What size battery urs4

[bluequattro]

What is correct size battery for an s4 please?
Gsf don't list the car and battery that came with it is wrong
Cheers

[s2_wot]

J0J battery 300 A (63 Ah) in the urS6 according to the build tag on my old one.

http://www.s2forum.com/forum/showthread.php?t=48338

[UrS4boy]

C4 UrS Battery Information (hold down PNs and comments about height and venting)

What is correct size battery for an s4 please?
Gsf don't list the car and battery that came with it is wrong Cheers

Our C4 UrS-cars have the battery located under the rear seat. To access the battery, you need to remove the rear seat by removing the two large black Phillips (+) head machine screws. Lift up the seat (disconnecting the seat heater connectors, if you have them) and you will see something like this (except without the tools in the footwell):



The above was taken during the fuel pump relay DIY and the battery is missing the Positive (+) terminal cover (Item 4 below). That cover is normally there - just off during the relay install. The piece of tape on the battery has the radio code on it (which you need after you disconnect the battery). C4 UrS-car fires have resulted from the rear seat frame grounding on the (+) terminal.



A variety of brands make batteries for our cars, e.g. OE Autobahn, and in North America Sears Die Hard, Autozone Duralat, WallyMart, Johnson Controls, Allstate, etc. The battery *should* be a Type 41. A couple of things are important:

1) height not higher than about 6 5/8" otherwise the terminals are more likely to hit the bottom of the seat and/or the Item 3 (above) hold down clamp won't be long enough.

2)the battery has to have a vent to which you can attach the OE vent hose (Item 5 above)(or equivalent), which is directed through the Item 7 grommet to the outside (underneath) the car. Not running this vent hose = acidic fumes and hydrogen gas in the inside of the car. Not a good idea.

Jumping the battery is a bit risky. There have been damaged ECU's as a result. Jumping, if you have to, and trickle charging can be done from the engine bay, without even seeing the battery: There is a ground (-)post beside the right hand side strut tower and there is a positive (+) under a black plastic cover on the engine bay cowl. If you don't have a (-) ground post by the strut tower, ground the cable to the engine lift lug or one of the strut tower bolts.

[bluequattro]

Thanks for the info guys
I ve taken a battery off my other quattro for now, it fits, starts n has hole for vent pipe so I'll be
buying same again

[spink]

defo make sure the battery isnt too tall as the metalwork on the bottom of the seat presses on the cable and eventually starts cutting into it which in turn can set the carpet alight which it did on my a6

[bluequattro]

I thought about that and plan on getting a fibreglass lid from a race box or making similar

[UrS4boy]

I thought about that and plan on getting a fibreglass lid from a race box or making similar

Overkill. Just get a battery that is the proper height (not too tall) and comes with a cover for the (+) post.