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#32
posted to rec.boats.cruising,rec.boats.building
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* Larry wrote, On 7/26/2007 12:36 AM:
Lew Hodgett wrote in news:1QTpi.12042$zA4.313 @newsread3.news.pas.earthlink.net: To replace 375 AH you will require 375/115 = 3.3 hours of engine time. A pipe dream of battery chemistry. 375AH requires 5 hours (from 50% discharge, not zero) at 38A, not 115. Batteries charge at 10% of AH rating, not 30, if you want to convert the electrolyte, giving it time for circulation. You've made this assertion many times, and its still completely false. Or possibly, I have magic batteries. I have 4 Trojan T-105's for a total of 450 Amp-hours. The 110 Amp alternator, controlled by a Link 2000R generally charges at about 90 Amps, slowly dropping to around 75. At that point, its around 80% full. Continuing to charge, it goes down to 50, when I figure its close to 90%. The first set of batteries last 6 years, and were really killed by a sever winter. The new set is on its third year. BTW, I don't have double belts, but I cook at least one year. |