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RE: Automatic, smart battery charger? , part 2

A thunderstorm just rolled in and it got dark enough to convince the controllers to switch to night charge state. https://i.imgur.com/0wD8Teel.png Notice that at 10:00AM, the blue line changed from Bulk(5) to Night(3). HTH; John
full_mosey 07/10/20 10:36am Technology Corner
RE: Lp stove not percolating coffee

Examine the innards of the percolator and you will see a dome shape at the bottom of the riser that brings the water up to the grounds cup. You must boil the water under the dome, not along the sides of the pot. HTH; John
full_mosey 06/13/20 07:28am Fifth-Wheels
RE: Magnetic Induction Cooking And Pacemakers?

Hi John, ... It is good to know there is an inverter microwave. Is the temperature continuously variable? i.e. can you "dial in" the watts? I believe you meant induction stovetop not microwave. There are 15 settings for heat. You can set the heat by Watts or Temperature. The Watts range from 100-1500; temperature ranges from 140-400F. My favorite feature. Sometimes you need to lift the pan to shake or flip the food. If you lift the pan off of this stovetop, it pauses and does NOT SHUT OFF right away! It will beep for about a minute. You may resume cooking instead of having to repeatedly redo your temp settings. Did I say I like this feature? HTH; John
full_mosey 06/13/20 06:40am Tech Issues
RE: Magnetic Induction Cooking And Pacemakers?

... Today I am busy. Tomorrow I order a single element cooktop. I will need to buy a magnetic sensitive sauce pan and griddle ... Mex; do yourself a favor and try to find an try to find an inverter type of induction stovetop. I tried a NuWave, only to learn I could not make a simple grilled cheese sandwich. What I got was charcoal darkness burned bread without melting the cheese. The problem was that NuWave, and many others, operate in an on/off manner that is best described as BLAST-FURNACE/OFF. This is impossible to run on a smaller inverter genny without the annoying alternate racing and then idling engine noise. An inverter type stovetop would not have the blast-furnace level bursts of power that might be dangerous to your pacemaker. I have one that I can run on a 1000W Magnum inverter because I can set the power level to 900W, verified by Kill-A-Watt. It is a Rosewill model RHAI 19002, 120V 60Hz 1500W. HTH; John
full_mosey 06/12/20 12:28pm Tech Issues
RE: Automatic, smart battery charger? , part 2

4000 watt-hours implies something like 350 amp-hours of batteries? I forget how many watts of solar you have. 620Ahs AGM and 400W solar. Details are in my profile. HTH; John
full_mosey 05/24/20 07:44pm Technology Corner
RE: Automatic, smart battery charger? , part 2

Good Morning! It won't take long to report success. https://i.imgur.com/bL63F2Kl.png Analysis: The 12.79 over night Volts look good. https://i.imgur.com/etRiUYUl.png Analysis: There was 1hr of ABS on 5/8 as scheduled. This is good. https://i.imgur.com/251u5arl.png Analysis: More than the base load of 48Ahs were returned to the bank. This is good. Conclusion: Good, good, and good. I am done for today, and done for at least a week when I check back to see if I have had a weekly CHARGE. HTH; John
full_mosey 05/09/20 08:46am Technology Corner
RE: Automatic, smart battery charger? , part 2

I would not be concerned as long as the voltage is getting to 14+ by mid afternoon. If the voltage stays above the green line... why is the controller not limiting the absorption time or going to float? Maybe I am misreading the graph. The battery Voltage has not reached the ABS set-point for 4 consecutive days. The 10-day history if the ABS set-point(regulation) is shown in the graph below: https://i.imgur.com/RfAvkqgl.png and the 10 day history of battery Volts is shown in the graph below https://i.imgur.com/H1q0Av0l.png. On the the days 5/4-5/7, the battery volts have been below the set-point(regulation) Volts. The controllers cannot begin ABS until the battery Volts reach the set-point Volts. Accordingly, Float cannot begin until the ABS has completed its daily-set-time in ABS. IOW, the controllers were in Bulk for the last 4 days. HTH; John
full_mosey 05/08/20 02:16pm Technology Corner
RE: Automatic, smart battery charger? , part 2

