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Post by bupkis on Nov 6, 2018 2:59:43 GMT
I hope your voltage discrepancy is constant or a fixed % so you can use it.
To me it all relative and usable but I might understand how you feel it is unusable (I suggest you get over it!!!!)
Like your speedometer, bathroom scale or oven temp, none are accurate but relative.
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Post by playersz28 on Nov 6, 2018 15:26:02 GMT
Well, I measure it in the morning and the LCD showed 12.3 while the DVM on the CC terminals showed 12.51v
I need to check that the elevated voltage levels are still correct for the AGM charge parameters.
Everybody else has battery terminals showing the same voltage as the LCD display or reported voltage from the CC? Don't know if there are other Rover owners here that can check.
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Post by tattoo on Nov 6, 2018 15:42:52 GMT
Well, I measure it in the morning and the LCD showed 12.3 while the DVM on the CC terminals showed 12.51v I need to check that the elevated voltage levels are still correct for the AGM charge parameters. Everybody else has battery terminals showing the same voltage as the LCD display or reported voltage from the CC? Don't know if there are other Rover owners here that can check. What was the voltage on the batteries themselves checked with your DVM? And what was the CC telling you what the voltage is in the batteries? 12.3 right? Not checked with your DVM?
What kind of draw do you have on your batteries?
Thanks
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Post by bupkis on Nov 6, 2018 16:50:03 GMT
looks like the CC is ~.2v low always. I few more measurements and you'll have it dialed in.
I don't have the rover but I have the exact same LCD, pwm controller made by srne solar like the rover its .05-.1v low compared to my DVM across the board.
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Post by playersz28 on Nov 6, 2018 18:06:52 GMT
Well, I measure it in the morning and the LCD showed 12.3 while the DVM on the CC terminals showed 12.51v I need to check that the elevated voltage levels are still correct for the AGM charge parameters. Everybody else has battery terminals showing the same voltage as the LCD display or reported voltage from the CC? Don't know if there are other Rover owners here that can check. What was the voltage on the batteries themselves checked with your DVM? And what was the CC telling you what the voltage is in the batteries? 12.3 right? Not checked with your DVM?
What kind of draw do you have on your batteries?
Thanks
Not sure what you're trying to get to with your questions. It has nothing to do with anything in the system except the CC. It showed 12.3v on the LCD and 12.51v on the DVM when reading the battery connections on the CC itself. It thinks the battery is less than it is (12.3v could be anywhere from 12.25v to 12.39v before rounding). There was no draw on the system not that it matters at all in this case, that would just lower the Batt voltage AND the voltage displayed on the LCD.
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Post by playersz28 on Nov 6, 2018 18:09:36 GMT
looks like the CC is ~.2v low always. I few more measurements and you'll have it dialed in. I don't have the rover but I have the exact same LCD, pwm controller made by srne solar like the rover its .05-.1v low compared to my DVM across the board. You wouldn't think it would be that hard for the internals to read a voltage and display it correctly. If it wasn't such a pain I'd swap back to the Tracer and see what it shows. The whole reason I went to a Rover was for the extra data produced and the BT connection. If it's incorrect then the data is useless.
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Post by tattoo on Nov 6, 2018 18:15:32 GMT
There was no draw on the system not that it matters at all in this case, that would just lower the Batt voltage AND the voltage displayed on the LCD.
Sure it matters a LOT..... If there is no draw on your batteries why are they at 12.3 in the AM? When you say your getting 14 to 15.5 charging in the afternoon....
I wish I could help you....
Good luck...
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Post by playersz28 on Nov 6, 2018 18:48:44 GMT
There was no draw on the system not that it matters at all in this case, that would just lower the Batt voltage AND the voltage displayed on the LCD.
Sure it matters a LOT..... If there is no draw on your batteries why are they at 12.3 in the AM? When you say your getting 14 to 15.5 charging in the afternoon....
I wish I could help you....
