Good Sam Club Open Roads Forum: Search
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  



Open Roads Forum  >  Search the Forums

 > Your search for posts made by 'otrfun' found 172 matches.

Sort by:    Search within results:
Page of 9  
Next
  Subject Author Date Posted Forum
RE: Converter voltage drop

LiFePo4 batteries need >14 volts at the end of their charge cycle to assure proper cell balance. Whether 14.2, 14.4, or 14.6 really doesn't matter much and their BMS will actually shut off charging current when the voltage exceeds the manufacture's setting (14.7v on my Battleborn's). If one is boondocking and cycling the batteries regularly a converter that delivers a fixed voltage from 14.4-14.6 v will charge quickly, depending on battery bank capacity and output rating of converter. Once charged the generator is usually shut down and the battery starts another cycle. No harm done to batteries with the "fixed voltage" as the battery isn't held at this high voltage for an extended period (measured in weeks and months, not hours or days). When tied to shore power the recommendation is to just charge batteries to 100% and disconnect batteries, running only on Converter output which was sized by the manufacturer to run all 12v items without the need for a battery. If connected to shore power for months and months, Battleborn recommends to just switch batteries back online a recharge every 6 months. If one has a converter that won't deliver >14 volts long enough to top balance the cells of a LiFePo4 battery, one economical solution is to purchase a battery maintainer that has "Lithium" capability. A NOCO Genius 2 amp smart charger is only $49 on Amazon and can be directly connected to the battery when running the generator or connected to shore power for topping off and cell balancing. Don't even need to shut off the converter as once the battery voltage reaches the max of the converter, the converter will essentially stop delivering current to the battery. The "maintainer will take over until it's max voltage is reached when cells are balanced and battery is fully charged.All the monitoring, switching on and off of the converter (and generator) you've described, is necessary if you use single-stage converter/charger---especially if it's a 14.6v unit. If you purchase/use a multi-stage converter/charger (13.2/13.6/14.4 or 13.6/14.6) none of the monitoring or switching you've described would be necessary.
otrfun 06/24/22 10:56am Tech Issues
RE: Converter voltage drop

. . . I have 6g on an approx. 10' one way run between battery and converter. New converter will be a 45A model. A 1.5% drop will bring 14.6v down to 14.4v. Based on my limited knowledge, I'm thinking I'll have at least a 1.5% drop . . .Based on the voltage drop calculator I'm using, a 10 ft (one-way) run of 6 awg at 45a will result in a .36v, 2.47% drop at 14.6v. This is best case and assumes all connections and terminals are properly tightened and crimped. Everyone has their own personal preference in terms of an acceptable voltage drop. We typically strive for less than 2%. YMMV.
otrfun 06/23/22 03:27pm Tech Issues
RE: Harbor Freight Predator 3500

Has anyone been able to obtain parts for the HF Predator 3500 inverter generator (or one of its related cousins)? About 3-4 years ago was surprised to learn HF didn't sell any parts for it. All they offered was the optional one-time replacement warranty. All or nothing. From all accounts this appears to be an excellent generator for the money. However, it wouldn't be fun to have a $800 boat anchor all because you couldn't obtain a $5 part.I would rather have a $800 "boat anchor" than having a $1600 plus Honda that would cost well over $800 to repair.. Not sure you will find a Honda brand part for $5, perhaps you might get a Honda branded spark plug but I suspect even that would cost $20.. But the reality is even that cheaper $800 gen can often be "repaired" using generic Honda knock off parts which fit Hondas also.. Heck you can buy new Honda clone carbs for $15 and they do work as good as the Honda branded carb..Point taken. For me, best value is determined by individual wants, needs, and ultimately luck (or lack of).
otrfun 06/22/22 10:03am Tech Issues
RE: Harbor Freight Predator 3500

parts list for Predator 3500 predator 3500 parts listThanks for the link! Good to know they at least have a parts list. That's encouraging.
otrfun 06/22/22 09:44am Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

