hlev00 - If your battery box is for 2 X 4D and they are side by side you've got plenty of room. A 4D is about 21X8.25 inches. So side by side they'd be 21X16.5 in. A 6v like Trojan T-105 (or a similar sized battery) is about 10.3 X 7.1 . So if you put them side by side and then end to end the space would be 20.6 X 14.2 . If your box is for them to be end to end then I don't think they would fit.
Larry
Doh! I guess I should just measure the damn things. I was looking at the vendors spec sheet and my eyes slid up a line and misread the width.
hlev00 - If your battery box is for 2 X 4D and they are side by side you've got plenty of room. A 4D is about 21X8.25 inches. So side by side they'd be 21X16.5 in. A 6v like Trojan T-105 (or a similar sized battery) is about 10.3 X 7.1 . So if you put them side by side and then end to end the space would be 20.6 X 14.2 . If your box is for them to be end to end then I don't think they would fit.
Larry
They should fit but remember the 6 volt batteries are taller - about 11" depending on type of post.
you will be much happier moving many T-105's than one 4D.
Note. The distance batteries can be apart is limited by wire gauge and speed of light.
Wire size is limited by the connections that can be made on the ends.