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Post by inhabor on Oct 26, 2018 1:10:10 GMT
I have a 3- 100 watts panels, a 40 amps rover controller and a 100ah lithium phospate battery. I run a dometic fridge- freezer that use 5.6 amps, I know this information because I also have a trimetric meter in my sistem. My question is how many hours my fridge should run with my 100ah battery? Also how come the bigger number that I see in my rover and trimetric meter is 13.1 volts with the battery fully charged ? It is supposed to be like 14. something?
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Post by tattoo on Oct 26, 2018 2:07:43 GMT
Are you asking how many hours should it run at night with nothing charging the single 100ah battery?
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Post by inhabor on Oct 26, 2018 2:11:11 GMT
Are you asking how many hours should it run at night with nothing charging the single 100ah battery? Yes.
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Post by bupkis on Oct 26, 2018 2:24:40 GMT
use your trimetric to determine how many ah it uses in 24 hrs and compare to battery bank. I assume it uses ~6A while operating but how much does it actually run, consider how often the door is open and the ambient temperature.
A model # might be helpful if dometic has measured daily or annual energy use
You'll need to contact support about the voltage, I have questions of the Li charge profile. Once it reaches charging voltage what is the charge profile, there is no state time or float v, so does it stop charging till the voltage is below the return to boost voltage?
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Post by inhabor on Oct 26, 2018 11:40:52 GMT
use your trimetric to determine how many ah it uses in 24 hrs and compare to battery bank. I assume it uses ~6A while operating but how much does it actually run, consider how often the door is open and the ambient temperature. A model # might be helpful if dometic has measured daily or annual energy use You'll need to contact support about the voltage, I have questions of the Li charge profile. Once it reaches charging voltage what is the charge profile, there is no state time or float v, so does it stop charging till the voltage is below the return to boost voltage? It goes to float after reaching 13.1 volts. The trimetric meter shows tha is using 5.6 amps. I left it running last night and I didn't last. This morning the sistem was death.I think something is wrong. After paying $865.00 for this battery I thought that it would work for more than a few hours.
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Post by bupkis on Oct 26, 2018 12:49:01 GMT
If death means the battery shut down I'd be disconnecting all loads from the battery and following tech support advise how to use solar to revive it.
I'd also be trying to return the controller if it can only charge to 13.1v.
If the fridge uses 6A all the time then the math is easy for a FULL battery, assume you only want to drain 50ah out of your battery, 50 ah / 6a = 8.3 h
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Post by tattoo on Oct 26, 2018 13:46:14 GMT
You need to buy a Kill-A-watt meter.... But a 100ah battery isn't very much.... Like your finding out I really doubt that you can run a fridge all night.. It's a guess because more info is needed I would think that you will need at least 400ah of battery to besafe....
I myself don't like Li batteries... They are way to expensive for the amount of power that you get...... I have way less than $865.00 in my 6, 645ah of batteries.....
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Post by inhabor on Oct 26, 2018 13:55:06 GMT
You need to buy a Kill-A-watt meter.... But a 100ah battery isn't very much.... Like your finding out I really doubt that you can run a fridge all night.. It's a guess because more info is needed I would think that you will need at least 400ah of battery to besafe.... I myself don't like Li batteries... They are way to expensive for the amount of power that you get...... I have a little more than $865.00 in my 6, 645ah of batteries..... This sistem is in a vw bus,so the weigh of the battery is crucial. The dometic fridge use 5.6 amps, I can see that with my trimetric meter. Why do I need a kill a watt meter?
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Post by inhabor on Oct 26, 2018 13:56:41 GMT
You need to buy a Kill-A-watt meter.... But a 100ah battery isn't very much.... Like your finding out I really doubt that you can run a fridge all night.. It's a guess because more info is needed I would think that you will need at least 400ah of battery to besafe.... I myself don't like Li batteries... They are way to expensive for the amount of power that you get...... I have a little more than $865.00 in my 6, 645ah of batteries..... The only thing that I have running is the dometic fridge using 5.6 amps?
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Post by bupkis on Oct 26, 2018 14:05:57 GMT
model # would be helpful, does the appliance consume 5.6A all the time? Dometic has various fridge/freezers.
5.6A x 24 hr = 135 ah
getting the battery charged to 14+v is imperative.
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Post by inhabor on Oct 26, 2018 14:24:26 GMT
model # would be helpful, does the appliance consume 5.6A all the time? Dometic has various fridge/freezers. 5.6A x 24 hr = 135 ah getting the battery charged to 14+v is imperative. Domestic CFX95DZXW is the model number
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Post by inhabor on Oct 26, 2018 14:25:31 GMT
model # would be helpful, does the appliance consume 5.6A all the time? Dometic has various fridge/freezers. 5.6A x 24 hr = 135 ah getting the battery charged to 14+v is imperative. Domestic CFX95DZXW is the model number Is not even running 8 hrs.
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Post by bupkis on Oct 26, 2018 14:26:40 GMT
Your battery was not full! You need to fix that ASAP
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Post by inhabor on Oct 26, 2018 15:17:24 GMT
Your battery was not full! You need to fix that ASAP So why is not charging fully? It stays at 13.1 volts all the time, even after a week of full sun with nothing connect it to it.
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Post by bupkis on Oct 26, 2018 16:04:45 GMT
not sure, contact tech support. they may have you measure voltage at different places to determine is the panels are OK and/or of the controller is operating correctly.
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