Trojan Boat Forum

Larry,

My fridge is AC/DC so it runs off the batteries when we are away from the dock. If you fridge is 2 amp AC your 1500 watt inverter will be enought to run it. I think the 125 amp hour battery from Walmart - Maxx29 Marine Battery, will be big enough to handle that load for a couple of days. Remember, your small fridge will not continue to run at 2 amps but will cycle as it reaches temp and then shuts down for a while.

If your fridge is 2 amps at AC current and it's 110 volt AC that means it requires 220 watts to run. Figure it will need double at surge so that's 440 watts to kick it over. Well within the range of your 1500 watt AC inverter. You would need enough DC amperage to power your inverter to that load, and my brain is now tired. But I think you'd have enough amperage from the singel 125 ah battery to run that puppy for a couple of days.

Let the electrical computing begin. Some of the other guys on this forum can provide the DC amps required to run this load off your inverter, or you can look for it on the web. I'm going to bed now.

The cable length from the battery to the inverter is 1 foot, that's the shortest cable I could come up with. The battery(s) is under the stairs in the cabin, and the inverter is right next to it. The fridge is under the sink area inside the cabin. I'm using a heavy duty ext cord added to the fridge cord, about 3 feet in length that plugs into the outlet on the inverter. The wiring I'm am using from the battery to the inverter is to the standard spec size set in the instruction manual, that came with inverter.
By what each of you are saying, it sounds like a pretty good setup to me, that I used.
If all goes well, later, I may plug the microwave into it also, to see how that goes. Taking one step at a time, I have other plans for solar power for charging the batteries while underway, placing the panels on top of the hardtop, perhaps not enough to keep the house battery fully charged, but slow down greatly, it's discharge.

Thanks very much for your suggestions, they have helped me a great deal and confidence, that I'm on the right track.

Larry

Good night Randy,,,,,,,,and thanks.

Larry

Get your self a Volt meter tester and then you can check the battery Voltage easily by touching it to the terminals, shut Inverter off first... you want to keep the battery above 12.06V while away from marina.
That is much easier than wiring in a Volt meter.

Larry , sounds like your on the way to having that refer set up. But the microwave ? That 1500 watt inverter won't do it. Most of them are 1100 watts , with a start up of over 2200 , my 6.5 kw onan knows when ours starts and and next is a coffee pot my 3000 watt inverter will run one IF the batteries are fully charged or one of the engines are running pumping in the dc current . And remember to turn the temp up on the refer at night to save on battery life. I bet most of us do that if our brains remember to do it. And Sam's club has 4d 's for around 120 bucks.

Larry, you should also consider what I do. We use my boat's fridge as the onboard pantry. We freeze blocks of ice (They last much longer) in 2 small plastic trash cans (WM_$2.00), old milk jugs will do also. They stay cold for days at very little cost to you. We bought one of the 5 day coolers for about $30, they last longer than a battery and provide extra seating. Two or three small plastic stacking crates ($3.00) to put in the cooler, keeps your food stuffs organized and dry stuff out of the water. We have gone for a week with this setup and it works fine. Total cost is about $40 and you have a cooler for picnics too!!

And Sam's club has 4d 's for around 120 bucks.


Tony,

What are 4d's?

I hope it ain't something simple.

Larry

larglo wrote:And Sam's club has 4d 's for around 120 bucks.


Tony,

What are 4d's?

I hope it ain't something simple.

Larry

4D, 6D, 8D are battery sizes

Now I am confused, why do you all do this to me?

What type of battery. If the are deep cycle, I have heard of the sizes as being like 27,,,,29,,,,31,,,,etc depending on the amp hour. So where does a 4d come into the picture,,,,,flashlite batteries? If they are deep cycle how do the "d" ratings compare to the amp hour?

Larry

I have been wanting to ask how you all can take parts a previous post and insert it into another post with a white background? I have tried copy/paste, but didn't work?

It's hell,,,,,being stupid,,,,ain't it.

Larry

Larry you want deep cycle for this. my start batteries are group 24 and are about the size of a car battery. 8D's are much, much bigger

U1 34 to 40 Amp hours 12 volts
Group 24 70-85 Amp hours 12 volts
Group 27 85-105 Amp hours 12 volts
Group 31 95-125 Amp hours 12 volts
4-D 180-215 Amp hours 12 volts
8-D 225-255 Amp hours 12 volts
Golf Cart & T-105 180 to 225 Amp hours 6 volts
L-16, L16HC etc. 340 to 415 Amp hours 6 volts

larglo wrote:I have been wanting to ask how you all can take parts a previous post and insert it into another post with a white background? I have tried copy/paste, but didn't work?

It's hell,,,,,being stupid,,,,ain't it.

Larry

hit the quote button at the top right side of the persons post

hit the quote button at the top right side of the persons post[/quote]

Just checking.

Larry

Just checking,,,,,,again!


It's hell,,,,,being stupid,,,,ain't it.

Larry[/quote]

hit the quote button at the top right side of the persons post[/quote]

And 4D's will weigh close to 150 lbs....