Good Morning! https://i.imgur.com/8Lo8GgKl.png Analysis: The 12.79 over night Volts look good. https://i.imgur.com/PP3o41bl.png Analysis: Still looking for ABS. This could be bad. The controllers never were able to raise the battery Volts to the ABS set-point for four days. My personal rule is to charge the batteries no less than once each 7 days. I will explain more below. https://i.imgur.com/aEHOC5rl.png Analysis: The Ahs look good as they are staying above the base load of around 48Ahs daily. Now you see why I posted the NOAA weather info. Overall Analysis: The project started out on 5/4 with a high Watt draw to see what I could get out of the solar panels during the draw. The inverter tripped due to low Voltage after about 4KWh were drawn(SWAG). At that point, I decided I might as well track the solar system's progress in recharging the bank. After the trip on 5/4, the solar system accumulated 37.4Ahs. When I use the term charge, I mean it as taken from the battery's specifications, not some marketing mumble speak, loosey goosey term such as boost or storage that you may find in some charger's specs. This definition of charge also encompasses the one half of one percent rule(.5%) found in the Lifeline manual under paragraph 5.4. IMHO, the battery has not been charged, neither per my battery's specs, nor met the .5% rule, for four(4) days. I ignore the wonderful over night Volts of 12.79! My batteries are not charged, yet. HTH; John
full_mosey 05/08/20 07:40am Technology Corner
RE: Can anybody tell me....

It wasn't all of you, just some of you and the remarks. If my question wasn't clear then someone could have said that. Anyway this is what I learned (and was looking for)..... The 2A reading is what was "being sent" to the batteries, even though it is sunny that is all the batteries needed at the time. When I turned on some lights and that number changed to 3.4A that is what was "being sent" to the batteries to compensate for the power being used. Don't know if I explained it right but I understand now. No. The amps for the lights go to them and not to the batteries as compensation. Any amps left over go to the batteries if they want any. The amps to the lights might go via the battery posts as wiring connections, but do not go down into/through the batteries like "amps to the battery" do. You can have the batteries wanting 5 amps and solar putting out(EDIT--scrub that!--make that "able to put out") 8 amps and turn 10 amps worth of lights on. The lights get their 10 amps, the battery not only does not get its 5 amps but has to supply 2 amps to the lights. The controller will show 8 amps output, and the battery monitor will show minus 2 amps. If you want the batteries to get anything you have to reduce the load (lights etc) to under 8 amps. At 3 amps for lights, now the batteries get 5 amps, which is all they will accept anyway. So you have 3 "free" amps to do something with. Thanks for posting that. I was a little gun shy to point out where the Amps actually go. :) Did campermama ever report where she installed the inverter, near the battery or near the television?
full_mosey 05/07/20 03:49pm Tech Issues
RE: Can anybody tell me....

I'm happy you figured that out. HTH; John
full_mosey 05/07/20 02:15pm Tech Issues
RE: Automatic, smart battery charger? , part 2

Looks to be working as designed. Should see float soon. I see no reason to count and track amp-hours once you know this is working. Now you can focus on camp activities instead of managing charge level of the battery. The Raspberry Pi 3B tracks for me. I just click on WWW links to see the graphs. No more time use than pushing buttons on a remote meter. Thank you for your comment. Of course, I agree! :) Actually, I am still waiting for ABS. Over night looks good, both controllers will schedule 1 hour ABS. https://i.imgur.com/JGlEOvCl.png No ABS yet! https://i.imgur.com/N7tdTeRl.png Lots of Ahs. https://i.imgur.com/jgMPOlJl.png REST OF TODAY Decreasing clouds. A slight chance of rain showers and isolated thunderstorms in the late morning and early afternoon. Highs in the upper 70s. South winds 10 to 20 mph. Chance of precipitation 20 percent. Will post status daily until an ABS charge is completed. Then I will be ready to believe Float. HTH; John
full_mosey 05/07/20 08:51am Technology Corner
RE: Can anybody tell me....

in laymen terms which of the icons or #s don't you get, the sun, the battery full icon, the usb icon, the numbers, the word flooded? I have no idea what I am looking at! The icon you call battery full, I took to be a solar panel. The Sun does not 'connect' to a battery! A controller connects to a battery. HTH; John
full_mosey 05/07/20 07:53am Tech Issues
RE: Can anybody tell me....