Good luck...
They're not at 12.3v (which is what the CC says), they're at 12.5v (from DVM & other meters) and 12.8v would be a battery that has sat and rested all night with no load at all. These batteries have some parasitic electronic load in the RV and the CC drawing on them overnight. So when I say no load, I mean no significant load. My point is I don't care whether the batteries are 12v, 12.5v, 14v, 15v, or any other number. The whole point of this thread is that the CC shows a battery voltage that isn't correct in any way and is consistently wrong. Whether it's 6AM or high noon and full sun the number is always wrong.
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Post by tattoo on Nov 6, 2018 20:11:52 GMT
They're not at 12.3v (which is what the CC says), they're at 12.5v (from DVM & other meters) and 12.8v would be a battery that has sat and rested all night with no load at all. These batteries have some parasitic electronic load in the RV and the CC drawing on them overnight. So when I say no load, I mean no significant load. My point is I don't care whether the batteries are 12v, 12.5v, 14v, 15v, or any other number. The whole point of this thread is that the CC shows a battery voltage that isn't correct in any way and is consistently wrong. Whether it's 6AM or high noon and full sun the number is always wrong. You say it has no load but in reality it has a load, small or not it has a load......
You say you don't care about numbers, But this is all about numbers....
I don't think you have a problem with your CC....
Good luck...
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Post by playersz28 on Nov 6, 2018 22:11:42 GMT
They're not at 12.3v (which is what the CC says), they're at 12.5v (from DVM & other meters) and 12.8v would be a battery that has sat and rested all night with no load at all. These batteries have some parasitic electronic load in the RV and the CC drawing on them overnight. So when I say no load, I mean no significant load. My point is I don't care whether the batteries are 12v, 12.5v, 14v, 15v, or any other number. The whole point of this thread is that the CC shows a battery voltage that isn't correct in any way and is consistently wrong. Whether it's 6AM or high noon and full sun the number is always wrong. You say it has no load but in reality it has a load, small or not it has a load......
You say you don't care about numbers, But this is all about numbers....
I don't think you have a problem with your CC....
Good luck...
Yeah, okay. This isn't a big issue with the system, it's the CC itself. I'll remove it from the system and hook it to a 12v power supply. If the numbers don't match then there's something wrong with the CC.
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Post by tattoo on Nov 6, 2018 22:28:45 GMT
Yeah, okay. This isn't a big issue with the system, it's the CC itself. I'll remove it from the system and hook it to a 12v power supply. If the numbers don't match then there's something wrong with the CC. I'd say once you isolate the CC it will be the same voltage/numbers as the battery.....
But it's your CC..... What ever you thinks best...
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Post by playersz28 on Nov 7, 2018 13:51:56 GMT
Bench test: "Reported/LCD V" = "Supply V" 12.0 = 12.12 12.5 = 12.65 13.0 = 13.18 13.5 = 13.70 14.0 = 14.20
I adjusted the supply V slowly to where the LCD just changed the tenths to the next digit assuming this would be the minimum rounding. The SupplyV was measured on the CC battery terminals.
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Post by bupkis on Nov 7, 2018 15:20:02 GMT
1% - 1.5%
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Post by tattoo on Nov 7, 2018 15:55:53 GMT
Ok, For shits and giggles I went and looked at my system..... My batteries are at 12.80 with my voltmeter and my 60a CC says the batteries are at 12.87... Does it bother me? No, I bet it has been that way from the beginning and it could be more or less when it's charging more than it is this early in the AM...... Also I bet it's some kind of an algorithm.....
If it bothers you buy a better CC and see if it's closer..... I'm just glad mine's charging my batteries and has been for over a year now....
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Post by tattoo on Nov 7, 2018 20:23:46 GMT
Alright..... Here you go, I just checked while it's charging and the batteries are at 14.35 and the CC says the batteries are at 14.54...
Like I said before there is nothing wrong with your CC....
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