SailNet Community - View Single Post - Ample Power vs Balmar vs Xantrex
View Single Post
  #6  
Old 02-11-2013
Faster's Avatar
Faster Faster is offline
Just another Moderator
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 14,627
Thanks: 68
Thanked 187 Times in 179 Posts
Rep Power: 10
Faster has a spectacular aura about Faster has a spectacular aura about Faster has a spectacular aura about
Re: Ample Power vs Balmar vs Xantrex

Quote:
Originally Posted by Maine Sail View Post
If you are trying to get to 100% with any alternator it is still going to take 10 hours +.. You will charge in bulk faster because you are not limiting the voltage when the alt heats up...

What you are looking to do with any alt is to cycle between 50% and 85% or so state of charge. If on a long motor run then you can get back closer to full but the bank will limit how much current once in absorption mode and this current limit will continue to decline until you are putting in less than 2% of capacity per hour...
Yes.. That makes sense.. But if I can remain in 'bulk' longer than a few minutes then we'll be much better off. As it is now we stop and shop every 4-5days and plug in to top up overnight with shore charger. If indeed we can recover 50-80 amps in a few hours of motoring I think we could lengthen that interval by a day or two.. or more... esp in areas where wind is a scarcity in summer.

We're looking at solar supplement too.. But one step at a time- no doubt like Maine we have areas and seasons where sun is less than reliable..

Thanks again
__________________
Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Reply With Quote Share with Facebook