photo sharing and upload picture albums photo forums search pictures popular photos photography help login
Type your message and click Add Comment
It is best to login or register first but you may post as a guest.
Enter an optional name and contact email address. Name
Name Email
help private comment
Compass Marine How To | all galleries >> Compass Marine How To Articles >> Alternators & Voltage Sensing - Why? > Help Support This Site
previous | next
Help Support This Site

Help Support This Site


Like what you saw or read in this article? Was it helpful? Could the information save you some money? Would you like to see more articles like this?


If so feel free to donate, support the site, and keep it growing. Please DO NOT feel obligated at all. If you like it and want to make a donation, please do. Your donations help keep the content coming and also help keep it FREE.


Click the DONATE button below if you would like to make a donation via PayPal.







other sizes: small medium original
previous | next
comment | share
George Giggey 29-Jan-2015 12:19
I was surprised to find that there are so few US flooded lead/acid 12V battery manufacturers and how much relabeling that goes on. I am led to believe that Johnson Controls, Exide, and Deka control the most of the market. Have you found any data on the actual percentage of the market that each controls and the selling brands associated with each of these major manufacturers? I have had good luck with Delco and Sears deep cycling batteries and believe that both brands are sourced from Johnson Controls. Do you think that the major selling brands switch manufacturing sources on whim or price or do they stick with their trusted suppliers?
Compass Marine How To28-Jan-2015 16:16
Sailerhlf,

Look for an article in Practical Sailor later this year. It will include PSOC testing (partial state of charge operation) of the new Firefly Oasis marine version as well as other AGM batteries..
sailerhlf 24-Jan-2015 23:48
Have you ever tested the new 3HD2 that Cat started to develop and (go to)http--fireflyinternationale brought to market? The boating community needs verification of this new led acid battery. sailorhlf@gmail.com
Lee 22-Nov-2014 22:14
Thank you for the step by step instructions...Do the head to exhaust manifold gaskets or the rear manifold gasket need any type of sealants?
Guest 13-Nov-2014 06:36
I wish they had found a way to design a female cord-mounted end with some sort of self-actuating waterproof cover so that when it falls in the water you don't end up with a connector full of saltwater.
Don Joyce 11-Nov-2014 23:38
I've found the best mechanical/electric gauges are made by Rochester Gauges in Dallas. Moeller etc. use their components if they don't simply relabel them entirely. You don't get the el-cheapo aluminium float arms that you get with Moeller. Worth checking out. I got gauges with the ASE 5-bolt pattern for both fuel and water. (the Moeller gauges would simply dissolve)
Nico 04-Oct-2014 09:27
I discovered your site as, having just re-engined my boat, I want to upgrade the batteries, charging, monitoring and add solar panels.
I have found your information and explanations extremely helpful and valuable. Thanks very, very much.
I was already considering a Smartguage but, as I am located in UK, I will buy it locally but have provided a donation instead. Thanks again !
Richard Ross 01-May-2014 16:26
Certainly the SmartPlug is an improvement over the old, but would a SAE J1772 plug be even better. This is the plug used to recharge electric autos at 30Amps. I have never seen one on a boat.
Freddie Estremera 01-Apr-2014 01:09
As always Mainsail, thanks again for your thorough input on this...I always recommend you to others and have followed many of your tips while working on my old boat, a Tartan 27 and also will implement these theories on my new boat, a Tartan 34c!
Robert Murdoch 05-Jan-2013 16:05
Great site, I hope my donation as small as it was helps, I will donate more when I do one of the project outlined on your site.

Sites like yours are great for content and detail you will never seem to find on a commercial site.

Nice work.

Robert Murdoch
Captain of "Old Flat Top" Cal 28
Toronto, Ontario