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Old 08-19-2016, 02:23 PM   #1
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16vdc and Norcold Refrigerator ?

I have a Norcold 821L two way refrigerator in our 5th wheel and have always disconnected the batteries when I equalize the batteries. The charger I use for equalization goes up to 16.0vdc. Today I dig out my owners manual and see that it says not to exceed 15.4vdc. I give Norcold a call and ask if 16vdc is OK, they say yes no problem what so ever, go for it. Anyone here have any experience with this please.
Bill
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Old 08-19-2016, 02:50 PM   #2
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When equalizing best practice is to disable whatever can be disabled. Imho.
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Old 08-19-2016, 08:15 PM   #3
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That's because Norcold reps don't know their own products. No, 15.4 VDC is not a reading set by Norcold, it's a battery max for charging. You should change the metrics on your charger because that's ridiculously high. My batteries when charging are at 13.4 VDC. Just so that you know, you can never charge your batteries higher than 12.6 VDC. No need to have it set so high.

I would also think that your damaging your batteries by doing this.
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Old 08-19-2016, 08:23 PM   #4
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Quote:
Originally Posted by PJtraveler View Post
That's because Norcold reps don't know their own products. No, 15.4 VDC is not a reading set by Norcold, it's a battery max for charging. You should change the metrics on your charger because that's ridiculously high. My batteries when charging are at 13.4 VDC. Just so that you know, you can never charge your batteries higher than 12.6 VDC. No need to have it set so high.

I would also think that your damaging your batteries by doing this.
Equalizing batteries are a part of maintaining them.

You are NOT damaging the batteries/vehicle by doing this, this is why the OP disconnected them from his House.


Here is the procedures for equalizing batteries

Trojan Battery Company


OP, I would not run my fridge while equalizing, there is no reason too.

Do what you are doing, disconnect and equalize.
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Old 08-19-2016, 08:34 PM   #5
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Quote:
Originally Posted by PJtraveler View Post
That's because Norcold reps don't know their own products. No, 15.4 VDC is not a reading set by Norcold, it's a battery max for charging. You should change the metrics on your charger because that's ridiculously high. My batteries when charging are at 13.4 VDC. Just so that you know, you can never charge your batteries higher than 12.6 VDC. No need to have it set so high.

I would also think that your damaging your batteries by doing this.
If the max voltage your batteries are getting is only 13.4 when being charged, then it is likely that your batteries never get fully charged. Also, it is not uncommon for my Trojan T-105s to show 12.8 volts in the evening with a light load on them, and not receiving any charge.
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Old 08-20-2016, 01:02 AM   #6
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Quote:
Originally Posted by PJtraveler View Post
That's because Norcold reps don't know their own products. No, 15.4 VDC is not a reading set by Norcold, it's a battery max for charging. You should change the metrics on your charger because that's ridiculously high. My batteries when charging are at 13.4 VDC. Just so that you know, you can never charge your batteries higher than 12.6 VDC. No need to have it set so high.

I would also think that your damaging your batteries by doing this.
X3^^^ We're not sure where you're getting this information but it needs to be reviewed.
Granted battery voltages can be misleading and batteries should be allowed to rest before these readings. Ambient temperature comes into play also but at 12.6VDC (rested) your battery is probably only 60% charged.
Plus depending on the temp & stage your charging at bulk, 14.6V absorb, you'd probably be down to 13.4V for float.

OP: disconnect do maintenance.

Be well
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Old 08-20-2016, 01:18 AM   #7
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Thanks for the info to all. I have always disconnected my batteries when equalizing and I guess I always will. I thought the Norcold Rep. was off he was to quick to answer my question and seemed not the least bit concerned what he had just told me. I tried to explain I was concerned for the circuit board in the refrigerator but he kept right on insisting it was ok. I ask if Norcold would replace the circuit board if I fried it he deflected the question and was done.
Bill
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