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Old 03-29-2012, 09:43 AM   #1
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Inverter not charging batteries.

The inverter is not charging batt. 25 amp fuse on front popping out after reset.
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Old 03-29-2012, 10:02 AM   #2
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It is a matter of is it the load the inverter sees or is it the inverter with a problem inside.
Also is it the AC side or the DC side of things?
If running on AC disconnect the 12 volt output and see if it trips if it does it is internal
If running on DC disconnect the 110 volt output and see if it trips if it does same as above.
If the inverter/charger passes test then one has to find what is causing the over current on the outputs. Not easy
A shot in the dark I bet the inverter/charger is the problem.
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Old 03-29-2012, 10:26 AM   #3
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Identifying the make and model of inverter would help get better answers.

I assume you are running an AC, since that is the only time charging is possible. Shore power (120vac) is being passed through the inverter to provide power to the output circuits, and the breaker will pop if the combined load on those circuits exceeds 25 amps. Start by disconnecting everything plugged into an inverter-supplied circuit to see if that stops it. If it does, either the combined load is too high or one of those items has a short.
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Old 03-29-2012, 05:02 PM   #4
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Is it the "inverter" or "converter" that charges the batteries?

I always was under the impression that the inverter provided 110v and the converter provided 12vdc. Where do I err?
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Old 03-29-2012, 05:28 PM   #5
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Converters and chassis Alternators charge batteries.
Inverters make 110vac from dc batteries.
Some coaches have a dual purpose box that does both Converter/Inverter functions.

B.I.R.D. systems and big relays intelligently tie the chassis and coach battery banks together so when going down the road the coach batteries will charge and when on shore/generator power the chassis batteries will charge.
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Old 03-29-2012, 05:39 PM   #6
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If a dual purpose, the converter portion is the part that charges the batteries. Yes, I knew this I just posed it as an awareness. Thanks for confirming.
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Old 03-29-2012, 07:21 PM   #7
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Quote:
Originally Posted by Wayne M View Post
If a dual purpose, the converter portion is the part that charges the batteries. Yes, I knew this I just posed it as an awareness. Thanks for confirming.
To add to the confusion, I don't have a converter, I have an inverter/charger.
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Old 03-29-2012, 07:33 PM   #8
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The inverter/charger (converter) will only charge the batteries if the battery voltage is above, a minimum voltage. If the batteries are low, you will have to use a stand alone battery charger to charge the batteris up, so the charger can charge them. Most inverters I have seen have breakers on the 120V side. they tend to power the 120V receptacles and/or accessories in the coach. If the 120V breakers are tripping, then it sounds to me like there is a problem with what is running on the receptacles. As has been suggested, disconnect everything that is plugged in and see if the breakers hold.

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Old 03-29-2012, 07:37 PM   #9
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In the real world of electronics either can perform the function of the other.
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