Using a Ice 35 7AH battery to operate a Helix 7

[Ratherbfishing]

So...I am thinking of going ice fishing in Wisconsin.  I have a Humminbird Ice 35 flasher AND I have a Helix 7 fishfinder (the non-portable kind).  My intention/hope is to use the GPS and a Lakemaster chip to "begin the quest" and then use the flasher after I've drilled holes.  I don't, however, want to have to lug around a second/heavy 12 volt battery to operate my Helix 7.  My question is this:  If I run them separately (one at a time), can I use the Ice 35's battery to operate my Helix 7?

[J Francho]

Should be fine.