trojan battery cycle [RE-wrenches]

[William Miller]

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Friends:


I have been monitoring a 1 year old set of IBE 85N-33 batteries in a quad 
stack Outback system we installed.  With factory settings for EQ duration, 
the bank EQs in 2.5 hours and leaves the specific gravity well below full 
charge.  We are now setting the EQ and the absorption duration for minimum 
3.0 hours for L-16 systems, and we will longer for large form batteries.

Has anyone else monitored short charge durations for the EQ and absorption 
on Outback equipment?

William Miller


At 08:05 AM 2/13/2008, you wrote:

>I have heard this from others and it always makes me curious as my 
>customers easily get 8 to 12 years out of L-16s. Perhaps it is common for 
>some L-16's to not get fully charged after use? I tend to set the charge 
>controller a bit on the high side and now that the MX-60 has an auto 
>equalize option, I set it up to EQ once a month and tell the customer to 
>judiciously watch the water levels. As long as they do not go dry, these 
>batteries seem very robust for off grid and on grid w/ backup use.
>
>Todd


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