Dimensions of battery box on Vega?

[Vega1447]

Hi all.

My 2 X 75 Ah batteries need replacing.

I measured the approx size of the old batteries (26.5cm X 17.5cm) but
forgot to measure the height..

To save myself a 50M round trip can anyone advise as to the max battery
height that can be accommodated in the battery box/compartment?

Thanks

John
V1447 Breakaway