Calculation help

[gimlimike]

I know one of you have what I need here !

I am trying to find the calculation to determine the power consumption from my 12 volt batteries by the Inverter to 110 volt for my plug ins. . It would be great if the calculation included the percentage of battery power available number as well.

Thanks in advance

[Stuart W]

Originally Posted by gimlimike

I know one of you have what I need here !



I am trying to find the calculation to determine the power consumption from my 12 volt batteries by the Inverter to 110 volt for my plug ins. . It would be great if the calculation included the percentage of battery power available number as well.



Thanks in advance

If I’m understanding your question, the answer would depend on the the amount of 110v demand (is it at idle with no 110v items turned on or is a 2000 watt inverter with everything connected to it on? . What is the size of your inverter?

["007"]

If your traveling your alternator will be charging your batteries,, if shore line or Gen running the converter will be charging batteries, so if your dry camping thats the only time you would need to worry, than again if dry camping if you have AGS the Gen would come on to recharge all. your batteries.

[gimlimike]

I am assuming I am not running my genny, am trying to get at items like a Kurig coffee maker and toaster or microwave, possible tv for the news in the morning so as not to wake people up with the genny noise while boondocking.

I was thinking that the inverter was the standard size in my unit but will look that up.

Certainly understand hair dryer, ac are not in the equation but more the usual stuff before taking off in the am

[Stuart W]

Yes there are variations in inverters and depending on the load battery voyage will very, not sure there is a short answer.

[Rotten-Red]

Originally Posted by gimlimike

I know one of you have what I need here !

I am trying to find the calculation to determine the power consumption from my 12 volt batteries by the Inverter to 110 volt for my plug ins. . It would be great if the calculation included the percentage of battery power available number as well.

Thanks in advance

Originally Posted by gimlimike

I am assuming I am not running my genny, am trying to get at items like a Kurig coffee maker and toaster or microwave, possible tv for the news in the morning so as not to wake people up with the genny noise while boondocking.

I was thinking that the inverter was the standard size in my unit but will look that up.

Certainly understand hair dryer, ac are not in the equation but more the usual stuff before taking off in the am

Based on the year of your MH you probably have a 2000 watt inverter and 4 - 6 volt batteries.

If my heads on straight I think that should give you about 200 amp hours of usable battery power before bringing the batteries down to about 50%.

Again unless I'm mistaken. Watts divided by volts = amps. So for an example lets say your microwave uses 1200 watts. If you were powering it with 120 volts AC it would take 10 amps AC. Now if you were powering it with the inverter using 12 volts it would take 100 amps of 12volt DC.

I'm assuming you have a RV refrigerator (gas/electric) not a residential model. Which will be running on LP when off shore/generator power. If your batteries are charged and not using furnace through the night I think you will probably be just fine in the morning using the items you listed without running the generator.

[gimlimike]

Thanks everyone for your input. you got me more curious so I went to my NEWGLE page and found what I was looking for under the electrical section.

Learning every day about my " Enigma Machine"

[Sealyn]

The short answer is - appliance AC amp draw X 10 = DC amp draw from the battery.

[Waiter21]

A reasonably simple and reasonably accurate estimate would be to look at the tags on the 110 volt appliances, look specifically for "amps".

Take that number and multiply by 10.. That will be the amps that your inverter will draw from the 12 volt source.

[gimlimike]

thanks everyone for your suggestions.