Bruce Napier wrote on 21/08/2010 : > On 21 Aug 2010, at 09:41, Eno at Yahoo wrote: > >> Has anyone any idea how long in general terms it will take a normal >> sized alternator (50 amp) to recharge two 110amp batteries, and >> recharge the starter battery back to its pre starting level assuming >> it >> was fully charged before starting the engine. >> >> I know there are a number of variables that would need to be known to >> give an accurate answer, but just for general everyday type use and >> using normal levels of power, example:- TV for 2 hours, 2/3 (20w) >> lights >> for 5 hours and the water pump and 12 volt compressor fridge. >> >> As a general guide how long would you think the engine would need to >> run >> to replace the energy lost. > > > As you say, this is rather a "How long is a piece of string?" > question, but the short answer is, quite a while. 50 A isn't much of > an alternator by today's standards, and I'd have thought somewhere > between 3 and 4 hours. Certainly long enough that the start battery > isn't an issue. Assuming the engine starts readily, the start battery > recharges very quickly. > With an electric fridge 4 hours every 24 is about right, as Bruce said the started would be very quick and the domestics well on the way after 2 hours but its the last bit that takes the time.
-- Brian traveling on Harnser http://nbharnser.blogspot.com/ ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/canals-list/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/canals-list/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
