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 > Your search for posts made by 'phemens' found 29 matches.

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  Subject Author Date Posted Forum
RE: Question on changing leaf springs on 5'er

No worries on the shackles, I replaced them with heavy duty Moryde ones with the wet bolts 2 seasons ago. I added an extra leaf to the springs when ordering and will replace all the hardware on the springs.
phemens 10/20/21 07:34am Tech Issues
RE: Question on changing leaf springs on 5'er

Good catch Don, I will!
phemens 10/19/21 07:01pm Tech Issues
RE: Question on changing leaf springs on 5'er

Both on one axle. You will need to lower and raise it to change out the spring, then align it to the centering bolt. While you are at it its a good time to replace shackles, bolts amd bushings. Shackles were all done 2 seasons ago (changed to the lubed kind) I was under the impression I could lower 1 side of the axle at a time instead of both sides?
phemens 10/19/21 03:42pm Tech Issues
Question on changing leaf springs on 5'er

Hi, I will be changing out the flat leaf springs on my 2012 5th wheel on all 4 wheels. Was wondering if there is any advantage to doing it by axle (i.e. both wheels on one axle, then both on other) vs. just doing one side at a time (both wheels on one side, then the other). 2nd way would reduce some of the setup time I guess. Thanks in advance!
phemens 10/19/21 02:30pm Tech Issues
RE: Skool me on cell phone boosters and install tips, please

We have a campsite way way up north where we work from in the summer. Installed a 40' antenna (extending pole with guy wires) and a highly directional antenna, coupled with a SureCall booster and the indoor antenna. Omnidirectional and Yagi didn't work well for us, this antenna (Link) has to be pointed very precisely, but delivers up to 15 db gain (in addition to the booster), which is exceptional. We started with 1 bar signal and now get full bars and roughly 20 Mbps internet speed, which is fine for remote work.
phemens 08/29/21 02:20pm Technology Corner
RE: LiFePO4 - SOK or Renogy.

Hi Almot, I’m wondering if you made a decision and how it worked out. I’ve been looking at the Renogy Smart Batteries but am discouraged by the terrible reviews of Renogy Canada. People on BBB and Trust Pilot say to avoid this company because the service is as bad as bad can be. The topic has drifted far, far away - as it often happens on this Tech Forum, which makes it more interesting. But since you brought back my mundane initial quest for a gold nugget in the pile of Chinese, er... stuff ;) - yes, I made a decision and bought Lynac Lithium as suggested by some member: Thanks. The Lynac 100AHs are out of stock right now. Preorders only. I subscribed to your testing thread to learn from your experience. The fact that he answered your question immediately is a good sign. My wife recently got a CPAP. We were going to power it off grid with a so-called solar generator but figure the money might be better spent upgrading the house battery in our rig. I was the one to recommend them. I was their first RV customer 3 years ago and I've kept in touch with the owner on various questions during that time (plus a couple of additional batteries), he's always been very responsive and transparent. So far after 4 seasons the batteries are holding up well, no discernable loss of capacity or issues. If I were to do it all over again, I would probably build my own today, as there is much better reliable reference information available on the internet, and a plethora of reliable sources for the cells. Also much more comfortable with the technology and would know what to build for. All that being said, as a first time buyer I would repeat my purchase with them. With the battery bank we have and the solar, we don't worry at all about energy conservation - the inverter is always on, residential fridge runs 24/7 and we freely use TVs, CPAP, etc. without concern. That was exactly the use case I was aiming to meet and for us LiFePo4 was the right solution.
phemens 05/05/21 11:09am Tech Issues
RE: Basics of Lithium conversion... I'm lost!

phemens, Nice post on aluminum heat sink dissipation. I think the trust of the recent posts is how to keep the batteries warm in cold weather. (which is what keeps me from using them) Yes, but I think that's largely overstated as an issue for 95% of people that are the potential target market. Your use case evidently is extreme, which means that chemistry isn't for you! In my case we camp on a remote piece of property without any services and need the batteries & solar to function continuously to keep the residential fridge going 24/7. We're also not there for several days at a time, so I need something that is relatively fool proof. There are a few weeks in the spring and fall where the temperature drops enough that if I didn't warm the batteries, the Victron sensor would prevent the MPPTs from charging (I set the cutoff for 5C, which is conservative). The warming mat and insulation see me through but I can't speculate on whether it would be sufficient for much colder temparatures. Were that the case I would probably opt to add a beefier heater and fan.
phemens 04/27/21 06:06pm Tech Issues
RE: Basics of Lithium conversion... I'm lost!

