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 > Inverter charge battery?

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Tinstar

McKinney, TX

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Posted: 05/26/21 04:58pm Link  |  Quote  |  Print  |  Notify Moderator

On my 2002 Monaco Windsor. I know it depends on "how it's wired" but does my inverter charge my 8D engine start battery or only the house batteries?


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naturist

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Posted: 05/26/21 05:20pm Link  |  Quote  |  Print  |  Notify Moderator

Short answer: NO.

No inverter charges any battery. Inverters convert dc current into account current. To the best of my knowledge, no ac batteries exist.





Tinstar

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Posted: 05/26/21 05:29pm Link  |  Quote  |  Print  |  Notify Moderator

naturist wrote:

Short answer: NO.

No inverter charges any battery. Inverters convert dc current into account current. To the best of my knowledge, no ac batteries exist.


How are my house batteries being charged then? There is no converter.

Blaster Man

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Posted: 05/26/21 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

You probably have an inverter/charger...the inverter changes 12v to AC power and the charger charges the batteries. FYI, a converter, usually in pull behinds and 5th wheels, changes AC power to 12v...and has a separate charger.


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DrewE

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Posted: 05/26/21 06:17pm Link  |  Quote  |  Print  |  Notify Moderator

Some inverters are part of a combination unit that also has a charger function, and you apparently have one of those. The inverter part proper doesn't do the charging.

Whether or not your chassis battery charges when the house battery charges is a function of how advanced the isolator system for the two 12V systems is. If you have only a simple isolator, then the chassis battery is not charged by shore power. If you have a BIRD or similar, more advanced bidirectional isolator, then it will connect them so the chassis battery can charge. Similarly, there are separate devices available (the Trik-L-Start is a common one) that will charge the chassis battery from the house battery charger by diverting some current over to it when needed. You can also get a standalone AC powered battery maintainer for the chassis battery if needed to keep it charged.





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Posted: 05/26/21 06:53pm Link  |  Quote  |  Print  |  Notify Moderator

Combined charger/inverter is common. Charger/converter/interter are terms that are often used to mean the same thing by the general RV population.

The charger charges the house battery and your rig may/may not be setup to also charge the chassis battery. The alternator charges the chassis battery and the house battery.


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PursuitInsight

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Posted: 05/26/21 07:18pm Link  |  Quote  |  Print  |  Notify Moderator

your monaco is surely like mine. The house converter/charger does not charge the engine battery. Only the 4x 6 volts golf cart size house battery

But if an issue happens, there is a battery emergency switch on the dash, it connects the house batteries to engine battery. So you will have enought power to start the engine

time2roll

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Posted: 05/26/21 08:02pm Link  |  Quote  |  Print  |  Notify Moderator

If you have a voltmeter you can plug in overnight and check. 13.2+ volts on the chassis battery is getting a charge. 12.6 volts or less is not getting a charge.

You can add a battery combiner, such as Trik-L-Start, that will send power from the house system to the chassis battery. The combiner will separate the batteries if you are not plugged in.

A 20 yo MH may have had something installed by a prior owner. Check it.


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wolfe10

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Posted: 05/27/21 06:01am Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

If you have a voltmeter you can plug in overnight and check. 13.2+ volts on the chassis battery is getting a charge. 12.6 volts or less is not getting a charge.

You can add a battery combiner, such as Trik-L-Start, that will send power from the house system to the chassis battery. The combiner will separate the batteries if you are not plugged in.

A 20 yo MH may have had something installed by a prior owner. Check it.


Best answer.

OE, chassis battery did not charge from shore power or generator.

But, many owners DID add devices to do this. Either separate small smart charger or "smart thief" device that takes amps from house bank when the house bank is above a certain voltage.

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ferndaleflyer

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Posted: 05/27/21 07:48am Link  |  Quote  |  Print  |  Notify Moderator

I have the same DP and it has an inverter charger.

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