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 > Your search for posts made by 'Itinerant1' found 108 matches.

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RE: LifePO4 video

We all have different needs or wants and certainly some don't mind hauling around lead with the must do charging profile daily or weekly to get the "longevity" from the batteries. Our particular wants was (1) major weight savings, (2) not being a slave to the battery, (3) live/operate from solar for the majority of the time and not have to run to a power pole or use the generator for long extended periods of time. LFP checked those boxes for our wants. I thought the video does a well job with simplified answers for easy understanding. Start of video to 6:30, low temps @6:30 high temp/ degradation @8:30 cycling @9:30 longevity/ charge profile @11:30 balancing @12:50 floating @15:40 storage @17:40 cold cranking (which in reality doesn't really apply to lfp) terminology. What they touched on carries over to all of LiFePo4 basically which for some of us that have been using this chemistry for many years in a daily operating system know because we can see it in operation, but some of the new comers don't really understand it because they read somewhere bad information being parroted.
Itinerant1 01/06/20 11:38am Tech Issues
LifePO4 video

Here is a good new video (19:19) on LFP that should dispute some claims/ myths that get repeated on the internet from non user of LFP. With the CEO of Battleborn who seems like a straight shooter and not trying to push their product but explain lfp chemistry some. https://youtu.be/ywn-vBjKblI @ 9:27 talks about 10-90% use range. @ 12:45 talks about float. Plus a lot more info that some of use longer time users have seen or been using with in reason and not seeing no issues.
Itinerant1 01/05/20 03:32pm Tech Issues
RE: Tumbler fell out of RV door handle

If it's the 4 little screws that loosen up inside which causes the cover plate not to hold parts in place just take a drop of loctite on the screws. Use the blue grade... "Loctite Threadlocker Blue 242 is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. The product cures when confined in the absence of air between close fitting metal surfaces."
Itinerant1 12/26/19 08:26am Tech Issues
RE: Repost Honda 2000i Carb Job With Photos Must Read!!!!!

"If the longer tube (emulsion tube) does not drop out you can tap lightly on the side of the housing with the side of the screwdriver and it should drop out. These are almost always full of gunk. Notice that there are tiny holes on the side of the emulsion tube as well as down the center (2 pictures below)." Just a tip for this part incase the emulsion tube is really stuck, if you look through the choke side of the carburetor you can see the tip of the emulsion tube poking up gently push down and it will come out. Tapping on the side was doing nothing to release it. A brass bristled brush (like from a gun cleaning kit) worked well getting some hard deposits off.
Itinerant1 12/26/19 08:05am Tech Issues
RE: Repost Honda 2000i Carb Job With Photos Must Read!!!!!

Many thanks to the OP and repost for this very easy project and with many pictures. My older eu2000i was running rough and finally quit, I put this off thinking it was going to be a pain in the butt, boy was I wrong. No wonders it stopped working. https://i.imgur.com/SYM0mNgl.jpg https://i.imgur.com/gEAbozrl.jpg :S After giving everything a good cleaning with carb cleaner, some scrubbing with a brass brush, changing the oil & sparkplug. A few pulls and fired right up purring like a kitten. Maybe 45 minutes total. :B
Itinerant1 12/25/19 01:06pm Tech Issues
RE: Recs for Solar Cut Off Switch?

If needing to disconnect panels from system it's as easy as pushing a button. https://i.imgur.com/928BnVXl.jpg Actually, you should have two DC breakers like that, one between the solar panels and the controller, and one after the controller, before the inverter, so that you can completely isolate the controller from the system if need be. It looks like that's how this system is wired, and that's how I wired my system. From the PT controller manual...as an example. https://i.imgur.com/pZvk9Ksl.jpg https://i.imgur.com/jv6fIxrl.jpg
Itinerant1 12/10/19 04:47am Tech Issues
RE: Recs for Solar Cut Off Switch?

If needing to disconnect panels from system it's as easy as pushing a button. https://i.imgur.com/928BnVXl.jpg
Itinerant1 12/09/19 03:28pm Tech Issues
RE: Renogy 100ah LifePo4 Lithium - Max Surge Current