do you use a tiny computer fan or anything to blow the heat around or are you just using the heat radiating off the alumium base? Steve If using a thermostat controller like mine it must be placed to measure the heat in the batteries, not the surrounding air which would heat up quickly and perhaps shut down the heater before the batteries reach a good temp. If you look at my diagram and read the text, I placed the temp sensor between the 2 batteries which are tight together and below the top. I use a Victron shunt connected directly to one of the battery terminals. No fan, aluminum dissapates heat for all of the batteries.
phemens 04/27/21 01:00pm Tech Issues
RE: Basics of Lithium conversion... I'm lost!

https://diysolarforum.com/threads/lifepo4-battery-warmer-install.14485/ This thread shows how to install warming pads and a thermostat controller for LiFePo4 batteries. Mine is shown on page 5 for my Class B. Works great. thats interesting, a lot of them seam to wrap the batteries in insulation tight, then have the pad stuck to the side. wouldnt it make more sence to have that insulation an inch or two away from the battery so you could get a bit of air movment and use less pads to heat more batteries? just thinking here so if it has been done and didnt work I would be curious as to why. seams to me if you have the space to put say 2 or 3" of good insulation with sy a 2" air gap between the batteries and the inside of the insulated box and say a tiny ultra low draw fan to cirulate the air, you could probably heat several batteries with one heating pad and cut the amp draw for that purpose. of course this would depend on the space you have also I guess. Steve That's exactly what I do. I have a single waste tank heater placed under 6 LiFePo batteries (with a thin sheet of aluminum to spread the base), with 4 inches of foam insulation cased around the battery box. There's about 3 inches of gap between the batteries and the foam. I checked this weekend and the temp at the battery terminal according to the Victron shunt was 8C, ambient outside temp was -3C. Works well for my purposes, we don't camp in extreme cold weather but do in the fringe seasons.
phemens 04/27/21 06:17am Tech Issues
RE: RV Roof Tape

Can't speak for Extreme White RV Roof tape, but I've used Eternabond on all my RVs and been very happy. Good preparation and planning is key, as you mentioned making sure all surfaces are clean and having the right tools (one of those rollers for laying down lineoleum is very useful for getting enough pressure). Start slowly and make sure you correct your line as you go, once the tape is down it is down, and I've had plenty of creases. It doesn't need to look pretty (but nice if it does), as long as it covers all the seams. Don't forget to do any slides too.
phemens 03/27/21 05:37pm General RVing Issues
RE: Lithium batteries and new solar charger

Your two 100 LFP will actually have 80 usable each so 160 not 200 to compare with the 260. (you don't normally go below about 20% DOD) Your controller is a 12/24 but being PWM that only means 24 if the batteries are also 24. To go 24 panel and 12 battery, you must have an MPPT with its buck converter that PWMs don't have. Depends on whether the batteries are 'true' AH or not. The last LiFePo4 battery I bought was rated as usable 100AH, so in reality 120AH.
phemens 03/22/21 07:34am Tech Issues
RE: LiFePO4 - SOK or Renogy.

He helped me figure out all the correct settings for my MPPTs and charge controller. Lynac Lithium As an aside, the storage of LiFePo4 batteries at 50% is meant for long-term storage (i.e. over the winter), not a problem at all if it's a matter of weeks. I'm curious what he suggested on controller settings. I see manufacturers labeling their controllers "Lithium compatible" while they are just regular 3-stage controllers with Bulk, Absorb and Float, and Absorb is often fixed 60-90 minutes. My impression has been that Lithium cells don't need Absorb for any substantial period of time. Odd controllers like EcoWorthy that switch to Float in a few seconds after hitting Absorb, is what it needs. I think Float won't hurt much, especially if you set it below BMS cut-off, so it would just start Bulk when voltage drops below Absorb. Yes, 50% SOC is for long term storage. When you're going to use it in a matter of days or in 2 weeks, you can charge it fully. It's a sliding scale, the more paranoid you are about it the better the chances are that it would live up to the promised 3000-4000 cycles. In a nutshell, I'm using a 3000w all in one Samlex unit, with Victron MPPTs for the solar. Here are the settings he gave me for the Samlex (settings essentially same for the Victron, but with temp cutoffs): Battery type= 1 Lithium Charging profile 3=2Stage Type1 Absorb Exit Amps=0A Absorb Time=1 min Floating exit=12.00V Equalize-4stages 0=No LV cut off time = 1200 sec LV detect time=10 sec Batt low voltage=12.00V Low volt alarm=11.50 V Reset Voltage=12.60 V Batt over volt=14.40 V Compensate= 4 mV/C/C Floating voltage=13.00V Equalize voltage=14.00V Absorp voltage=14.20V
phemens 03/01/21 07:58am Tech Issues
RE: LiFePO4 - SOK or Renogy.

