Mandoguy
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Porcelain points
I just got my BT Cruiser back from 4 seasons rv where they got the furnace working. I've read and watched a lot of stuff about Suburban furnaces but never heard of what they diagnosed which was " cracked porcelain points" in or on the burner. The service guy couldn't really describe them. Anyone know what they're talking about?691Views0likes2CommentsRe: Battery under load
May I ask more about charging? I installed a Powermax Boondocker 3 stage plus desulfating converter. It's boost stage should be 14.6 but on my volt meter I've rarely seen it go above 13.6. Is that an indication of full batteries or not? I read much of Handy Bob's Blog and he would say no it seems.449Views0likes0CommentsRe: Battery under load
What about forgetting my batteries and getting back to my original question. When a battery is under a load, the voltage you would read drops, correct? So assuming someone doesn't have $200 worth of dignostic equipment, but only a way to check voltage, if the reading drops to say 11.8v but rebounds above 12 when the load is removed, is any damage being done to the battery at that low voltage with the load applied?449Views0likes0CommentsRe: Battery under load
I'm aware of GC bateries and what they cost but not spending $ on anything new till these give up the ghost. Same with $150 meters. I don't understand what makes everyone think it's not working well. I think I could have carried that 7a load for 9 hours or more without worrying about battery damage, I just quit the test. Getting into these batteries in their compartment to check water is a PITA so no hydrometers in my future. From other reading I've done the voltage drop under load I'm seeing is not that unusual. Anyone else ever check their's? This is a small rig and the batteries and load center are about 4 feet away from each other.314Views0likes0CommentsRe: Battery under load
Just to follow up I ran a test yesterday to see how long these batteries would hold up. Once again, relying on a $9 voltmeter connected to the main 12v lugs in the electrical compartment. However that meter matches my handheld voltmeter. I disconnected it from 120v, let it rest for 30 min. At that point was still reading 12.8. Instead of running the furnace fan I turned on all the lights till I read 7.1 amps at the battery. That brought the voltage down to 12.3. In 45 minutes it dropped to 12.2. After an hour and 20 min. dropped to 12.1. It settled there for the next 3 hours when it dropped to 12.0. The plan was to let it dip to 11.9 before terminating and seeing what the rebound voltage was but it was 9:30 and 6 hours in so I decided to quit, still reading 12.0. Waited 30 minutes and the voltage had rebounded to 12.3. So I plugged it back in and went to bed. I now have some evidence of how long they will last and also what to expect in terms of voltage drop under load. Thanks everyone for your input.314Views0likes0CommentsRe: Battery under load
As far as using the heater it would probably only be around 45 outdoors at the coldest and would like to keep inside at least at 55. I haven't done this before so that's what I'm trying to figure out. I would guess it would run no more than 3-4 hours. Time2, I like your style. However doing hydrometer tests are a real pain on this unit as the batteries are in a tight lower compartment. I installed a volt meter connected to the main lugs of the elecrical panel. Cheap meter but it matches my multimeter and solar controller.314Views0likes0Comments
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Join in here to discuss all things motorhomes.Feb 28, 202538,707 Posts
