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[Boditza]

My Battery just died tonight . Its installed by previous owner and its 70ah, but i'm not sure that is the right batt for my engine. I searched on many sites but i find that on my diesel 2,2 fits 72ah, 74ah and also 85ah. wich should i get?

[Shimmy]

I'd go with the 85ah.

Diesels need a bit more juice than petrol engines from the battery and are therefore bigger.  Biggest I could get for my car from Vauxhall was 66ah iirc which I bought about 2 months ago.

[Boditza]

i don't want to get a genuine gm because its pretty expensive, almost double.. will the 85amp fit?

[aaronjb]

Code: [Select]

Omega Batteries          Part Number        Retail      Trade      Trade Club

70 amp/hr (OE)        9201470       £83.00      £75.95      £58.46
 
2.0TD/2.2TD - 70 amp/hr      93189922      £64.50      £59.02      £52.09
 
2.5 V6 - 70 amp/hr      93189922      £64.50      £59.02      £52.09
 
3.0 V6 - 70 amp/hr      93189922      £64.50      £59.02      £52.09
 
2.6 V6 - 65 amp/hr      93189923      £64.50      £59.02      £48.23
 
3.2 V6 - 85 amp/hr      93197903      £97.50      £87.75      £69.13
 
2.5TD - 85 amp/hr      93197903      £97.50      £87.75      £69.13
 
2.0/2.2 - 60 amp/hr      93197905      £48.70      £43.83      £40.05
According to this, 70Ah for the 2.2TD (it lists 85Ah incorrectly for the 3.2 which - mine at least - has a 65Ah the same as the 2.6)

I don't know if the 85Ah would fit physically - the GM one is huge (it was in my previous 2.5TD); for aftermarket non GM you'll probably have to measure it and find one that fits the same space as they come in all manner of shapes & sizes..

[Kevin Wood]

As said, the 85Ah listed in Trade Club is huge, and won't fit a 3.2. I would take some measurements of the space available and note the type and orientation of the terminals and mounting brackets then go to your supplier and see what will fit.

A larger capacity battery isn't necessarily better as rarely does an engine start take more than a few percent of the total capacity. Cold start performance (CCA) is probably more important.

Kevin

[VXL V6]

Both of mine (DTi and 3.2V6) have the 70Ah in them if that helps. 

[Boditza]

thank you all for your replyes... i've searched and i got 70 and 85 amps so thats why i did not knew what to do. on bosch or varta both are listed, but now i will get a 70 amp, or 75 but first i'll need to see wich fits.

looking for 750minimum cca