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 > Your search for posts made by 'pianotuna' found 1347 matches.

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RE: Anyone using Lithium batteries? Comments?

Hi Phil, I think they are similar to AGM in design. The company is shortly going to do Li Titinate. No idea of prices. This chemistry brings new meaning to "fast charging". I.E. 6 minutes from dead to fully charged. I expect they are $$$$$
pianotuna 09/30/20 01:39am Class C Motorhomes
RE: Anyone using Lithium batteries? Comments?

Phil, The charge rate hardly is an issue. Yes a single Li will recharge faster. But very few of us have only 100 amp-hours. How many inverter/chargers can do more than 127 amps of charging? I don't know of any at all. My plans are for 400 to 600 amp-hours of SiO2. 400 may draw 100 amps of charging, and 600 would be 150 amps. So a 400 amp-hour li bank would only charge about 20% faster than SiO2.
pianotuna 09/30/20 12:28am Class C Motorhomes
RE: Connecting Portable Solar Panels

Michael, One other thought. Some diesels do NOT like to be idled. I do not know this from experience. I think you have to use "high idle". This is a "skating on thin ice" comment as it is outside my area of certain knowledge. Consider putting the description of your system in your signature--that makes it easy for others to refer to it when making comments.
pianotuna 09/29/20 05:15pm Tech Issues
RE: Connecting Portable Solar Panels

Michael, 800 watts would more or less eliminate generator use. Except for running the roof air conditioner. For that "condition" I use the trip planner at https://freecampsites.net/ and set the filter to electricity. