Len,

You can get an A-H meter for the boat which is a better gauge of available
charge than using a the typical voltage meter.  With this you can get a
feel of health and performance by using the batteries as normal and
tracking their accumulated A-H  to voltage.  You'd probably want to keep an
ongoing graph to identify future outliers.  It's not perfectly accurate.
As an addition or alternative you can get a load tester.  It will have to
be something that provides a regulated test current, usually capacity
divided by 20 (C/20). A 100Ah battery would need tested at 5amps.
Typically you only go to 50% discharge (11.6v), so an auto shutoff is
prescribed for the most scientificly accurate tests.  Be advised that under
these conditions the test on each battery will take ~10 hours.

Check out the Computer Battery Analyizer.  I have one and I'm impressed.
Very informative and powerful tool.

http://www.westmountainradio.com/product_info.php?products_id=cba4

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD


On Feb 6, 2017 2:24 PM, "Mitchell's via CnC-List" <cnc-list@cnc-list.com>
wrote:

Here is one for you electrical guys, my batteries are over 5 years old. I
have all LED lights, a 240 watt solar panel and modern refrigeration. The
batteries are working fine but there is no way they are still performing as
new. I would like to monitor their amp hour capacity as they age. Is there
a simple way to do it or do I need to take them into a battery shop?
90 days to launch!
Len Mitchell
1989 37+
Crazy Legs
Midland On.


Sent from my mobile device.

_______________________________________________

This list is supported by the generous donations of our members. If you
wish to make a contribution to offset our costs, please go to:
https://www.paypal.me/stumurray

All Contributions are greatly appreciated!
_______________________________________________

This list is supported by the generous donations of our members. If you wish to 
make a contribution to offset our costs, please go to:  
https://www.paypal.me/stumurray

All Contributions are greatly appreciated!

Reply via email to