Deleted. Just TMI for some--lol! Carry on :)
otrfun 06/21/22 10:18am Tech Issues
RE: RecPro RV A/C

. . . This gives me some confidence that my 2200 will be good at a higher elevation and higher ambient temperaturesSeriously doubt you'll have any issues with your 2200 at elevation. We've powered our 10k Dometic Penguin II a/c (with Micro Air installed) using our Honda EU2200i at 7k elevation a few times. Ambient was somewhere in the mid/high 80's. A/c typically pulls about 8-11a (11a with very high ambient temps). Zero issues.
otrfun 06/20/22 04:07pm Truck Campers
RE: Fifth Wheel Hitch - tried searcing

When we had our 5th wheel, we were going to purchase a nice B&W hitch. When we discovered how heavy and awkward they were to move we compromised. Not fond of the Anderson for various reasons, so we purchased a hitch similar to this. It's a two piece hitch that disassembles easily by just pulling a couple pins. The top and bottom assemblies each weigh about 40-45 lbs. each. Very manageable. To clear the mounting rails with your truck camper, you may consider using 1 or 2 sheets of plywood with portions cut-out to clear an opening for the mounting rails.
otrfun 06/20/22 03:37pm Truck Campers
RE: First big trip - Newbie questions

How important is it (for you) to flush the toilet or use the sink while you're on the road? If important, place just enough water in the FW tank to flush the toilet (or use the sink) a time or two. If not, you may want to leave it empty to save weight (if you're concerned about weight). As for the black-tank deodorant, you might consider following any directions noted on the deodorant container. We always place enough water in the black tank to "cover" any eventualities---regardless whether we use deodorant or not. Enjoy your first, big trip with your Palomino!
otrfun 06/20/22 03:15pm Truck Campers
RE: Harbor Freight Predator 3500

Has anyone been able to obtain parts for the HF Predator 3500 inverter generator (or one of its related cousins)? About 3-4 years ago was surprised to learn HF didn't sell any parts for it. All they offered was the optional one-time replacement warranty. All or nothing. From all accounts this appears to be an excellent generator for the money. However, it wouldn't be fun to have a $800 boat anchor all because you couldn't obtain a $5 part.
otrfun 06/20/22 02:48pm Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

Lastly, lifepo4 cell/battery manufacturers ship their units with a 30-50% SOC for a reason. It's the ideal SOC for a lifepo4---for the short and long-term. Yes, 30%-50% may be an ideal SOC for long term storage but since April 1 2016 international regulations regarding air shipments of Lithium batteries restricts the SOC to 30% or less. FWIW, my solution to the storage issue is to just go camping regularly and since I primarily boondock, batteries are constantly being cycled. I just follow Battleborn's recommendation when I return from a trip. "Charge to 100%, disconnect, and just charge again after 6 months of inactivity" (which has yet to occur). With 200 ah of storage and a daily average consumption ~50 ah, I will complete a full charge cycle every 4 days. If I were to "Full Time Boondock that would amount to 91.25 full cycles per year. Battleborn advertises 3,000 to 5,000 cycles from their batteries. This amounts to 32 to 55 YEARS of battery life based on cycles alone. Most LiFePo4 batteries in RV's will most likely outlive their owners and possibly those who inherit the RV and batteries. Reality Check, LiFePo4 batteries are also subject to internal chemical degradation like Lead/Acid chemistry batteries. Even with the most careful charging practices they will most likely age out somewhere after 10-12 years which is why the best warranties max out in that range.Some of the discussion here is a somewhat, in-the-weeds debate about ways to maximize cycle life. Some of the SOC and charge voltage monitoring required to implement some of the charge profiles (for only a nominal increase in cycle life) is probably overkill for the average user. Only someone who places a higher priority on cycle life vs. usability would find it worth their time. I only mentioned the 30-50 cycle as an extreme example of how to maximize lifepo4 cycle life--just to make a point. Rather doubt it's worth anybody's time to actually implement it because it would reduce the ah capacity of the battery to a ridiculously low level. As for your comment about air shipment of lifepo4's at 30% or less SOC, I'm not sure how this fits into the current discussion. Maybe you can clarify. Bottom line, as I mentioned in an earlier post (and as you also somewhat alluded to), the average user can get by without having to resort to any special charge profile and still obtain many, many years of use from their lifepo4.
otrfun 06/19/22 11:58am Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

