Hi,
I would like to install a racing battery on my Sapphire track car.
(stock battery is approx 16 kg.)

I hesitate between 2 models :
type 30, 26A/hour, 250x97x156, 9 kg.
type 40, 38A/hour, 250 97x206, 12,5 kg.

With my low comp pistons, I suppose type 30 will be OK to start my engine.

Any experience ?

Thanks.
Claude