JamesJudasPries
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Re: Battery charging
Well, assuming you have quality lugs and thick cabling, they would probably easily take 100 amps or more at that level of discharge. In fact they might even draw the max charge current of 125 amps from the your inverter-charger briefly. I have two 6v batteries with #4awg wiring that is short in length. When I have discharged them to about 60 percent they will draw the max Prog dynamics converter output of 45 amps easily. I charge them with a honda eu2000i. That honda generator could probably run a PD 60 amp converter at full output no problem. I don't know the specs of your inverter charger, but chances are it could overload the honda 2000 when batteries are discharged that far. However, there might be some settings on your inverter-charger that could prevent that. The only way to know is to try it out. if your inverter-charger is this model 'MSH3012', there may be a way to program the settings to limit max shore power amps to a level the honda can provide continuously (under 15A AC).277Views0likes0CommentsRe: BATTERY CHARGING PUZZLE?
Are you sure you have group 27 batteries? Those are 12 volt batteries, so two of them wired in parallel is the only way to properly connect them. That is, positive to positive and negative to negative. This connection method provides 12 volts, but gives you the amp hour capacity of both batteries combined, so about 105 amp hours x2 = 210 amp hours, 12 volt. If you had 2 x 6 volt golf cart batteries, you must connect them in series (one positive terminal going to other battery's negative terminal, the remaining terminal of each battery being pos and neg. Their voltages combine to become 12v, but the amp hours will only be that of a single battery (220 amp hours). Google search battery series / parallel connections for a good picture or two. To answer your question, yes if you have a parallel battery setup each battery will see about half the rated current of the charger. If you had a series system with 6v golf cart batteries, then the current would be the rated current through both.199Views0likes0CommentsRe: not charging
Measure voltage on the post of isolator that alternator wire came from. Should be 13-14.5 volts to frame with motor on. Chances are connections are bad. If I were you I would replace the diode isolator with a solenoid type, especially if it is original from 1998. You can tell if you have one like others mentioned: heat sink= diode isolator, can shape with posts = mechanical solenoid. The voltage loss from the diode ones are brutal. At idle rpm you probably are draining the batteries. I don't know why these are installed since they are both more expensive and don't work very well at all.453Views0likes0CommentsRe: Should batteries be disconnected when on shore power?
There isn't much reason to disconnect your batteries. In my opinion, as others have stated, the battery life you think you gain in the long term will be negated with one accidental full discharge. In terms of the power supply/ vs charging arguments: The progressive dynamics units are really both. Since they are nicely filtered DC output that is always at a higher voltage than the batteries, the converter is indeed a power supply. Yes, it will run the 12volt side fine without batteries but just don't do it for the reasons already discussed. In the past, poor linear ferroresonant converters had a laughably low charging current, like 2-4 amps... And they only acted as a charger because eventually the output voltage of the charger would rise up high enough to actually charge the batteries if there were not too many other dc loads powered on in the rig. Executive summary: leave batteries hooked up when on shore power, check fluid levels once a month. Disconnect batteries if storing rig more than a day or two without power, to avoid parasitic drain.217Views0likes0CommentsRe: RV's too old to park in their campground???
Any park that has a strict age rule like that are a bunch of stuck up snobs with no concept of RVing. Like many have said, probably would not enjoy the place anyway. I guess management has to be busy bodies because they have no life. How does it work then with a poorly maintained, newer entry level cost RV vs a premium, well kept older RV?523Views0likes0CommentsRe: Light bulb ohms. What the heck is going on here?
Thank you all for the replies. Ok this does make sense. I actually did measure the bulb hot in a second test, but I only found about 5 more ohms. Obviously I wasnt fast enough. Clearly the rise in temperatture really ramps up resistance. Thanks for the insight on traffic lights! In Canada in the colder provinces, municipalities are having trouble because some cities have changed traffic signal lights to led lamps to save energy, but now face the problem of the lights being covered with snow and no one can see them. They dont get as warm anymore and melt the snow. Someone didnt think that one through in the relentless quest to terminate incandescence.813Views0likes0CommentsLight bulb ohms. What the heck is going on here?
Hello This is really bugging me. I decided to measure a new incandescent light bulb I was installing at home with a multimeter, since it had no marking. I thought sure, I could figure out if this new lamp was a 40 watt lamp by calculating its amperage from the 120 volts and its resistance. But then my multimeter said 32 ohms. Not a chance I thought, that would mean the lamp draws almost 4 amps, which is way way too much. Shouldn't it measure more like 320 ohms? Then I measured a 60w lamp which was marked as such, and the meter reported 17 ohms.... not a chance that is right... an 850 w lamp? No. Is my meter on the fritz? I measured a silver ring, and it got .01 ohms, which seems reasonable. What the heck? Plus the range is in the 200 ohm range, the lowest range logical for things go figure, under 200 ohms... Why would the meter accurately report low readings but not high? it seems to be off by a factor of 10! Thanks for any insight3.1KViews0likes12CommentsRe: How loud is your onan microlight 2800 in your B?
I guess the real question is why doesn't onan make an inverter type built in generator? Then the rpm wouldn't have to blast at 3600 all the time. Its 2016. The technology has been around for a long time, probably 15 years. Its time the built in generators gained these features.541Views0likes0Comments
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