Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 05-03-2015, 13:22   #16

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 12,083
Re: Shore power charger

Factory calibrated Fluke is a good start.(G) Typically calibration is pretty simple. Connect meter to calibration source, turn trimpot inside meter until the numbers match the calibration source, generate the paperwork while sealing the meter back up.
Obtaining a reliable calibration source is the tricky part for us cheap folks who don't want to pay Fluke or others the $$$ for calibration. Using a "reliable" battery (i.e. fresh silver coin cell) or measuring voltage drop on a reference diode, etc. all are a bit less reliable, and if you really want to test the "20.00" volt scale, they're just not a good fit.
I broke down and made a ten-volt reference source a few years ago. A precision source, a couple of bits, and of course, the crucial miniature Altoids tin to house it all.(G) Any time a meter doesn't say "10.00" when it is hooked up, I know there's a problem. Net cost, about the same as the two-way postage to send one out somewhere.
You want some fun, compare a Horror Fright "free with" meter to your Fluke.(G)

hellosailor is offline   Reply With Quote
Old 07-03-2015, 13:08   #17
Registered User

Join Date: Mar 2012
Location: On board in Alanya, Turkey
Boat: Hunter Legend 420 Passage
Posts: 532
Re: Shore power charger

Carefully consider what size you need!

Battery manufacturers like Trojan recommend a charger size that is 10-13% of the bank capacity. For faster charging, especially when using a generator, most other manufacturers recommend a maximum of 20% of battery capacity. You should also allow 5% for house loads, so for a 400 Ah bank the charger should be rated at 100 amps.

The OP is suggesting AGMs, and Lifeline recommend a MINIMUM of 20% of the bank capacity. AGMs will accept high charge currents, so to maximise their extra costs then a higher rated charger would be better.

Unfortunately Sterling chargers are only 60 amp, but they do say run two in parallel. So 120 amps would be a good option for the OP.

There are 120 amp chargers available, like the Victron, where all the parameters can be programmed, including equalising times and maximum current settings.

sailinglegend is offline   Reply With Quote
Old 07-03-2015, 13:17   #18
Senior Cruiser
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,043
Images: 12
Re: Shore power charger

Originally Posted by hellosailor View Post
As to lithium batteries...I don't think you can buy any retail charger that has any accommodation for them.
We have owned Outback and Victron chargers that are completely user-adjustable to any charging profile one wishes.



You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote

charger, shore power

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best way to troubleshoot shore power > batter charger? solecollector Electrical: Batteries, Generators & Solar 4 05-06-2013 10:36
shore power charger as isolation transformer jaed Electrical: Batteries, Generators & Solar 0 23-06-2012 03:14
For Sale: Shore Power Inlet, Battery Charger, A/C Panel pressuredrop Classifieds Archive 6 22-04-2011 00:31
Shore Powered Battery Charger Location Captin_Kirk Electrical: Batteries, Generators & Solar 2 16-04-2010 04:20
Battery Charger, Shore Power and Generator? motion30 Electrical: Batteries, Generators & Solar 13 20-06-2009 14:02

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:01.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.