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RE: how to replace the charger inverter in a four winds
I prefer a deck mount instead of replacing the lower portion (MBA ) with another.
Good price here - note the shipping too
https://www.boatandrvaccessories.com/products/powermax-pm3-60lk-12-volts-60-amp-power-converter-battery-charger-w-led-light?_pos=4&_sid=a37eb4405&_ss=r
There are other choices of course.
For the monitor that shows amps, there are many of them too. I have a lower cost one called "Renogy 500Amp" that shows amps and volts like you want for charging AGMs--or any other battery type.
BTW you don't have to yank your existing converter and put the deck mount in there. A deck mount can go anywhere handy--closer to the batteries the better. Does need 120v for it near enough for its power cord to reach.
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BFL13
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05/22/22 10:50pm |
Tech Issues
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RE: SiO2 Batteries and High Amp Draws
High draw per capacity ability and higher charging efficiency are different things
LFP has both; SiO2 has the first, not so much
of the other AFAIK but will know when I plot a charging profile
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BFL13
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05/22/22 07:13pm |
Tech Issues
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RE: Twisted Truck? UPDATE-Fixed!
It was Grit dog at 0825, now showing on mine. Whatever works! :)
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BFL13
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05/22/22 06:43pm |
Truck Campers
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RE: SiO2 Batteries and High Amp Draws
Actually have almost no info on LFP charging profiles. To understand your data above, would also need the charging voltage and whether it reached that when tapering started.
Sometimes tapering starts "early" as was seen with PD some PD converters not holding constant amps in Bulk, and is not related to the classic Bulk/Absorption transition.
There is a need for some plotting and graph making to get the picture clear. :)
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BFL13
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05/22/22 05:50pm |
Tech Issues
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RE: SiO2 Batteries and High Amp Draws
Yes they survived a year of floating ok.
With one I had to use the 20 amp setting on a Vector charger but with two I can use the 55 amp converter
I see that Alberta LFP says 60 amps limit so would need the 55 amper and not use my 75 amper. I guess it has the under-sized BMS you guys were talking about
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BFL13
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05/22/22 04:48pm |
Tech Issues
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RE: SiO2 Batteries and High Amp Draws
I got the SiO2s in late 2020
Seldom used since with covid reducing dog events. Took the TC out myself the other day to see that it all still works now things are starting up again
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BFL13
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05/22/22 02:29pm |
Tech Issues
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RE: how to replace the charger inverter in a four winds
Please clarify your terminology. You likely have a "converter", not an "inverter/charger" . There is no such thing as a "charger inverter"
You likely have a single stage (13.7ish volts) Parallax 7300 converter in the 2006 Class C, or perhaps an Iota or PD or WFCO version of the same thing.
You can't meet the AGM battery charging specs with the plain version of one of those. You will need a charger that can do 14.4 volts and you will need ammeter to measure when charging gets down to 1/2 an amp per 100AH of battery. Easiest way to do that is with a battery monitor that shows amps.
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BFL13
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05/22/22 01:52pm |
Tech Issues
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RE: Twisted Truck? UPDATE-Fixed!
Note from OP --I see a new post came in this morning four hours ago, but it is not showing on my read-out yet. It might show up eventually. So in case somebody thinks I am ignoring him, that's not it. This seems to happen with certain posters for some reason. Area 51 thing?
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BFL13
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05/22/22 01:41pm |
Truck Campers
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RE: Renogy Battery Monitor vs Trimetric UPDATE- Camping Test
I thought the Renogy monitor's "battery attenuation ratio" was just fractured English and might mean charging efficiency, but for fun I Googled the term and it is real!
Renogy: ("Battery Attenuation Ratio: After the battery Capacity cumulatively once per cycle, The capacity value is automatically changed according to this ratio.")
(I saw where they use "machine translation" )
Unfortunately the articles I read on that made no sense to me even when written in English.
"Attenuation" apparently just means losing capacity from rated full even when doing a discharge. The Ratio idea might be Peukert or maybe how many cycles before it is down to 80% as for LFPs--??? All very confusing.
