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Old 11-21-2016, 08:10 PM   #11
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watts / voltage = amps, you have 115+/- amps to play with.

Ex. I use 20 amps a day when everything is added up. In the winter I gain 10 amps in a day from the solar if the sun is out, a net of -10 amps a day. I could go roughly 11 days before I hit 50%.


Ahh, didn't see the toaster oven. Say toaster runs on 1500 watts, 1500/12 = 125 amps an hour. In an hour you'd be under your 50%, but then chances are you'd run some fraction of an hour, say 10 minutes, then 125/6=21 amps.
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Old 11-21-2016, 10:07 PM   #12
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Quote:
Originally Posted by parfsten View Post
Am I on the right track here? The two 6 volt batteries total 225 amps (will also have the solar panel on roof). I have googled and been on youtube and now turn to the experts. Is this formula correct? Amps X 10 divided by appliance wattage and again divided by 2 = run time to 50% of battery charge. Thinking of 12 volt appliances.

I'm curious, when not on shore power, can I run a small toaster oven?
The Interstate 6V batteries are 232Ah - not 232 Amps. Amp-hours means Amps times hours. Divide by Amps and you get hours, divide by hours and you get Amps. So it isnít Amps, and it isnít Amps per hour - it's Amp-hours. Here's a formula I was taught many years ago: 10 times the battery capacity in Amp-hours, divided by the load power in WATTS of the device = the approximate run time in hours. So, if you wanted to calculate the run time to the point where the batteries are roughly 50% drained, (I think that's what you're saying, no?), the final figure should be divided by two. Just an estimate, but should give you a pretty good idea. And yes, you can run a toaster oven, but to determine how long you can run it, you'd need to know the wattage.
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Old 11-22-2016, 05:18 AM   #13
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If you have an inverter you can operate 120v appliances for a short period of time. You can also skip the inverter option and purchase 12v appliances, such as televisions and even a toaster oven. Since the entire trailer will operate off propane or 12v, other than the air conditioning, that is the route I chose to take. Propane toaster ovens are available also.
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Old 11-22-2016, 08:06 AM   #14
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I think I am beginning to lean in this direction Jim. At first I thought... get the inverter - but now I am warming to the idea of 12 volting it. I am guessing it's not a large amount but the inverter would draw amps too, right? I have to get some things for the new trailer - might as well be 12 volters. Any recommendations for 12 volt appliance manufacturers? Have to put extra 12 volt outlets on my build sheet.
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Old 11-22-2016, 08:11 AM   #15
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You can not have too many 12v outlets, my 21' Escape had 5, my 19' has 4x 12v with 2 having the USB also. As far as appliances, I shop at 12 Volt Appliances at RoadTrucker.com
but you may want to wait until you start using the unit before getting too many extras, I have a garage corner full of unused items "I had to have" for the camper.
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