For what it's worth... https://www.ev-power.eu/blog/LiFePO4/LFP-as-starting-battery.html From that link... LFP as a starting battery – two concerns Question: I want to use the LFP battery (4x 3.2V cells) for starting of my car. What SBM (simple battery management board) should I use to protect the battery? You cannot use a SBM to protect the starting battery. For starting the car, the current will be very high, hundreds or even nearly 1000 Amps, it is not possible to disconnect such high currents. WARNING: Additionally it is not possible to disconnect the battery from vehicle circuits. The car electronics may burn or become faulty of the battery is suddenly removed from the circuit, as a result of disconnection, during the operation (when the engine is running). To install LFP battery, the battery must be hard wired to the car, the same way as the lead acid battery is. This brings some risks and problems: 1) No disconnection, no fuse. Note that the car battery is wired without any fuse or disconnection ! ! ! This is a huge risk that exists in all cars. It is crazy, but this is the reality. Yes, this is the most crazy thing about all cars you see in the streets — no high power fusing or disconnection of the 12V battery. This is also one of the main reasons for the many car fires – the fire starts from short circuit on the battery that cannot be disconnected from the car…… so the car will burn completely. There is less of a issue with the Lead Acid battery, as the Lead Acid battery can give the power for a short time, and it will stat loosing the peak power rating, after longer time of high current discharge. However for LFP battery, in case of short circuit, the battery will release all power suddenly, constantly and continuously. The LFP battery has much more power that the lead acid battery. ADVICE: Our definite suggestion is to install a high-power rating fuse for the LFP battery. The rating of the fuse should be 300Amp or even more depending on the starting currents for your application. 2) Deep discharge. If you left your car for long time without care, the on-board electronics (e.g. alarm, security systems, car radio, etc….) will drain the battery to completely empty – the deep discharge. In some cars the battery will be depleted as quickly as in two weeks. This is a lesser issue for the Lead Acid battery, as most Lead Acid batteries can survive the deep discharge. They can be recharged and they will perform in a reasonable way again. However this is not possible with the LFP battery. If you deep discharge the LFP battery, it is damaged for ever and there is no way to restore it to function. ADVICE: Our suggestion is that the LFP battery should be fully disconnected from the car in case you park the car and the car will not be used for a longer period of time.
Itinerant1 12/04/19 01:07pm Tech Issues
RE: Renogy 100ah LifePo4 Lithium - Max Surge Current

Here is the specs for the Relion RB100 The discharge shows peak 200a. One thing I'll say about Relion battery site it is hard to find info without a lot of fishing. https://i.imgur.com/O9rGIoll.jpg Incase that is small here is a shot of the discharge specs. https://i.imgur.com/SoHxDxFl.jpg
Itinerant1 12/02/19 03:20pm Tech Issues
RE: Renogy 100ah LifePo4 Lithium - Max Surge Current

LFP batteries are good, maybe you're expecting more than what 1 100ah battery can perform. What exactly are you using over 100a on a 100ah battery?
Itinerant1 12/02/19 12:56pm Tech Issues
RE: Battery Monitors

"How can you tell if the AH counter is correct wrt to SOC?" My system is made up of 20 prismatic 100ah cells, 4s5p= 500ah 12v. I have EMS/ CPU (BMS) system a little more robust than a dropin battery. The Magnum has nothing to do with AH counting it's done through the EMS of the Elite GBS batteries. The EMS system has a minimum recorded resolution of +/- 0.5A so any current below that level is not accounted for. The system could be setup for a finer resolution, but the shunt value would have to be reduced which reduces the systems maximum current capability.  The system will reset the capacity to 100% whenever the pack voltage reaches 3.49 to 3.52 V/cell on average. No, you don't need to charge to 14.6v (maybe dropins so they can sync their capacity % depends on the bms). A charger that can be adjusted to your specific needs is best, not one size fits all. I have my Magnum inverter/ charger programmed Bulk 14.1v, Absorb 14.2v (10 minute minimum, can't be turned off), Float 13.6v. The Magnum PT100 is linked in the Me-Arc to follow the settings of the IC. "Li batts are just weird!" That they might be but after living off them for 43 months now using 99% of the time charging with solar, using them at low SOC with heavy draw items, not worring if they're fully charged or not, with 500 + full cycles on them now. A happy camper here.
Itinerant1 11/27/19 06:50pm Tech Issues
RE: Battery Monitors

How do Li batts work for charging efficiency anyway? Wets go crazy for heat loss going past 80% SOC on up. AGMs heat up too. If Li batts have better charging efficiency, then a straight AH counter when charging would be more accurate than with Wets. (The Trimetric has a built -in allowance for heat loss while charging, but it is not expected to fit all batts. You can adjust that if you do enough trial and error work on that for your own set of batts) Not sure what it means that Li has that slow rise in voltage. I doubt it means poor charging efficiency. ? Here is a follow up charging the lfp batteries with some #s. Using a eu2200i generator, using a Magnum inverter/ charger (max 125a charging) I set my AC input to 15a on the remote display. Totally overcast today no charging from solar. Started at noon at 53% SOC (prior readings 13.13v), didn't really plan to do any recording and didn't get a starting voltage. 12:00 53% 12:24 Bulk 59% 13.60v(reading from monitor) 105.8a(charging) 57f(cell temps) 13:39 Bulk 86% 13.76v 102.5a 62f 14:01 Bulk 94% 13.90v 100.4a 64f 14:03 Absorb 95% 14.09v 80.4a 66f 14:08 Float 99% 13.76v 0.1a 71f Generator turned off, reading after, cell temps drop. 14:20 Float 99% 13.60v -12.0a 64f In 2 hours 8 minutes went from 53% (265ah) to 99% (495ah), total 230ah. I would consider that pretty efficient. ;)
Itinerant1 11/27/19 04:00pm Tech Issues
RE: Furnace failure

