cbo
New Member
Posts: 4 
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Post by cbo on Feb 7, 2018 15:14:51 GMT -8
I've got a rover 20 amp controller attached to a 32 ah battery bank to run the lights in my chicken coop. I have a bt-1 attached to it for control.
When I change the battery setup to 32 amp hour and save it, it keeps defaulting back to 200 when I check the controller. Any ideas? The same thing happens when I use the included cable and windows software.
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Post by rabird on Feb 7, 2018 17:27:44 GMT -8
after you change and 'set' what happens when you 'read'?
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cbo
New Member
Posts: 4
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Post by cbo on Feb 7, 2018 18:01:28 GMT -8
It goes back to 200.
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Post by tattoo on Feb 7, 2018 18:38:11 GMT -8
After you change the setting are you telling it to save??
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Post by rabird on Feb 8, 2018 5:33:08 GMT -8
check again and do a 'read'. not sure where it gets initial values but a read should get controller values.
you are using the admin password before doing the 'set'?
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cbo
New Member
Posts: 4
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Post by cbo on Feb 8, 2018 9:45:51 GMT -8
check again and do a 'read'. not sure where it gets initial values but a read should get controller values. you are using the admin password before doing the 'set'? I am using the admin password provided in the BT-1 manual to save the settings. It saves the Gel cell charging setting but the battery amp hours revert to 200 after I do a read. |
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Post by rabird on Feb 8, 2018 10:24:52 GMT -8
If you are happy with the gel charging settings I'd do nothing but ya might have to use 'user',
When opened, my Renogy BT app shows 200 but a read shows my input ah setting, I'm on SLD.
Does your temperature on the monitor page show the correct temp? mine shows 25C always!
I would not worry about the ah size.
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cbo
New Member
Posts: 4
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Post by cbo on Feb 8, 2018 15:58:01 GMT -8
If you are happy with the gel charging settings I'd do nothing but ya might have to use 'user', When opened, my Renogy BT app shows 200 but a read shows my input ah setting, I'm on SLD. Does your temperature on the monitor page show the correct temp? mine shows 25C always! I would not worry about the ah size. Mine seems to be showing the correct temperature. If I am running a 32AH battery and the rover thinks it is charging a 100ah battery, wouldn't the float current be too high? I see .95 amps going to the batteries during float charging and it should probably be around .32 amps for the size of my batteries. |
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Post by rabird on Feb 8, 2018 17:23:26 GMT -8
NO, set voltage pts. So for a gel, float is 13.8v, that doesn't 'boil' electrolyte. The controller is not controlling amps it controls VOLTS.
So the battery can take whatever at 14.2v boost, when the BATTERY gets to 14.2v the controller controls how much power goes to the battery to keep it at 14.2v, the amps taper as the battery gets fuller and fuller, with boost set to 2hrs (no matter the sun shine) as long as it keeps the battery @ 14.2 for 2 hrs it then reverts to float of 13.8v. This is the voltage that keeps a fully charged battery full but if it is not full it may take some power to keep it at 13.2v, the ah size does not control this, the battery controls this, how it responds to the power delivered by the controller.
The only thing I can think of that the ah size is involved is SoC which is often meaningless.
So the controller tries to keep the batt @ 13.8v during float, if ya start using power from the battery then the controller will let more power come on down to keep the batt @ 13.8v and provide the power for what you are operating that needs power.
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