Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > Search Forums
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Showing results 1 to 50 of 822
Search took 0.02 seconds.
Search: Posts Made By: hclarkx
Forum: Class A Motorhome Discussions 09-30-2021, 11:33 PM
Replies: 51
Views: 4,445
Posted By hclarkx
Okay, my peeve is bicycles. DW and I take the...

Okay, my peeve is bicycles. DW and I take the back roads; avoiding highways and congested areas like the plague. So we see bicycles a lot. Too often they are enforcing their rights by riding on...
Forum: RV Systems & Appliances 09-30-2021, 11:09 PM
Replies: 137
Views: 9,155
Posted By hclarkx
My son has a Gree 9K Saphire SEER 38 on his 34'...

My son has a Gree 9K Saphire SEER 38 on his 34' motor home. The SEER rating is not applicable unless one is full time and stays at one location year-round. But, the EER is 16.5, one of the best...
Forum: Boondocking 09-29-2021, 11:08 PM
Replies: 11
Views: 502
Posted By hclarkx
You'll be okay, but plan for expansion. Almost...

You'll be okay, but plan for expansion. Almost making it through without the generator will get old and with the low cost of solar, you may be going 200 or 300 in short order.

Arrange the panel...
Forum: Going Green 09-29-2021, 12:41 AM
Replies: 24
Views: 698
Posted By hclarkx
Unfortunately, devices like the Multiplus are...

Unfortunately, devices like the Multiplus are very inefficient. Below 85% is not uncommon. Also, Wattage is calculated from voltage and current, so if either of those is not accurate, the Wattage...
Forum: RV Systems & Appliances 09-29-2021, 12:33 AM
Replies: 137
Views: 9,155
Posted By hclarkx
X2 and no more back operations (or weeks on pain...

X2 and no more back operations (or weeks on pain killers trying to avoid an operation).
Forum: RV Systems & Appliances 09-29-2021, 12:31 AM
Replies: 137
Views: 9,155
Posted By hclarkx
One of the reasons I went 100% boondocking/dry...

One of the reasons I went 100% boondocking/dry camping ...... I can avoid neighbors running generators over long hours.
Forum: Going Green 09-28-2021, 01:09 AM
Replies: 24
Views: 698
Posted By hclarkx
That's disturbing. I don't know what BB is...

That's disturbing. I don't know what BB is thinking. Resistance is irrelevant. The circuit (i.e., wire) from the Victron Multiplus to the battery carries the current the Victron Multiplus is...
Forum: Going Green 09-28-2021, 12:52 AM
Replies: 24
Views: 698
Posted By hclarkx
The capacitors only need pre-charging when you...

The capacitors only need pre-charging when you close the circuit breaker to make power available to the inverter. After that, you can turn the inverter on and off as often as you wish and the...
Forum: Going Green 09-28-2021, 12:37 AM
Replies: 24
Views: 698
Posted By hclarkx
Likewise. Mind boggling. Trade one problem for...

Likewise. Mind boggling. Trade one problem for another.
Forum: RV Systems & Appliances 09-27-2021, 02:00 PM
Replies: 137
Views: 9,155
Posted By hclarkx
Your questions and posits were fine until #14. ...

Your questions and posits were fine until #14. #14 is okay except for your claim that LiFePO4 is worth looking at only for large installs. If I had a tent trailer I'd have a 50 Ah LiFePO4.

You...
Forum: RV Systems & Appliances 09-27-2021, 01:45 PM
Replies: 137
Views: 9,155
Posted By hclarkx
One can buy three 100 Ah (1300 Wh each) for not...

One can buy three 100 Ah (1300 Wh each) for not much over $1000. Buyer beware, but decent ones are out there.

He may have gone DIY. This past spring I bought 11 kWh for under $1300. And three...
Forum: RV Systems & Appliances 09-27-2021, 01:35 PM
Replies: 137
Views: 9,155
Posted By hclarkx
Check the forums on this. I think it's been...

Check the forums on this. I think it's been covered. If you can adjust absorb time, it will work. FLA/AGM Bulk and float voltages will work. Only absorb needs to be eliminated or greatly reduced.
Forum: Going Green 09-26-2021, 11:16 PM
Replies: 24
Views: 698
Posted By hclarkx
Not using 4/0 cable is a really poor way of...