Note that I am not advocating for leaving the LFP connected while on shore power with an active converter. I am commenting on how the converter makers see the problem, where they assume the converter will be on during shore power time ( nearly all the time for most RVers AFAIK), and they have to be sure a connected LFP won't be ruined during that time. (They do not imagine the RVer disconnecting the LFP) So their various attempts to make the converter "compatible". Guys on Tech Issues are not like most RVers? which means they are more likely to be willing to do a few things instead of being totally automatic and hands free? Just saying that so far IMO it seems the converter makers have not solved their problem of making their converters totally "compatible" with LFP (something of a moving goal post itself for what is needed?) I did say their converters are not totally compatible with FLA and AGM either, but the penalty in dollars for the RVer who treats them as such is low compared with the penalty cost of doing that with LFPs. The OP is trying to get as close as he can to hands free by maybe swapping out his converter, but it seems like he is as good as it gets now with his OEM converter, unless he wants to do more manually himself.Excellent questions! My take: The vast majority of converter/charger sales are to regular folks who generally have a set-it/forget-it mentality. There are always going to be folks who will leave their converter on 24/7/365 while connected to a lifepo4---for better or worse. Back in the day, it took manufacturers some time before they offered 3-stage units for lead-cell batteries to address long-term float needs. I believe manufacturers are going through the same learning process with lifepo4. Many of the lifepo4 converter/chargers currently on the market are single-stage 14.6v units---a less than ideal charge profile. Manufacturers are now transitioning to 2-stage units to address the potential overcharging risk posed by single-stage units. Lastly, lifepo4 cell/battery manufacturers ship their units with a 30-50% SOC for a reason. It's the ideal SOC for a lifepo4---for the short and long-term. I think it's just a matter of time before manufacturers eventually transition to 3-stage units to address this unique lifepo4 storage/float requirement. Until then, those set-it & forget-it folks (who may be striving for maximum lifepo4 cycle life) will just have to remember to turn-off their 1 and 2-stage lifepo4 converter/chargers when they're not camping.
otrfun 06/17/22 09:41am Tech Issues
RE: Insurance and RAM 5500

My understanding is that a truck camper is covered by your homeowner's policy when it is off the truck and sitting at your house, and covered by your vehicle's policy when it is on the truck. But if you take it off the truck anywhere else like a campground (if, for instance, you need to get some work done on your truck and they need to keep it overnight.) it's not covered by either policy.I've heard insurance agents say this to me and a couple of folks I know who have applied for insurance for their truck camper. I think they're referring to coverage for a "topper" or camper shell, typically worth no more than a couple thousand dollars. In many cases these are considered a truck accessory or personal item (homeowner's policy) and do qualify for some limited coverage. For those with truck campers worth $25k-$50k (especially if they're registered and titled) rather doubt a typical truck or homeowner's insurance policy is going to provide coverage---especially in the event of a total loss. Unless you have the truck camper's make, model and VIN listed somewhere on your truck or homeowner's policy, IMO coverage is very questionable.
otrfun 06/16/22 03:37pm Truck Campers
RE: New 2 stage PD lithium Converter charger yet?

