Mk5 conversion - second or auxilliary battery?

[ake]

All autos had twins as standard, as did vans with factory extras

[triffic]

All autos had twins as standard, as did vans with factory extras

Ah, that would explain it. Mine's an auto, while the other person who I checked with has a manual box. His is configured as an auxilliary battery, and is not used as a starter battery.

I'm guessing that the reason to double up on an auto is not because they are any harder to start, but because you can't push start them.

[ake]

All autos had twins as standard, as did vans with factory extras

Ah, that would explain it. Mine's an auto, while the other person who I checked with has a manual box. His is configured as an auxilliary battery, and is not used as a starter battery.

I'm guessing that the reason to double up on an auto is not because they are any harder to start, but because you can't push start them.

Yeah I think that's it

[crazylegsvan]

so the two batteries I have must be cos its ex bt and has a diesel heater. would they both be starting batteries or would one just be for the extras?

[ake]

so the two batteries I have must be cos its ex bt and has a diesel heater. would they both be starting batteries or would one just be for the extras?

Most likely both for starting, but have a look at the wiring to check

[triffic]

As above, only checking the wiring will be conclusive, but if it's got a manual box (ex-BT means it will have) then it may well be an auxiliary battery, not a starter.

Take a look at the photo earlier in the thread - if you don't have that extra junction on the starter motor solenoid then it's probably an auxiliary.