Not using 4/0 cable is a really poor way of limiting the capacitor inrush current! As you are aware, resistance is needed to limit the capacitor inrush current but higher resistance cables is not...
Forum: Going Green 09-25-2021, 08:26 PM
Replies: 24
Views: 698
Posted By hclarkx
The BMV-712 has a zero current calibration...

The BMV-712 has a zero current calibration procedure but I think not one that affects higher readings (beyond whatever offset the zero current error is). It wouldn't hurt to check that it reads zero...
Forum: RV Systems & Appliances 09-24-2021, 12:07 AM
Replies: 137
Views: 9,155
Posted By hclarkx
A lot. Far from marginal. And I don't need a...

A lot. Far from marginal. And I don't need a face shield/safety glasses when working around my LiFePO4.
Forum: RV Systems & Appliances 09-22-2021, 10:20 PM
Replies: 137
Views: 9,155
Posted By hclarkx
Lots of benefits/advantages to LiFePO4. I'll try...

Lots of benefits/advantages to LiFePO4. I'll try to summarize .....

Advantages:
Safer than acid (it's the BMS)
Self-protecting (it's the BMS)
Requires less solar (about 35% less)
Charges far...
Forum: Going Green 09-21-2021, 11:01 PM
Replies: 8
Views: 424
Posted By hclarkx
Got it. Good plan. You are correct on the...

Got it. Good plan. You are correct on the benefits of higher voltage AND parallel paths. And $100 for 100W Renogy panels is a good deal. My son and I got latest 200W name brand panels for $150...
Forum: Going Green 09-21-2021, 02:24 PM
Replies: 8
Views: 263
Posted By hclarkx
With that handle, "Zapp," it pays to be...

With that handle, "Zapp," it pays to be cautious!
Forum: Going Green 09-21-2021, 02:13 PM
Replies: 8
Views: 424
Posted By hclarkx
Your are golden. The #8 is good for well...

Your are golden.

The #8 is good for well over twice the current you will put on it.

Voltage drop between the panels and the solar controller is not a problem in that the solar controller...
Forum: Going Green 09-10-2021, 06:33 PM
Replies: 6
Views: 592
Posted By hclarkx
Surprisingly few responses here .... so I'll add...

Surprisingly few responses here .... so I'll add more:

The charge rate on sunny days is a sine wave. On clear days you will get around 12 hours of solar (longer in summer, shorter in winter) with...
Forum: Going Green 09-09-2021, 12:25 AM
Replies: 6
Views: 592
Posted By hclarkx
RJ, are you handy with a spreadsheet like Excel? ...

RJ, are you handy with a spreadsheet like Excel? If so, you might want to play with one that I've written. It uses solar and weather data from NREL's PVWatts on-line software to estimate energy...
Forum: Going Green 09-07-2021, 08:02 PM
Replies: 7
Views: 318
Posted By hclarkx
You might get away with adding a parallel panel...

You might get away with adding a parallel panel that is different from the old ones. For the panels to work satisfactorily together, the new panel must match the full power voltage rating of the...
Forum: Going Green 09-06-2021, 12:23 AM
Replies: 4
Views: 324
Posted By hclarkx
It sounds like you have looked at all options. ...

It sounds like you have looked at all options. My only thought would be to take a closer look at the tank vent(s). I was able to drop my two #10s down along a vent pipe then out into the back of a...
Forum: Toy Haulers Discussion 09-06-2021, 12:16 AM
Replies: 38
Views: 2,465
Posted By hclarkx
I agree fully. In my case the two sets of panels...

I agree fully. In my case the two sets of panels were each in its own plane on opposite sides of a crowned roof. So I avoided mixing panels with different angles to the sun as well as having two...
Forum: Boondocking 09-04-2021, 11:04 PM
Replies: 21
Views: 1,327
Posted By hclarkx
Our 5er has three waste and one fresh tank, all...

Our 5er has three waste and one fresh tank, all roughly 40 gallons. So I can use about 120 gallons of fresh, three times what the RV holds.