Another factor (though widely overlooked…) that impacts longevity is determined during the manufacturing process via final testing, and suggest the cost difference between say a BattleBorn or an Aims (grade ‘A’ cells), versus the bargain brands . . . Agree, cell quality and testing is very important. However, there's another significant issue to consider when comparing a 12v 100ah Battleborn battery to other 12v 100ah lifepo4 batteries on the market. BB's 12v 100ah lifepo4 battery uses 100+ cylindrical lifepo4 cells in a parallel/series configuration. If a few cells go bad, weak, or unbalanced, there's minimal effect on the battery's total output because each cell is connected in parallel with 25-30 other cells. To my knowledge no other 12v 100ah lifepo4 battery manufacturer configures their battery in this manner. The typical 12v lifepo4 battery (found on Amazon and elsewhere) uses 4 prismatic cells, all wired in series. One bad, weak, or unbalanced prismatic cell in a series configuration has an equal and dramatic impact on the entire battery's output. A lot more eggs in one basket so-to-speak. Battleborn could have built a much lighter, smaller, and less expensive 12v 100ah battery using prismatic cells, but they chose not to in order to achieve maximum redundancy, reliability, and longevity.
otrfun 06/16/22 11:16am Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

Good question. Depends on what you want from your lifepo4. Maximum usability? Maximum cycle life? Or, something in the middle? 14.6v nets you maximum ah's and minimal charge times at the expense of cycle life. You can charge a 12v lifepo4 with any voltage between say, ~13.15v and 14.6v with varying degrees of usability and cycle life. 14.6v nets you maximum ah's and minimal charge times at the expense of cycle life. ~13.15v nets you maximum cycle life with reduced ah availability and increased charge times. There is no one charge profile that provides both max usability and max cycle life. It's either one or the other, or a little of both. Pick your poison.Im not sure the way this part is worded is the best. and it could be leading to a lot of the confusion. I think it would be better to say "advertised cycle life" instead of "at the expence of cycle life" some one like BF13 or PT might interpret that as by charging to 14.6V we are only going to get 1800 cycles now. the max figures are what the cycles are based off so 14.6 charge 100 to 0 discharge, but yes like you say if you don't need all of your battery bank operating between say 80 and 20% would normaly take a 3000 cycle battery up to the 5000 cycle range and using less than 50% so 30 to 80 could take you up to 7000 cycles. so there is a big trade off, but generaly to get more life you have to spend more on batteries to let you use that smaller amount of capacity. Im trying to figure out how to set up my peramiters on my solar charger to stop charging at 90% right now, but I have 10x my daily use capacity so using 90% as my celing should gain me a tone of life that I probably won't live long enough to see anyways hahaI stand by my comment: "14.6v nets you maximum ah's and minimal charge times at the expense of cycle life". I'm not claiming it's a large, or a small amount, I'm simply claiming that there is a drop in cycle life, which is a true and correct statement. I purposely worded it this way because the amount of cycle drop cannot be quantified unless you're comparing cycle life at 14.6v vs. cycle life at a specific, lower charge voltage, which I did not do. If BFL13 or PT (or anyone else) want to assume I meant a large, small, or specific drop in cycle life, that's their right to do so. However, I only claimed there was a drop---nothing more, nothing less. On the flipside, I very much agree with your comment, " . . . using 90% as my celing should gain me a tone of life that I probably won't live long enough to see anyways haha". Most of this debate about the best charge profile, voltage, converter, or charger for a lifepo4 is probably a moot point for the vast majority of lifepo4 users. Even the use of a single-stage 14.6v lithium converter/charger, which is probably the worst charging device you can use to charge a lifepo4, will probably still net the average lifepo4 owner 10 years of use before capacity drops below 80%.
otrfun 06/16/22 08:37am Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

. . . I am unclear what goes on with LFPs for that, where many say 13.6 is too high with LFP for "Float", but is it too high for while camping using 12v things? Perhaps there should be a new set of voltages for LFP for what to use while actively camping and what to use when the rig is not being used? . . . Good question. Depends on what you want from your lifepo4. Maximum usability? Maximum cycle life? Or, something in the middle? You can charge a 12v lifepo4 with any voltage between say, ~13.15v and 14.6v with varying degrees of usability and cycle life. 14.6v nets you maximum ah's and minimal charge times at the expense of cycle life. ~13.15v nets you maximum cycle life with reduced ah availability and increased charge times. There is no one charge profile that provides both max usability and max cycle life. It's either one or the other, or a little of both. Pick your poison.
otrfun 06/15/22 07:48pm Tech Issues
RE: New 2 stage PD lithium Converter charger yet?

