio on standby killed the previous Bosch S3 after 7+? years.

Going to fit a Bluetooth battery monitor.

And maybe an LED interior light.

i went for an Exide 50ah, on my MK2 86c. It's the same battery i found on the car, marked VW.

In my updating process, i used a little circuit from Aliexpress which test voltage, start power and alternator charge.

It works via an app and has also google maps feature, while recording trips.

It worked fine on my GMC Sierra and i bought another one for the Polo.

Now, drainage is under control!

https://it.aliexpress.com/item/1005009455687043.html?spm=a2g0o.productlist.main.2.71ad35b3unGoHT&algo_pvid=4a386e11-e8a8-4e8a-a908-f061876dc78b&algo_exp_id=4a386e11-e8a8-4e8a-a908-f061876dc78b-1&pdp_ext_f=%7B%22order%22%3A%221726%22%2C%22spu_best_type%22%3A%22price%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21EUR%2151.20%2125.09%21%21%21398.13%21195.10%21%40211b628117740822965348799e284f%2112000049157822285%21sea%21IT%21131144985%21X%211%210%21n_tag%3A-29919%3Bd%3Ab9d13df2%3Bm03_new_user%3A-29895&curPageLogUid=ck7W5LgM4HGW&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005009455687043%7C_p_origin_prod%3A&tblci=GiAZLHC9rRhy-B_6P0uxYCRJ10wRxvSvCfiv3otbrOMW4CCnqXUoy6rzmJbYn5_-ATD_lVc