Probably have debri of some sort in the sail switch. Pull the furnace and check/ clean it. Fairly easy diy job. Some youboob videos show how.
Itinerant1 11/20/19 07:16am Tech Issues
RE: Battery Monitors

How do Li batts work for charging efficiency anyway? Wets go crazy for heat loss going past 80% SOC on up. AGMs heat up too. LFP are near 100% efficient, take a 100ah out your putting a 100ah back. No long drawn out charging. As I mentioned in earlier post, I could almost put a stop watch on the amount of time needed to charge just by looking at the monitor and knowing my SOC.
Itinerant1 11/18/19 06:08am Tech Issues
RE: Battery Monitors

Not a clue about Li batt charging profiles. I ASSume they are like other batts where once their Vabs is reached and held there by the charger, that amps will have to taper as SOC rises. Perhaps one of our members here with Li batts and nothing better to do, can make us an ugly graph like this, only using Li batts. (Or not so ugly if he is a computer whiz) https://i.imgur.com/htnJ0JNl.jpg No fancy graphs. If I was worrying or even trying to get a full charge on my 500ah bank. Using your stated 50% SOC (250ah) and my limited charging ability from a eu2200i (I upgraded from previous eu2000i) it will accept bulk @100ah from my Magnum 3000w inverter/ charger till it reaches 14.1v 100% SOC in under 2.5 hours, then drop back to float @ 13.6v if left on charger. On solar my max is 75-80a charging and it will accept that if the sun keeps shinning right to full. Nice thing about lfp no need to fully charge unless you think it's needed.
Itinerant1 11/17/19 08:57am Tech Issues
RE: li battery pack of my dreams

pouch vs cylinder is just that... the shape. Pouch is just in the form of a rectangular box. Nissan uses the pouches in the LEAF. Pictures on the link. Which packs more power with the limitation of size and weight? https://batteryuniversity.com/learn/article/types_of_battery_cells Summary from the article.. •Cylindrical cell has high specific energy, good mechanical stability and lends itself to automated manufacturing. Cell design allows added safety features that are not possible with other formats (see BU-304b: Making Lithium-ion Safe); it cycles well, offers a long calendar life and is low cost, but it has less than ideal packaging density. The cylindrical cell is commonly used for portable applications. •Prismatic cell are encased in aluminum or steel for stability. Jelly-rolled or stacked, the cell is space-efficient but can be costlier to manufacture than the cylindrical cell. Modern prismatic cells are used in the electric powertrain and energy storage systems. •Pouch cell uses laminated architecture in a bag. It is light and cost-effective but exposure to humidity and high temperature can shorten life. Adding a light stack pressure prolongs longevity by preventing delamination. Swelling of 8–10 percent over 500 cycles must be considered with some cell designs. Large cells work best with light loading and moderate charge times. The pouch cell is growing in popularity and serves similar applications to the prismatic cell.
Itinerant1 10/03/19 03:18pm Tech Issues
RE: AGM Mystery Capacity Crash Below 75% SOC UPDATE

41 months using it everyday is still being a Guinea pig, uhmmm. But then these aren't "drop in" batteries.
Itinerant1 09/24/19 05:40pm Tech Issues
RE: AGM Mystery Capacity Crash Below 75% SOC UPDATE

Don't know if Li can "take it" , the way I like to do things. AGMs were supposed to take it. They can--except not many times it seems. Not only can lfp "take it" I do this every day through out the day whether it's sunny/ overcast/ raining. The SOC can/ has been as low as 28% and I still made a 12 cup pot coffee (80a) and used the microwave (150a) for 5 minutes. ;)
Itinerant1 09/24/19 05:09pm Tech Issues
RE: Norcold LI-op Error Code

It could be that the switch just failed "OR" you have an issue in your flue (burner tube area). Have you serviced (checked/ cleaned) the tube area? That temp switch is there for a reason.;)
Itinerant1 09/13/19 03:27am Tech Issues
RE: Low temperature LI battery

Itinerant1, Thanks for being a guinea pig for the rest of us. If I feel the need to see what a large lfp battery looks like I'll look at my 500ah 20 prismatic cells that I live off of everyday for the past 41 months in my rv. I think the guinea pigs for prismatic cells came before me, it has been an awesome way to to enjoy solar/ batteries without the need to have the generator helping with charging everyday or needing to run the high draw items. Now I think there are guinea pigs out there with drop ins, who knows what's in the magic box. ;)
Itinerant1 09/03/19 05:11pm Tech Issues
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