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 > Your search for posts made by 'dave17352' found 101 matches.

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RE: Lithium batteries questions?

What about Trojan Trillium batteries. I think you can use them in with your alternator no problem
dave17352 07/13/19 04:40pm Class C Motorhomes
RE: 12 volt dc / 120 ac appliance

My nova kool switches to ac power when ever I am on shore power. Mitch you are talking a propane fridge I am talking a compressor fridge. But I think you new that. :)
dave17352 06/30/19 09:26pm Tech Issues
RE: 12 volt dc / 120 ac appliance

Run it on DC ! Now I will really confuse you !! The Danfoss "control box" actually convert 12VDC to 3 phase AC. I kinda wondered how that happened. !
dave17352 06/30/19 04:27pm Tech Issues
12 volt dc / 120 ac appliance

This topic has been moved to another forum. You can read it here: 29919981
dave17352 06/30/19 02:00pm Technology Corner
12 volt dc / 120 ac appliance

My dan foss 12 volt refer also switches to 120 when plugged in. So which is better. 12 volt dc or using my 2000 watt inverter and running it on AC. This model draws 5 to 6 amps DC. I have a 8 gauge wire about 8 foot long running to the refer for DC. Thanks Dave
dave17352 06/30/19 02:00pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

Ambient cooler and or cloudy days will still make for a cooler panel. Which will make for higher voltage. But of course if it is cloudy we won't be getting much current :(
dave17352 06/28/19 08:48pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

With PWM you get Isc value for amps to the battery. Flat on roof will not get as many as aimed. With MPPT it is all about watts. Let's say you have 300w aimed (series or parallel makes no diff) You lose 10% of your watts due to panel heating. So now you are at your 270 watts. Lose say 2% wiring loss from array to controller (which is pretty good) Now at 264.6 watts. Controller efficiency say 97% (it could be more like 95%) so now at 256.7 watts output. Amps to battery is output watts/ battery voltage (assuming no wiring loss on that leg) 258/13 = 19.8 258/13.5 =19.1 258/14 = 18.4 With panels flat on roof you start with less than 300 then lose the 10% for heat and go from there. The PWM does not lose amps from heat, in fact amps go up slightly, so you don't lose. Still get same as whatever Isc is at the time. Only good reason to get MPPT instead of PWM for that sort of work is if you get one 300w panel instead of three 100s. Now you must have MPPT to get the buck converter in it so you can go from 24v panel to 12v battery. And, in the above calculation where controller efficiency is mentioned, don't forget the efficiency is lower when dropping voltage, so 24-12 loses more than 12-12. That might be a good reason to stay in parallel with the three 100s and MPPT. However, it can be wiring gauge that makes a practical difference to your installation plan. Just don't expect a bunch of amps that won't ever happen in real life. Well we will see. The higher voltage will have less resistance. I payed 89 bucks for the mppt and I can go from series to parallel if I want to get to the nitty gritty. But knowing that I was seeing 10 amps before if I see 18 to 20 now I will call it a win! :) It is not always extremly hot when I am camping. Many times it is nice and cool which would negate the panel heating loss. All in all in will be a interesting experiment. Solar is fun that I know for sure.
dave17352 06/28/19 07:18pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

Going in series and mppt should double my panel output. not sure what you mean by this.. Adding another panel will double your output. Right now I have 2 100 watt panels with a pwm charger so max I can get is about 10 amps. With 3 100 panels and ( I am adding one) and a MTTP charger I can utilize all the volts. So lets say I am drawing 270 watts /14 volts roughly 20 amps. The mttp charger makes all the difference. I guess I should have said by going with the mttp and adding one panel I can harvest twice the energy. :) Actual results--three 100w panels in parallel with PWM aimed at high sun, you get 6.2 amps (same as Isc) each for 18.6 amps. Swap to an MPPT controller with them in parallel--still 18-19 amps, change to series with the MPPT, still 18-19 amps. You lose panel watts from panel heating, so your MPPT "advantage" disappears. You can get a little more amps with MPPT when the battery is low, but not enough to change your day's haul of AH that you would notice between battery 13 and 14.5 volts like you see RVing. I am going to be going in series with these panels now. My Panels are rated and 5.29 amps at 18.9 volts. I have used these panels for two years and the most I ever get is 10 amps. With these panels in series at peak light I hope to get close to 270/14= 19.28 amps. I think I will gain about 5 amps overall. But we will see and I will update how many amps I see. I have done a lot reading on the net and it seems to be the concensus that series and mppt will net me a worthwhile gain. You seem to be saying the extra voltage over the charging voltage is of no value. Interesting.
dave17352 06/28/19 06:31pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

Going in series and mppt should double my panel output. not sure what you mean by this.. Adding another panel will double your output. Right now I have 2 100 watt panels with a pwm charger so max I can get is about 10 amps. With 3 100 panels and ( I am adding one) and a MTTP charger I can utilize all the volts. So lets say I am drawing 270 watts /13 volts roughly 20 amps. The mttp charger makes all the difference. I guess I should have said by going with the mttp and adding one panel I can harvest twice the energy. :) Actual results--three 100w panels in parallel with PWM aimed at high sun, you get 6.2 amps (same as Isc) each for 18.6 amps. Swap to an MPPT controller with them in parallel--still 18-19 amps, change to series with the MPPT, still 18-19 amps. You lose panel watts from panel heating, so your MPPT "advantage" disappears. You can get a little more amps with MPPT when the battery is low, but not enough to change your day's haul of AH that you would notice between battery 13 and 14.5 volts like you see RVing.
dave17352 06/28/19 06:02pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

