No. I do not have the the tools to do it but I know fore of them power every thing all night where ten led acid deep cycles could not. Plus they still have power to spare in the morning.
On my setup the battery is for battery the solar is for panels and the load i programed to turn out door led lights when the sun goes down and off when it comes up. the power on load terminals is fed from the battery.
I have two of these controllers mounted about a inch from the surface with spacers you can get at home depot and a computer fan hooked to the load output. In the summer if i see the output is high i turn the fan on remotely. controller actually runs cold.
You can get a tester any place they sell auto parts. Harbor freight sells a good one dirt cheep or let the place you got it from check it. Where i worked we sold a lot of batteries and every once in a while you get a bad one.
If is exposed to sun light and you do not paint it the uv wull brake down epoxy and you will have one big mess. I know what i am talking about. 42 years of working with epoxy i have seen the results when it is not protected.
What i used to do with aluminum engines is clean the hole with acetone on a ear swab and get a or make a stud.
put a drop of locktite 271 and install the stud all the way. from then on you only have to remove the nut. Jb weld woulw be a insulator and could cause a hot spot under heavy load...
The isolater is to stop feedback from a another boat on the dock that has a electrical problem r even the marinas system grounding through your rig. Most hi end boat builders have them installed from the factory. If you ground the gfci to the dc system you are connecting the ac and dc system...
I for got that if you ground the outlet thru the inverter and it is connected to the shore powerit will ground by the way of the isolater electronicly and onely negitive. If you ground the outlet to the engine you have no protection from the positive side of the ac cycle and there where the...
If you go the helicoil rout check your local auto parts supplier they male a kit that comes with everything drill -tap -installer and coils real cheep. The tab end goes in first and when you are done just snap off the tab with a small screw driver.
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The first thing i would do is disconnect all the battery's And put a load test to them separately. You may have full voltage but no or low amps. If that is the case your battery has a bad cell.
What i would do is contact volvo directly and talk to a teck and not a sales person. I worked with mercruser and they would always help out a buyer.With computer controlled engines fooling with charging systems can end up with some real nasty results.
If you look AT THE BATTERY TYPES IT DOES NOT list lithium. It sounds like a glorified battery relay jump start relay and monitor that has bin used for years. Also you would not believe how meany times i had to deal with a new product that three months later had recall after recall and some times...
First of all you NEVER connect any ac device to a boats dc system not even the ground. I had a customer put a inverter on a brand new boat and grounded it to the engine 12 volt ground stud. In less than a week It ate the drive away and sank the whole thing. 82000 dollar mistake. Warranty void...
I Did the same thing once . I thought i fried the controller. Took all wires off and shorted the terminals on the controller to discharge any internal charge. left it that way for 20 minutes. Connected battery's and it came to life.Connected the battery's and has been fine ever since.
If the battery is below the deck use a plastic battery tray or box. If it has to be wood use epoxy resin but remember if it has to be where it is exposed to the weather it has to be sanded and be coated with a oil based paint.
Possible fuse overheated but not enough to blow. When you replace the holder if you re locate it remember that it is to be located within 18 inches of the power source by cost guard and apba regulations