Originally Posted by Capt.Bill11
Batteries because of the heat. Filters, I can't see much advantage. Unless they are in a space that is out of the engine room but isolated from the rest of the interior of the vessel.
Battery proximity to the starter trumps locating the battery "far away" IMHO. My 8D starting batteries may be overkill but they still have plenty of Oomph at say 120 degrees (which they have never seen in the PNW). Our house bank batteries are located low in the bilge on the air inlet side and seldom get above 90 degrees.
FFDs blanket statement is certainly open to debate and for good reason.