If you want to buy in Canada, I bought from this company 2 years ago (total of 6 100ah batteries), and dealt with the guy who runs the outfit, very accomodating and full of info (he's an electrical engineer). He helped me figure out all the correct settings for my MPPTs and charge controller. Lynac Lithium As an aside, the storage of LiFePo4 batteries at 50% is meant for long-term storage (i.e. over the winter), not a problem at all if it's a matter of weeks.
phemens 02/27/21 11:20am Tech Issues
RE: RV Lithium Lite & Lithium Super Upgrade Systems - Mike Mas

phemens, The reading I've done (which may be incorrect) suggest low slow charging may be possible at -20 c (-4 f) Tonight it will be -33c here. Yes, I've heard that as well. My use case is really on the borderline of the threshold for regular charging (getting down to below 0c occasionally, with risk of battery core temp falling into that 'danger zone'), and that's for a couple of weeks at the end of the season (maybe longer is we start extending). Since we're not there to make adjustments during the week, the safest option for me is the waste tank heater running all the time. At 6a/hr, I only really get a drawdown after the sun doesn't send enough juice to the solar panels, so maybe 14 hrs which is 84 ah to recover, which is more than acceptable given my battery reserves. While we're away apart from the heater, there's the residential fridge and usual parasitic draws, so the system keeps up without breaking a sweat.
phemens 02/06/21 09:43am Class A Motorhomes
RE: RV Lithium Lite & Lithium Super Upgrade Systems - Mike Mas

Retaining capacity in LiFePo4 batteries isn't the issue, it's restoring the charge, that's where you'd need some kind of heating setup to maintain core temp. You can safely discharge at high efficiency in cold weather (I believe it's efficiency is substantially higher than wet cell).
phemens 02/05/21 07:26am Class A Motorhomes
RE: Lithium Titanate

Easy answer for me. Expensive batteries give me peace of mind. With Covid, our trailer is parked for 3 seasons on a piece of property we bought (to camp on because campsites were closed last summer and for eventual retirement). With plenty of solar and a big, light battery bank, I can keep a residential fridge running full time with no worries and plenty of power for days if there's no sun - something I can't do with a generator since we're not there full-time. When we get back on the road (who knows when?) we're fully self sufficient and well within weigh limits (something I can't say about my previous battery bank of 3 huge Rolls 210a 12 volters...).
phemens 02/01/21 06:23am Tech Issues
RE: SiO2 Batteries

What is your intended use? Boondocking. I have 220W of solar with a MPPT charger. No AC appliances. I have two 100AH deep-cycle AGM batteries now. I am attracted by the LiFePo4 batteries for their reducted weight and current capability but not their need for a special charger. The SiO2 eeidently can use a standard charger. If your charger is programmable, the settings for LiFePo4 are not complicated. I'm a little puzzled though - if you're going to invest significant $ in batteries, a small investment in a new charger (if needed) is a problem?
phemens 01/27/21 06:31am Truck Campers
RE: Built-in Genset on 2021 F-150

From what I can tell, it's only available as option on the F150's. Any news or info on availability for the Super Duty range?
phemens 01/11/21 06:20am Tow Vehicles
RE: All in one solar / shore converter charger

I have the Samlex 3012, it does everything you're asking it to do, and it's built like a tank, solid components that IMO are less likely to fail than individual devices (charger, inverter, etc).
phemens 01/09/21 10:01am Tech Issues
RE: Heating pads

The one I use for my battery bank is a waste tank heating pad and it draws 6 amp at 12v. It is intended I believe for 49 gallon tanks.
phemens 01/07/21 06:30am Do It Yourself Modifications and Upgrades (DIY)
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