My plan is to leave that setting alone and hope nothing bad happens :)
Charging Efficiency is related to internal resistance of the battery. This varies among battery types and SOC when being charged and discharged and by what rate of charging or discharging.
Best plan for monitoring would be to recharge to full as often as possible and get the monitor to say the batts are full at that time. "reset" or "synch"
If you are off-grid and never manage to get your batts full for a long time, but just have them go down and up then the monitor will go out of whack. Just have to be aware of that and do the morning voltage cross check as mentioned before. Eventually the voltage version of SOC will be your only guide and not the monitor's version of SOC
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BFL13
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05/22/22 01:25pm |
Tech Issues
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RE: Tires? Balance or Alignment
No idea if applies here, but when we had the 5er, there was a thing about how they balanced the 5er tires or didn't bother, for what counted as being in the middle. ISTR about an adapter to their usual balancing thingy for "concentric" or not ?
Probably means nothing for here, but tossing it in anyway.
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BFL13
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05/21/22 06:59pm |
Tech Issues
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RE: SiO2 Batteries and High Amp Draws
Humm..I have a 1500 watt Wagan msw on one 120ah lfp and a 1000 watt Wagan psw on a 100ah lfp with my third 100ah lfp house battery with a 300 watt Giandel psw..Something for each battery with solar for each battery..
Different but it works for the way I use things
I am guessing you can swap around as needed if one gets too low, but another still has some spare AH
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BFL13
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05/21/22 06:46pm |
Tech Issues
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RE: Atwood Water Heater
Sounds like the classic by-pass forgot to put them back to normal after winter ?
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BFL13
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05/21/22 04:30pm |
Tech Issues
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RE: Tailgate for a truck camper
Our 2003 Chev had that recall No idea how strong the stubs are they hook onto
Tail gate on and off every time to use the truck That tail gate is getting heavier as I get older
Even if the camper fits in, the tailgate can get in the way of the camper steps
The OP will find out if he can get the crank in to lower the spare tire OOPs ?
It only takes a few times to remember to swap the licence plate to the camper Before loading it onto the truck. :)
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BFL13
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05/21/22 04:08pm |
Truck Campers
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RE: Twisted Truck? UPDATE-Fixed!
No that is plugged into the inverter all inside. Converter unplugged of course.
You might be seeing the mess showing on page 3 of the Lance DC-DC thread scroll down
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BFL13
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05/21/22 03:21pm |
Truck Campers
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RE: SiO2 Batteries and High Amp Draws
We should be clear that 200AH of SiO2 does not equate to four 6s, except for the high draws. You still need AH for regular RV draws and for that work 200 is not the same as 460!
That is why I needed the second battery even though the one batt could do the high draws. Not enough AH for the regular camping for a weekend in this case.
Same thing could happen to somebody buying a 100AH LFP. Doesn't matter what it can do for features--it is still only 100AH so if you need more AH for the regular stuff it is very expensive to have to get a second one just for that work.
I tried a work- around for that in one of my set-ups, by having the inverter on just the one batt and have cheaper regular batts in a separate bank for the regular stuff.
So of course the regular stuff bank got low, but I could not tap into the inverter's batt to get more AH to help run the regular stuff. Better to have one big bank that does it all. (Such as in the Class C with four 6s)
Just to be clear and not confuse anybody.
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BFL13
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05/21/22 02:32pm |
Tech Issues
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RE: Twisted Truck? UPDATE-Fixed!
Used carpenter's level with truck sitting same as in OP photo. Confirmed the front of the truck is leaning to the right a bit while the camper is leaning to the left a bit. It was level front to back (on the left side anyway). Same as the camper bubbles say roughly.
(If you ever tried to put bubbles on an RV you know RVs are not built they way they ought to be, so if one place is level another place is off. I picked near the stove top for setting the bubbles outside, and that's that)
OK, so as suggested I drove back off the one ramp front left. Now the camper and truck were aligned above the cab--no twist. (Sorry, Chubby Checker!) Camper was low on the left and low to the front.
This time I used one ramp at the back left tire and the camper was level sideways, but even lower to the front. Still even up front no twist.
