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Tiara Open Need to replace 6 Gel Batteries. (3 house & 3 engine) - 38 Open w/450 Cummin's
#2
I like to overshoot when it comes to batteries just in case (or more like when) I do something stupid and need to lean on the starters for a while. But I think the group 27's will work for the engine bank. Cummins 450 6cta specs call for 1560 MCA, 1250 CCA for cold start and a minimum 480 minute reserve (assuming 12V system). If you spend a lot of time at anchor and or invert off the house bank that might suggest the group 31's or larger. M2C

Btw that pretty amazing to have any battery last that long, let alone batteries that spend their life turning over diesels.
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RE: Need to replace 6 Gel Batteries. (3 house & 3 engine) - 38 Open w/450 Cummin's - by jclark003 - 05-20-2020, 09:28 PM

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Need to replace 6 Gel Batteries. (3 house & 3 engine) - 38 Open w/450 Cummin's00