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Post Info TOPIC: Testing House Batteries
goldcoaster


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Testing House Batteries
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I have 3 x 120ah Batteries probably 12 - 18 mths old , how do I test them too make sure they are all working evenly and that 1 isn't labouring.

Just recently purchased this Motorhome and it has the Drifter Pro Battery monitor showing me the status of the Batteries. Does this system read all 3 Batteries or only one battery. confuse

Thanks

Mick



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Totalrv


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The monitor would be on all 3 as a group and you would need to check each battery disconnected with a battery load tester.

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goldcoaster


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Thanks Totalrv , I thought that. I might get them checked out by a autoelec , because I think something is wrong , either the Batteries or the Monitor . Thanks again . I noticed you are at Tweed Heads whereabouts , you could pm me if you like.

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Treecrest14


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Good article on this website re "Trouble shooting Batteries"
www.aussiebatteries.com.au/blog/how-do-i-troubleshoot-solar-and-battery-problems/


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Glen

 

A diesel Nissan Pathfinder towing a Coromal Element 542.
Peter_n_Margaret


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A battery load tester only tests cranking capacity and is not relevant to cycling batteries.
After fully charging, disconnect them all and place a known wattage load (like 50W a headlight globe) on each and record the time and voltage every half hour over at least 10 hours or until the voltage gets to 10.5V.

Cheers,
Peter



-- Edited by Peter_n_Margaret on Monday 12th of January 2015 09:29:35 AM

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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
PeterD


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Peter_n_Margaret wrote:

A battery load tester only tests cranking capacity and is not relevant to cycling batteries.

A battery load tester will not test the battery capacity but it will show up an ailing battery.



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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
Retired radio and electronics technician.
NSW Central Coast.

 
SnowT


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Peter_n_Margaret wrote:

A battery load tester only tests cranking capacity and is not relevant to cycling batteries.
After fully charging, disconnect them all and place a known wattage load (like 50W a headlight globe) on each and record the time and voltage every half hour over at least 10 hours or until the voltage gets to 10.5V.

Cheers,
Peter



-- Edited by Peter_n_Margaret on Monday 12th of January 2015 09:29:35 AM

 Peter are you seriously telling people to drag their batteries to 10.5v for a damn test.....   you going to replace them....????

10.5v is dead flat and you might as well just disconnect them and send them to the recyclers..

 

Juergen



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Peter_n_Margaret


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SnowT wrote:

 Peter are you seriously telling people to drag their batteries to 10.5v for a damn test.....   you going to replace them....????

10.5v is dead flat and you might as well just disconnect them and send them to the recyclers..

Sorry, but the standard tests for battery capacity take them down to 10.5V and doing so will not do them any damage.

Check if you wish.

Doing so on a regular basis will certainly shorten their life. A big difference.

 

Cheers,

Peter 



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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
Gus1949


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Jurgen

You make valuable contributions to this blog site and people appreciate your participation. When contributors post advice you disagree with there are nice ways to correct them and not so nice ways. Don't diminish peoples respect for you by making blunt and offensive posts.

Keep up you valuable contributions. 



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