Campermama; Let me guess. you don't know what A and Ahs stand for? HTH; John
full_mosey 05/06/20 09:00pm Tech Issues
RE: Automatic, smart battery charger? , part 2

Good Morning! Here is the 5/6 overnight status of yesterday's(5/5) solar charging. https://i.imgur.com/fa0QGI3l.png What this says to me is that the 5/6 overnight low bank Voltage rose by .425V since the same time 5/5. 12.357 - 11.932 = .425 The 12.357 is below the orange line(12.4V trigger) and there will be NO float today. There is a chance of some ABS. The Ahs from solar on 5/5 https://i.imgur.com/EGR7Zqal.png The solar controller ws in bulk all day 5/5. https://i.imgur.com/AcZSQskl.png The missing Ahs left over from the 5/4 draw-down test are being replaced as designed. I am done today! :) What is interesting to me, is that I do not know how many Ahs are missing. HTH; John
full_mosey 05/06/20 09:16am Technology Corner
RE: Automatic, smart battery charger? , part 2

You went below the orange line so the solar ran at max voltage all day with no float. That is all you can do except to add more solar. IIRC I think my lines are drawn at 12.5 and 12.0 I apologize, I need an addendum: On the morning of the 4th, the controller(s) were automatically set for 1 hour abs. Basically, the controller(s) were unable to do this due to my testing. This graph shows that the solar charger(s) stayed in bulk all day yesterday(5/4). https://i.imgur.com/3Mg6qoMl.png And, this graph shows that the bank never reached 14V yesterday(5/4). https://i.imgur.com/pgEX7XJl.png HTH; John
full_mosey 05/05/20 11:42am Technology Corner
RE: Automatic, smart battery charger? , part 2

You went below the orange line so the solar ran at max voltage all day with no float. That is all you can do except to add more solar. IIRC I think my lines are drawn at 12.5 and 12.0 I am leaning towards possible overcharging being less harmful than sulphation. Plus, I did observe charging Amps over quite a while to try to achieve the one-half of one percent rule from Lifeline's manual. I don't have Lifeline. Mine are bought used at 5+ years old. Yes, it should run all day today in bulk or abs, and no float. I doubt that the battery will be above the 12.4V line overnight and the float will be cancelled tomorrow as well. This will repeat until the missing Ahs are restored. The 148Ahs showing yesterday were not enough to overcome the draw down. I let the A/C run until, at 10.9V, the inverter shut down. The batteries were willing but the inverter was weak. :) HTH; John
full_mosey 05/05/20 11:19am Technology Corner
RE: Best Truck Camper AGM battery?

Lithium can basically be burned to 0 and the bms will disconnect it. No. 20% state of charge is the minimum recommended for LI. Nor can they often be charged below 32 f (some a few degrees colder). Storage below -20 c (-4 f) is NOT recommended. Battle born told me going to 0 doesn't hurt it ... BB batteries have an internal battery management system(BMS) that shuts the battery off before actual zero is reached. This BMS also stops charging at a upper Volt limit. I believe this BMS will also not permit charging at a low temperature around 32F. The BMS prevents damage that would otherwise kill the Li. This is why you can charge them with a conventional charger. Some people with 12V fridges have found that the Li based battery system will shut down and ruin their food, when the FLA or AGM would still have been running. HTH; John
full_mosey 05/05/20 08:29am Truck Campers
RE: Automatic, smart battery charger? , part 2

Good Morning! A very different story this morning. https://i.imgur.com/O3OTApbl.png I ran a driveway test yesterday by running the A/C in the TT. I plugged the TT into the inverter in the van. It was a nice warm sunny day. I wanted to see what I could get from solar. Here is what solar produced yesterday. https://i.imgur.com/QnSMpWll.png It looks like my base load is around 48Ahs, or 2A average. I will give solar the next two days to restore the bank. HTH; John
full_mosey 05/05/20 07:11am Technology Corner
RE: How many Ah

Ok so I changed direction, I bought a ARB 50 quart fridge freezer, it draws .87amps @ 12v and should be adequate for the amount of food I need for two to three days. ... AFAIK, that ARB has a 12V compressor motor of the Danfoss design(Now owned by SECO). It is a fine fridge. I have a similar 50 quart ICECO JP50 with the SECO compressor. The running Amps on that compressor are from 5 to 4 Amps according to the specs and my clamp on meter. The .87A must be an average draw at a particular ambient temperature. You can also confirm this by running the ARB on 120VAC through a Kill-A-Watt.
full_mosey 05/02/20 11:44am Tech Issues
RE: How many Ah

You may want to use the divide by 10 rule-of-thumb when converting 120VAC Watts to 12VDC Amps. Example: 100W at 120V = 0.833A. If you use the times 10 method(10 * .833= 8.33) to estimate battery draw as 8.33, you will underestimate the effective draw. Instead use 100 / 10 =10Amps. The difference is at least an estimate of what needs to be put back into the battery. Like Mex says, it is an art. HTH; John
full_mosey 04/28/20 12:05pm Tech Issues
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