bigal.nz 59 Posted June 3, 2019 Author Share Posted June 3, 2019 Looks like before summer a new starter battery will be required The current one is a BP100-12 100Ah VRLA (2012 vintage). I am thinking of replacing with Victron 90Ah - like this: https://www.waveinn.com/nautical-fishing/victron-energy-90a-h-12v-gel-deep-cycle/136917205/p I think I can get away with 90Ah. Does this battery look suitable? Cheers AG Quote Link to post Share on other sites
Island Time 1,239 Posted June 3, 2019 Share Posted June 3, 2019 No. It's not a cranking battery. You want a battery with a CCA rating. Probably 750 CCA or so. Quote Link to post Share on other sites
Frank 157 Posted June 3, 2019 Share Posted June 3, 2019 What do you think would have caused this battery meltdown on the weekend Great if somewhat disturbing photo, looks like the reactor core went critical Quote Link to post Share on other sites
wheels 543 Posted June 3, 2019 Share Posted June 3, 2019 To add, Re sealed LA batteries, Gel batteries are not the best choice for boat use, even for deep cycle House use. AGM is the better choice. Gel is a type that is better suited for backup use, like remote power backup, where they remain fully charged for extended periods. Gel does not like high current discharge/charge which tend to be most boat house requirements. The Gel can suffer from bubbles of gas forming in it. AGM does not suffer from that, but is still a sealed battery design. Quote Link to post Share on other sites
bigal.nz 59 Posted June 5, 2019 Author Share Posted June 5, 2019 No. It's not a cranking battery. You want a battery with a CCA rating. Probably 750 CCA or so. Any recommendations on brand and where to get one IT? Quote Link to post Share on other sites
Island Time 1,239 Posted June 5, 2019 Share Posted June 5, 2019 PM Sent. Quote Link to post Share on other sites
bigal.nz 59 Posted June 8, 2019 Author Share Posted June 8, 2019 I think new battery could be on cards. I completely disconnected it 6 days ago 13.7v and today at 12.9. 0.8v in 6 days seems a bit much with no loads. The battery is 7 years old. Quote Link to post Share on other sites
Island Time 1,239 Posted June 8, 2019 Share Posted June 8, 2019 That means nothing. Fully charged lead acid is 12.8v after 10 hours rest. 12.9 is higher than normal. What matters is voltage drop with load for a cranking battery, or capacity for a deep cycle. Any battery place, even supercheap or repco, can easily test a starting battery with a CCA tester. Normally free. Quote Link to post Share on other sites
Priscilla II 392 Posted June 8, 2019 Share Posted June 8, 2019 I think new battery could be on cards. I completely disconnected it 6 days ago 13.7v and today at 12.9. 0.8v in 6 days seems a bit much with no loads. The battery is 7 years old.Quite possibly after 7 years it is well due for replacement. Quote Link to post Share on other sites
bigal.nz 59 Posted June 9, 2019 Author Share Posted June 9, 2019 Right - well I will get it tests before I replace it, but given its age, and that the battery monitory was showing 1 red bar, I think its pointing to it being stuffed. Quote Link to post Share on other sites
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