Put two more ramps down in front--had to try a couple times to get them the right distance out front of the tires so the front of the truck got to the proper height while the back rode up to its proper height on the left rear-- and Ta Da! The camper bubbles are good both ways and the truck is not twisted it seems.
I suppose the back right and left are not the same on their springs, no idea. That's as good as it is going to get.
Thanks very much for all the good advice everyone! :)
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BFL13
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05/21/22 12:17pm |
Truck Campers
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RE: SiO2 Batteries and High Amp Draws
StirCrazy, you are right about the cost etc. And LFPs do better for high draws.
I got sort of sucked in--sad tale of woe follows:
I got one for the camper when the scenario was to be 1 day trips to local dog things so DW has her own hideaway and bathroom. (Class C too big for that job) and I wanted the MW to work for her off the inverter.
At the time the 100AH SiO2 was $700 and a 100AH drop-in LFP was $1400. (They still are around here!)
Then DW said the new plan was to use the camper for weekend dog things so 100AH was not enough. Goal posts moved. Oh well.
So I decided I was stuck with having to get more battery and it had to be the same type (perhaps wrong on that, don't know). So got a second SiO2 for $500 this time on sale. (They must have wanted to unload some inventory before Xmas maybe) So now that is 200AH for $1200 vs 100AH for $1400.(200AH for $2800 yipes!) I also stole a solar panel off the Class C for the camper.
But now with 200AH bank the 55 amp draw of the MW could have been done by ordinary AGMs. 200AH AGMs about $500 then (700 now) Drat.
Water under the bridge and I do get to use the kettle at 90 amps as reported. That other guy on here wanted to start an SiO2 club, but there was no T-shirt so I didn't join. Maybe it was really a "support group" :)
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BFL13
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05/21/22 10:15am |
Tech Issues
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RE: Twisted Truck? UPDATE-Fixed!
Not sure this will prove anything, but here are photos taken the other day when on a site where I found the bubbles on the left back corner of the camper showed level both ways, without needing any blocks/ramps. (Bubbles set using a carpenter's level)
Truck has no air bags or extra springs. We got it new in Oct 2002. It drives ok. Been a while since new shocks. On scales with loaded camper, two people in cab, got:
Front- 1620 vs GAWR of 2041
Rear- 2450 vs GAWR of 2760
Total 4070 vs 4173 GVWR or (8954 vs 9200)
Empty truck 2720 so camper weighs 1350 (2970)
https://i.imgur.com/n4EBwL5l.jpg]https://i.imgur.com/n4EBwL5l.jpg
https://i.imgur.com/995ACl6l.jpg]https://i.imgur.com/995ACl6l.jpg
https://i.imgur.com/RL6eNhcl.jpg]https://i.imgur.com/RL6eNhcl.jpg
I will play with levelling it other ways in the back yard later on to see what happens.
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BFL13
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05/21/22 08:41am |
Truck Campers
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RE: SiO2 Batteries and High Amp Draws
I have not plotted a set of charge profiles for different charging rates. Spec limit is 27% and at that I saw tapering starts in the mid 80s, so a little faster than FLA but not in the 90s like LFP. Like an AGM. I will plot an ugly graph on that someday
There are some temp plots in the Azimuth info links don't know if answer to that is there
Yes to the four 6s comparison for high draws --not like two 6s that can only do it down to 75% SOC. You need 4 to do it at 50%.
I will get the Wonder Dog to do the ugly graph work. (Mex has camped here some years ago at Englishman River Falls park--if he is on here he might recognize it)
https://i.imgur.com/5CxvZ0Kl.jpg]https://i.imgur.com/5CxvZ0Kl.jpg
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BFL13
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05/20/22 09:53pm |
Tech Issues
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RE: Twisted Truck? UPDATE-Fixed!
Only tire up is the front left. Levels on back left corner of camper say the camper is almost level now with the truck front left up on the ramp
I suppose I could put ramps to both left sides to get it right sideways and then add more height to both fronts to get the front up. You can put planks down under the ramps to make them higher, so more planks under left front than right front in this case I guess.
But does being twisted really hurt the truck is the question for the lazy guy. :(
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BFL13
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05/20/22 07:20pm |
Truck Campers
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