Jmac572
Active Member
- Dec 20, 2016
- 212
- Boat Info
- 2004 Sea Ray 390 Sundancer "Freedom"
- Engines
- Twin Mercury 8.1
Hi everyone... On a new-to-me boat I have four batteries connected in parallel on two banks. The prior owner has a group 27 and a group 31 on each bank (below). The manufactured dates are 3/21 on the 27's (Duracell) and 7/20 on the 31's (Odyssey), the PO never did work himself, the marina always did it so this was very likely them. I always thought that batteries on the same bank should be the same type/age, should I move these batteries so the Odyssey's are on one bank and the Duracell's on the other or is this a design from Sea Ray? It's a 2004 390 Sundancer w/ 8.1's. (and before anyone mentions it, the batteries/engine bay is MUCH cleaner and de-scaled since this photo was taken during survey)