Even 13.6 continuous is a bit high. I would stick with what you have. Also charging the lithium at the absolute max 14.6 volts is overrated and unnecessary. The 13.2 - 13.6 - 14.4 profile is better. Especially with minimal use due to solar.Agree. Unless your 3-stage (13.2v/13.6v/14.4v) lead-cell converter has a lead-cell/AGM equalization mode that goes above 14.6v, there is zero need to upgrade to a so-called "lithium" approved converter/charger. The so-called equalization mode on many of the Progressive Dynamic units simply reverts to 14.4v bulk mode for about 15 min. every 21 hours, if the battery remains fully charged. Absolutely safe for a 12v lifepo4 battery. If you leave a 3-stage (13.2v/13.6v/14.4v) lead-cell converter connected to a fully charged 12v lifepo4, it will eventually drop to 13.6v, then 13.2v. Lifepo4 batteries don't like sitting around at a high SOC (13.6v - 14.6v/99 - 100% SOC) for long periods of time, so dropping to 13.2v is good for a 12v lifepo4. 13.2v equates to roughly 70% SOC. The closer you can long-term float at 30-50% SOC the better. Long-term float at 30-50% SOC (13.0v - 13.15v) results in absolute maximum cycle life from a lifepo4. Most 2-stage lithium converter/chargers will continue to float at 13.6v (99-100% SOC) indefinitely. Although long-term float at 13.6v for long periods of time won't damage a 12v lifepo4 per se, it will reduce the cycle life of the battery a nominal amount (vs. 13.2v). IMO, the best all-around 3-stage lithium converter/charger would have a 14.6v bulk charge (maximum charge current, minimal charge time, slightly reduced cycle life), a 13.6v absorption, and a 13.1v long-term float (for maximum cycle life). For those who have a preference for absolute maximum cycle life, a user selectable switch to limit bulk charging to 13.6v, then a 13.1v long-term float, would be ideal.
otrfun 06/15/22 11:15am Tech Issues
RE: RecPro RV A/C

. . . In an effort to get an idea what the peak inrush current at startup may be, using the Min/Max and fast Peak settings on the Fluke 87iii, I recording the following Max peak readings during six starts: 23.36, 24.76, 30.84, 26.44, 27.40, & 28.28 amps. I realize that this may not be an accurate way to measure peak inrush, but it is best way I had available and may give an idea. I have used several Microair EasyStarts on my RV’s and installed several more for friends. The EasyStarts make a huge difference during compressor start up. . . . Totally agree. Used an Amprobe 320 to measure inrush current on our 10k BTU Dometic Penguin II a/c. Prior to installing the Micro Air Easy Start, I believe the inrush was in the low 50's. After installing the Micro Air, 15-16a. Very dramatic drop. It's so low that just about any high-frequency 2000 watt inverter could start this a/c compressor.
otrfun 06/13/22 07:18am Truck Campers
RE: RecPro RV A/C

mrggg, thanks for the info! The inrush and continuous current measurements for the RecPro are especially helpful. You mentioned the RecPro is "dramatically quieter". Glad to hear that. Is your unit ducted or non-ducted? Much difference in loudness when selecting different blower/fan speeds? Does the RecPro use one motor (and two squirrel cage fans) for the evaporator and condenser coils like Dometic?
otrfun 06/12/22 01:03pm Truck Campers
RE: TC and MPG

2016 Cummins SRW, 65 mph, flat, no wind. 11.5 mpg towing 12k, 13.5 ft high 5th wheel. 13 mpg hauling 4k truck camper (10.5 ft high on truck).
otrfun 06/12/22 12:35pm Truck Campers
RE: Replaced WFCO with PD

. . .
otrfun 06/05/22 10:53am Tech Issues
Sort by:    Search within results:
Page of 9  
Next


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.