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 > Your search for posts made by 'pianotuna' found 1179 matches.

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RE: South Dakota park with hookups

There is a lions club camp near the National Music museum. It has what you want except the sites are grass. 414 E Clark St, Vermillion, SD for the Museum; https://freecampsites.net/#!1523&query=sitedetails for the campground https://freecampsites.net/#!1523&query=sitedetails
pianotuna 06/29/22 05:56pm RV Parks, Campgrounds and Attractions
RE: Low Battery Voltage

If you want to run the refrigerator on electric while driving, get a DC-DC batter charger. As most fridges need 325 watts, a 40 amp dc to DC unit would work--but that requires a larger alternator.
pianotuna 06/29/22 04:11pm Travel Trailers
RE: Solar Project – 2/3 Done

Victron is the bomb. Nice system! How much storage do you have?
pianotuna 06/29/22 09:20am Tech Issues
RE: Low Battery Voltage

Mr C, How many amp-hours is the battery?
pianotuna 06/29/22 09:07am Travel Trailers
RE: Renogy 20A dc to DC report

Hi BFL13, My cousin did the bench test. I was not there. He said it provided 20 amps out and drew about 30 amps to do so. He did not mention the voltage, and I did not think to ask him. But if it was pushing out 20 amps I think it probably was set for the 14.7 output voltage. I'll be traveling to him in late September or early October for the installation. My reason for adding the dc to DC unit is that currently my "house" bank discharges into the V-10 at about 8 amps when trundling down the road at highway speeds. Some of that loss is made up by the solar--but not all. This started when I moved to the AGM telecom jars. Since 2009, I've driven the class C about 10,000 miles a year. With higher fuel prices that may drop by 50%.
pianotuna 06/29/22 08:03am Tech Issues
RE: More on LFP Charging

time2roll, I have twin battery banks. My biggest charging source is a Magnum 3000 watt inverter/charger. It maxes out at 127 amps. The recommended maximum charging rate for the existing telecom jars is 107 amps, or about 19%. If I did go to LiFePo4, I'd still not be able to charge them significantly faster without getting a larger inverter/charger. My personal choice for replacements would charge at 0.25 C and do not taper. Assuming 400 amp-hours charging would be 100 amps. LiFeP04, again assuming 400 amps would be 120 amps. That would mean 20 minutes less charging time on Li. But Li don't even enjoy being charged to 100%--so in real terms there may be zero difference in charging time. There is a savings in cost especially if you "roll your own" Li. But as I do use my RV at -37 c (-34 f), Li are pretty much not going to happen. As to having them in the heated area of the RV There would have to be major modifications to make them fit in the heated space. If I were still full time it could work. However, I'm personally not comfortable with ANY house bank inside the living quarters. In short, LiFePo4 are great where it is warm--but not too hot either. They simply do not meet my particular needs.
pianotuna 06/28/22 11:22pm Tech Issues
RE: Renogy 20A dc to DC report

Hi BFL13, As the #8 is already in place both for input and output, moving up in size before I try it seems a bit silly. I'll certainly let you know (after Cdn Thanksgiving).
pianotuna 06/28/22 10:56pm Tech Issues
RE: More on LFP Charging

At 0.3 C the "rapid charging" feature disappears compared to my favorite chemistry. 166 amps is too slow? On a 100 amp Li it would be 30 amps yes? So where does 166 come from? (scratching my head)
pianotuna 06/28/22 09:42pm Tech Issues
RE: Renogy 20A dc to DC report

The owners manual suggests #8 wire is good for up to 20 feet for the 20 amp dc to DC unit. Fuse at 30 amps. ANL type Output wire is #12 for up to 10 feet. Fuse at 25 amps. ANL type. Input voltage is between 8 and 16 volts. Rated Max power is 250 watts. Efficiency is 90% (excellent).
pianotuna 06/28/22 09:31pm Tech Issues
RE: Renogy 20A dc to DC report

BFL13, #8 has a voltage drop of 2.46% at 10 feet (more than I need). It can carry 55 amps. The whole idea of the dc to DC is to boost the voltage going into the battery bank. Therefore voltage drop to the charger doesn't matter--so long as the ampacity of the wire size is not exceeded. On the Output side I might have about a 4 foot run. Voltage drop about 0.76% with #8 wire at 20 amps. Pretty much I think that can be ignored. I must look up the charging voltage on the telcom jars that have served me so very well. Thanks for the thought provoking comments.
pianotuna 06/28/22 04:25pm Tech Issues
RE: More on LFP Charging

At 0.3 C the "rapid charging" feature disappears compared to my favorite chemistry. I think it is great that folks can "roll their own". Can the bms be set to limit current to 0.3 C for charging? Li are excellent except in the cold.
pianotuna 06/28/22 01:35pm Tech Issues
RE: Renogy 20A dc to DC report

Hi All, I did not do the bench test--my cousin did, so I don't have answers to your questions. I thought it might be useful to others. I'll be "feeding" the unit with #8 wire. I have a choice of powering from the alternator, or powering from the starter battery (which is of course charged by the alternator), but only with the ignition key turned on. Doing the battery route would eliminate surge on the alternator, so I'm leaning in that direction. I'll have the ability to switch the dc to DC off. I'll still have a "poor man's boost ability, too.
pianotuna 06/28/22 01:20pm Tech Issues
Renogy 20A dc to DC report

Hi All, Regarding the Renogy 20A DC to DC Battery Charger 12V, the unit puts out 20 amps, but draws 30 amps when doing so. This is the result of bench testing.
pianotuna 06/28/22 08:56am Tech Issues
RE: A Big Thank You

rarintogo, It depends on how much of a hurry you are in. I have a V-10 and oversize wheels on a class C E-450. I weigh 13750 fully loaded and have no problems in the rocky mountains.
pianotuna 06/27/22 10:10pm Tow Vehicles
RE: What size generator to run AC??

I prefer a single remote electric start generator.
pianotuna 06/27/22 11:05am Travel Trailers
RE: My Fridge Died

Hi, In your shoes, I'd go to a 12 volt fridge.
pianotuna 06/26/22 08:49pm General RVing Issues
RE: Converter voltage drop

Hi Gdetrailer, I agree. Li are FUSSY. They can work well. I'll never own them as I camp in extreme cold.
pianotuna 06/24/22 03:55pm Tech Issues
RE: Electrical question

And now you have people with electric vehicles plugging in which will make things worse. Please provide a link that supports your opinion.
pianotuna 06/24/22 03:44pm General RVing Issues
RE: Warm Fridge - Dometic DM2882

Typical in hot weather. Adding a fan that clips onto the fins inside the fridge helps. Adding fans to the "chimney" also helps. My twin fans for the chimney are on a mechanical thermostat.
pianotuna 06/24/22 08:32am Travel Trailers
RE: Converter voltage drop

I'd go inverter/charger. Li follow the makers recommendations.
pianotuna 06/23/22 11:43pm Tech Issues
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