extend F150 battery canles

[gct]

I need to extend the battery cables on my 2010 F150, by about 4 ft. I plan on using a terminal block to make the connections. What size wire do I need?
Thanks,
Gary

[rodbolt17]

for 4 feet, #4 will suffice.

[gct]

Was out of town, didn't get a chance to respond...

Thank you sir, appreciate it,,