Our first shot was seven 7 gallon blue jugs. Used the...
Forum: RV Systems & Appliances 09-04-2021, 12:23 AM
Replies: 4
Views: 198
Posted By hclarkx
X2 what Ed said. There's no getting around a...

X2 what Ed said. There's no getting around a proper inspection and analysis of how the existing panels were connected, whether the new panel was connected properly, and whether the new panel will...
Forum: Toy Haulers Discussion 09-03-2021, 11:10 PM
Replies: 38
Views: 2,465
Posted By hclarkx
At my first significant upgrade, from 400W to...

At my first significant upgrade, from 400W to 600W I went to two 300W arrays and two controllers largely for reliability.

Yes, when the voltage rises during bulk, the controllers just see the...
Forum: Toy Haulers Discussion 09-03-2021, 12:00 AM
Replies: 38
Views: 2,465
Posted By hclarkx
Mark, The several sets of panels are each...

Mark,

The several sets of panels are each connected to a solar controller and the several solar controllers are connected to the battery. They are effectively in parallel on the output side. I...
Forum: Going Green 08-23-2021, 12:35 PM
Replies: 6
Views: 511
Posted By hclarkx
I'm not sure any of us answered your second...

I'm not sure any of us answered your second question about 100 Ah and 300 Ah. The answer there is also yes. The 300 Ah battery might even be made from three parallel 100 Ah cells in which case you...
Forum: Going Green 08-22-2021, 12:41 AM
Replies: 8
Views: 394
Posted By hclarkx
You aren't underthinking it. You've covered most...

You aren't underthinking it. You've covered most of the "data" you need to size a system. From late sun to morning sun your use comes from the battery. You need enough solar to cover that AND...
Forum: Going Green 08-22-2021, 12:12 AM
Replies: 18
Views: 740
Posted By hclarkx
I wonder why they said the 14V absorb voltage...

I wonder why they said the 14V absorb voltage will never be reached? Indeed it won't if HVD is set at 13.88V. But, absorb is the voltage at which bulk mode is terminated and the SCC goes into...
Forum: Going Green 08-21-2021, 11:57 PM
Replies: 18
Views: 740
Posted By hclarkx
I only have experience with the BMS in the...

I only have experience with the BMS in the Lifeblue and the Overkill BMSs. The overkill BMSs have a thermal sensor and bluetooth is now standard as is heavier wiring. The data you can access with...
Forum: Boondocking 08-20-2021, 11:47 PM
Replies: 19
Views: 972
Posted By hclarkx
Makes sense, but one caveat. If both bank 1 and...

Makes sense, but one caveat. If both bank 1 and bank 2 are LiFePO4 this kind of switching poses a problem. With LiFePO4 the current between the banks, when joined by the switch will be huge if the...
Forum: Boondocking 08-20-2021, 11:40 PM
Replies: 19
Views: 972
Posted By hclarkx
LiFePO4 are not all that heavy. Even 8...

LiFePO4 are not all that heavy. Even 8 battleborn 100 Ah would be only 240 pounds. But, even at 240 lbs, I agree this is something to worry about. Putting 240 lbs near the rear bumper puts 480...
Forum: Going Green 08-20-2021, 11:07 PM
Replies: 40
Views: 2,513
Posted By hclarkx
Interesting opportunity. For me they would be a...

Interesting opportunity. For me they would be a non-starter. LiFePO4 prices are dropping and even today are good enough that they are worth the premium.

Sealed, clean
Lighter
Smaller
Zero...
Forum: Going Green 08-20-2021, 10:53 PM
Replies: 18
Views: 740
Posted By hclarkx
This is smart thinking. My batteries are in an...

This is smart thinking. My batteries are in an unheated compartment with a large outside wall and so are not all that well protected from the outside temperature. We've been in low 20's and the...
Forum: Going Green 08-20-2021, 10:39 PM
Replies: 18
Views: 740
Posted By hclarkx
I'm more than curious. Do you know what the...

I'm more than curious. Do you know what the actual problem is? What is going on that can cause the BMS to disconnect? Seems it has to be excess voltage, trying to charge at a too low temperature,...
Forum: Going Green 08-19-2021, 11:35 PM
Replies: 9
Views: 277
Posted By hclarkx
The reason the input does not use the neutral is...

