View Single Post
  #55   Report Post  
posted to rec.boats.cruising,rec.boats.building
Jeff Jeff is offline
external usenet poster
 
First recorded activity by BoatBanter: Jul 2006
Posts: 1,301
Default Amps, etc.

* 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.