Im adding an amp and some extras to my 'toon and Id like to add a second battery on the cheap.
Im going to run 2 pair of 6X9's and a 2-10 or 2-12's in a box and maybe 500w for the whole thing. Whats the best senario for this setup:
1) Install second 12v battery isolated from original battery-shore charging the stereo battery when docked.
2) Install second battery 12v wired to original battery.
3) Install second battery with Perko-knowing the charging system on a smallish 4 stroke OB is probably pretty weak for keeping both batts up.
Thanks in advance