Going in series and mppt should double my panel output. not sure what you mean by this.. Adding another panel will double your output. Right now I have 2 100 watt panels with a pwm charger so max I can get is about 10 amps. With 3 100 panels and ( I am adding one) and a MTTP charger I can utilize all the volts. So lets say I am drawing 270 watts /13 volts roughly 20 amps. The mttp charger makes all the difference. I guess I should have said by going with the mttp and adding one panel I can harvest twice the energy. :)
dave17352 06/28/19 04:29pm Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

Thanks all for the opinions. I have ordered my new Epever 30 amp mppt controller and new solar panel. Going in series and mppt should double my panel output. :) WAX I may put the mppt in the cabin for just your reason. I have ordered a 12 volt fan for the comppartment temperature controlled. All though all this may not get much use it sure is fun. I enjoy messing with solar! thanks Dave
dave17352 06/28/19 05:15am Tech Issues
RE: Inverter in repurposed generator locatoin with agm batteries

All though agm's should not out gas except if extreme overcharging occurs. NOT TRUE ! AGM batteries WILL VENT (out gas) under "extreme overcharging". If they did not, they would explode. Are we not saying the same thing?
dave17352 06/28/19 05:04am Tech Issues
Inverter in repurposed generator locatoin with agm batteries

I am thinking about upgrading my solar some and this is my plan. I will locate my 2 agm deep cycles, 30 amp mppt solar controller and 2000 watt inverter all in the old generator location that I removed several years ago. Presently there is just one agm in there now. The generator comppartmment is well vented as the orignal door is on the compartment. There is plenty of room for this equipment and air movement. My concerns are All though agm's should not out gas except if extreme overcharging occurs. It still makes me a little nervous. The second concern is The propane compartment is above the genrator compartment. That kind of makes me nervous. Like what if the propane leaks and falls and kinda get side tracked into the generator compartment below. Of course the original design had the generator running below the propane:). So what do you all think? This is on my 98 Lance Truck Camper Thanks Dave
dave17352 06/26/19 06:31pm Tech Issues
RE: How is this for a power system? Solar vs battery balance?

Double at least on the solar, unless you plan on only two day trips.
dave17352 06/17/19 05:15am Truck Campers
RE: Solar and Lifeline

!2.7 volts is fully charged. Dropping to between 12.4 and 12.7 with a 15 amp load sounds completly normal to me.
dave17352 04/29/19 07:42pm Tech Issues
RE: 2018 F350 CB Antenna Front Bumper Mount

I bought a good cb about 15 years ago. I didn't find to many people using them so I leave it at home now. I think I wuld find that antenna would be driving me nuts right in middle of the windshield! With the antenna there i would think you would get fine reception in front of you and almost no reception in back with the truck camper mounted. JMHO So is it mostly truckers you talk with on the road?
dave17352 04/29/19 07:30pm Truck Campers
RE: Question on Truck Campers

As others have said not much of a option. I have a window big enough and 25 years ago I had a truck camper with a window big enough and my wife did indeed slip back and forth a few times. But she is small and was young at the time:) Not a real option. JMHO I never fit or even tried!
dave17352 04/28/19 08:30am Truck Campers
RE: Bye Bye DuraMax

There is no doubt the duramax diesels are great power houses. The reason I traded my 2011 for a 2017 is it only cost me 6k for the new truck when I traded. To me that was well worth it. Two years later I have 7k miles on the new truck. I didn't mind at all getting the 6.0 as I wanted something simple that worked and worked well. For my TC and boat it is a fine choice at low cost. My two duramax trucks which I truly loved for towing and hauling had both been in the shop several times for def and dpf filter problems. I previously had a 2008 before the 2011. The 2011 actually had me in limp mode a couple times. The def is not a big deal and I love the wonderfully clean exhaust but I do like not having to deal with that anymore. The final straw for me was when my mechanic who had a 2011 duramax had his high pressure fuel pump fail and he of course replaced it. He said if I was going to keep mine I should replace the fuel pump for about 4k or risk a 10 to 12k repair if or as he said when it goes. I should also mention I had a 2005 ford 6.0 powerstroke. It blew its head gaskets at 40k. So when the other fella mentions drama these are the types of issues I think of with diesels. All three diesels where bought new and all had problems with very low miles. I have probably had 10 new gasser trucks and they were all virtually trouble free. All that being said if I was going to haul anything big big like over 12k and a lot of miles I would be trading for a diesel tomorrow. JMHO
dave17352 04/22/19 07:40pm Truck Campers
RE: Bye Bye DuraMax

I have the chevy 6.0 in my signature and usually have my TC and boat in tow. Plenty of power for what I do. It is not the same as my mighty 2011 Duramax, but does a fine job and I do not regret the switch. Its just simpler. JMHO
dave17352 04/21/19 08:47pm Truck Campers
RE: Norcold Refrigerator

That sounds like a thermal coupler gone bad. It has to get and stay hot to keep the gas flowing. If is bad the gas shuts off. JMHO
dave17352 04/15/19 07:05pm Class A Motorhomes
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