Battery link

[27 TUG]

Want to link 2 batteries together what size cable do I need do I need to fit a fuse and what size thank you

 

[Carpmart]

Want to link 2 batteries together what size cable do I need do I need to fit a fuse and what size thank you

How big are the batteries, how far apart are they and how much load will you draw?

 

[27 TUG]

Hi they are 110amp about 3ft only TV charger for phone LED lights they are wet batteries thank you

 

[pappajohn]

Use the same size wire (minimum) as already connected to the single battery.
Put a 15a fuse at BOTH ends of the positive link wire.
The fuses are to protect the link wire, not whatever load is applied.