Re: Gruber Batteries
There is no "recommended" battery but bigger (in terms of Amp/Hours or reserve capacity) is always better. You cannot go too large with troller batteries, just too small. My recommendation is to always buy the largest capacity deep cycle battery your budget and boat can stand. That means a group 27 is the smallest I install in any of my boats. Because of space considerations, you may be limited to a group 24. But always compare the reserve capacity when comparing batteries. One group 24 battery may have 100 minute reserve capacity while another may have 115. You want the larger capacity unless it happens to be a very cheap battery. You may find that cheap batteries require more frequent replacement and since you need three -- spending a little more up front may save money over the long haul.