159 2.4 20007 plate
19,500 DPF/EGR by
AO Silver Member
Join Date: May 2009
Location: United Kingdom
+1 if your car starts normally without lots of warning lights then it's probably charging circuit.
However don't forget the absolute basics. Start with remove, clean and refit battery connections and all heavy fuses on top of the battery.
After that as above.
With regards the battery for your car there are standard classifications for batteries.
European specs yours should be an 027 however the battery tray in a 159 will take a 096 (heavier duty fitted to their diesels and V6s) or even a 115 (heavier again) will fit but is not original specification by Alfa but has masses of reserve capacity.
However, Australia uses DIN specs for their batteries and having done some checking I think the conversion is below.
Depending on make and what spec you get for each of the above the capacity for each is as follows with the higher capacity and higher CCA of each being almost 50% more expensive than the basic battery in the same spec:-
027 = 60 - 65Ah and 480 - 550 CCA (AU spec DIN53 and L W H 240 x 175 x 175mm some = 190 high)
096 = 70 - 75Ah and 680 - 780 CCA (AU spec DIN75 and L W H 280 x 175 x 175mm some = 190 high)
115 = 80 - 85Ah and 750 - 820 CCA (AU spec DIN88 and L W H 320 x 175 x 175mm some = 190 high)
If you search the web using a UK search engine (Australian search engines don't seem to find much about batteries) on "battery 027", "battery 096" or "battery 115" you can spend hours reading on prices and specifications and that's before you get into the latest AGM technology.
It's a personal opinion but if you are looking for a quality battery that will last use a leading brand Varta, Yuasa, etc. If you then want even better quality each of the size (096 etc) will have at least three quality ratings rather than pay for higher quality in the same specification battery I prefer to fit the next size up battery.
Last edited by kandlbarrett; 14-07-12 at 12:41.