The reason the input does not use the neutral is because it's a 230V input. Apparently the Sungold inverter generates it's own neutral for the output. This makes sense, since in inverter mode, it's...
Forum: Going Green 08-19-2021, 11:16 PM
Replies: 18
Views: 740
Posted By hclarkx
I believe the Grade A cells you linked to are...

I believe the Grade A cells you linked to are $512 per cell. Over $2000 for a set of four. I have 12 280 Ah Grade B cells that were $439 for each set of four including shipping. Out of the 12,...
Forum: Going Green 08-19-2021, 10:39 PM
Replies: 14
Views: 712
Posted By hclarkx
Nice. BTW, be sure no stainless is in the...

Nice. BTW, be sure no stainless is in the current path. SS has about 20 times higher resistance than aluminum so, maybe 40 times the resistance of copper? I had some SS in the current path during...
Forum: Going Green 08-19-2021, 02:11 PM
Replies: 12
Views: 294
Posted By hclarkx
There are very few horror stories about early...

There are very few horror stories about early demise of LiFePO4 batteries. Though it's common to worry about damage from charging below 32F, one does not read of anyone experiencing this. And, of...
Forum: Going Green 08-19-2021, 01:57 PM
Replies: 12
Views: 294
Posted By hclarkx
That article is a bit old in terms of LiFePO4...

That article is a bit old in terms of LiFePO4 technology development and I'm not sure it was correct even six years ago. My Lifeblue specification is well under one percent per month IIRC, and that...
Forum: Going Green 08-18-2021, 12:32 AM
Replies: 40
Views: 2,513
Posted By hclarkx
Agree. And the clipping that occurs is pretty...

Agree. And the clipping that occurs is pretty minimal unless you "overpanel" by more than about 140% AND spend a lot of time out in June or July. One can use the National Renewable Energy Lab...
Forum: Going Green 08-17-2021, 04:00 PM
Replies: 6
Views: 511
Posted By hclarkx
I would give it a try but monitor the batteries...

I would give it a try but monitor the batteries individually if you can. I've done it and had no problem.

Here's some details.

When you charge two differing parallel LiFePO4 batteries, both...
Forum: Going Green 08-17-2021, 03:33 PM
Replies: 12
Views: 294
Posted By hclarkx
Interesting observation. I would hope Jeff's...

Interesting observation. I would hope Jeff's Paxcess unit has a charger that at least drops down to a float voltage after bulk charging, but you are correct, that even a float voltage (13.4 or...
Forum: Going Green 08-17-2021, 03:14 PM
Replies: 40
Views: 2,513
Posted By hclarkx
I'm confused about your energy audit results. ...

I'm confused about your energy audit results. You are saying you can use 400-500 Ah at 24V between end of one solar day and the beginning of the next? That's huge. 450 Ah at 24V is 10,800 kWh. ...
Forum: Going Green 08-17-2021, 02:05 PM
Replies: 14
Views: 712
Posted By hclarkx
Paul, Nice battery setup. Very neat. I'm...

Paul,

Nice battery setup. Very neat. I'm curious though, the red bar picks up the positive terminals of each 12V pair and is supported above the terminals in order to clear the negative...
Forum: Going Green 08-13-2021, 12:37 AM
Replies: 14
Views: 712
Posted By hclarkx
An idle thought ...... when connecting LiFePO4...

An idle thought ...... when connecting LiFePO4 batteries in parallel, whether by cable or busbar, it's essential that they be at the same SOC and voltage when the connection is made. This means...
Forum: Going Green 08-11-2021, 12:45 AM
Replies: 25
Views: 1,050
Posted By hclarkx
That continues to sound like my higher resistance...

That continues to sound like my higher resistance 280 Ah cell. It balances fine, but the voltage on it runs high during charging and low during discharging. Just as it would if that cell had a...
Forum: Going Green 08-09-2021, 11:54 PM
Replies: 19
Views: 807
Posted By hclarkx
Our inverter addition was driven mostly by...

Our inverter addition was driven mostly by wanting microwave but would have been needed soon enough for an expresso machine that was an RV house warming gift from our daughter. We installed a modest...
Showing results 1 to 50 of 822

 
Forum Jump
» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:27 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.