[GSlavens]

I have a 1999 Mariah Z222 Shabah with a 1999 Mercruiser 250 hp 5.7L V8 engine. The battery that came with the boat is dead (or close enough to it), and I'm not even sure it was a good match to begin with. What would have come with the boat originally? Any info on CCA, MCA, reserve time, etc.?

Thanks!

[aquaknot]

my original set up used two Trojan deep cycles. Currently I'm using mercruiser batteries which work fine. I still have the trojan batteries and can check the specs next weekend unless some one else knows

[ShabahZ250]

Is it a MPI engine? Last year when I was in the shop, I got a copy of a memo that said Mercruiser now recommends a minimum 750cca battery for use with the MPI system.

I went to the local wal-mart and bought two Everstart Marine batteries (group 29). $79 each, and a replacement warranty! At that price you can't go wrong.