while I'm at it I always find it amusing that these diagrams show the engine battery at a higher Ah than the ancillaries...but that's another thing entirely.
duncan,
out of interest how should they be shown ?
it was interesting with grahams optima that it was only 50 a/h but has a cca of 800 for a weight of 17kg against a normal heavy duty battery 140 a/h with 760 cca for a weight of 35 kg.
thanks,
andy