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Old 06-03-2019, 06:11 PM   #21
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Default Re: Agile battery separator

Irvingj, thanks for the information on your battery and the lower voltage after 3 days. Like you said low voltage seems to raise havoc with everything from home electronics to vehicles and Sprinters seem extra sensitive. I'm letting all the batteries"rest" since they were charged yesterday and I plan to see what voltage they show today. If either or both sets of batteries voltage has dropped off, I need to chase it down. My battery charger is supposedly fully automatic with a indicator light that goes from flashing green when charging, to solid green when charged. Two days of charging at 10 A. the light still flashes which unnerves me.
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Old 06-03-2019, 06:16 PM   #22
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Default Re: Agile battery separator

BobLLL, I appreciate the information and troubleshooting tips, I'll see what happens today and post back what I find. I have to get my wife to help me with some things so I don't move fast but will post, thanks!
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Old 06-03-2019, 06:34 PM   #23
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Default Re: Agile battery separator

Quote:
Originally Posted by Inspector View Post
My battery charger is supposedly fully automatic with a indicator light that goes from flashing green when charging, to solid green when charged. Two days of charging at 10 A. the light still flashes which unnerves me.
These are high capacity batteries. I have a 12 amp charger and it takes a long time. If the battery separator is engaged, the charger is trying to charge the starting and aux batteries at the same time, a total of about 300 amp-hour capacity, and it takes nearly forever. Disconnect the separator if you haven't already. Check the voltage while charging - you may find it is hovering near 14.5, the usual cutoff for "car battery" chargers, but just can't get there. A considerable portion of the charge current is dissipated as heat as the battery nears full charge. I think anything over 14 volts should be good enough for testing purposes.
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Old 06-03-2019, 06:35 PM   #24
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Default Re: Agile battery separator

Quote:
Originally Posted by Inspector View Post
BobLLL, I appreciate the information and troubleshooting tips, I'll see what happens today and post back what I find. I have to get my wife to help me with some things so I don't move fast but will post, thanks!
I check messages at least daily, so do keep me posted.
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Old 06-03-2019, 06:47 PM   #25
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Default Re: Agile battery separator

BobLLL, thank you, I would be lost with the way RT and the Sprinter wiring are combined, especially with the manual overlooking the connection. I will definitely post my progress or lack of.
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Old 06-03-2019, 06:48 PM   #26
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Default Re: Agile battery separator

For those who are unfamiliar with the Sure Power Battery Separator model 1315-200 that Roadtrek installed from about 2007 to at least 2013, here is some documentation.
Attached Files
File Type: pdf battery separator.pdf (39.2 KB, 17 views)
File Type: pdf battery separator datasheet 200amp.pdf (213.5 KB, 9 views)
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Old 06-03-2019, 06:56 PM   #27
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Default Re: Agile battery separator

Thanks BobLLL!
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Old 06-03-2019, 11:34 PM   #28
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Default Re: Agile battery separator

Update. I went to measure the battery voltage and my meter quit working so I had to troubleshoot it. After resting for 12 hrs, and connected, the starting battery read 12.57 and the two 6 v coach batteries in series read 12.75. I put the charger on the starting battery again until tonight and see if anything improves. Then tomorrow I'll see where we are.
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Old 06-04-2019, 12:39 AM   #29
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Default Re: Agile battery separator

12.57 for the starter battery isn't bad.

--dick
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Old 06-04-2019, 02:26 AM   #30
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Default Re: Agile battery separator

I was going to give it one last go at it to see if the charger would go into "fully charged float mode" (solid green light, or what. For a relatively new battery that I have flattened twice now in 4 mos +/-, maybe this is as good as it gets.
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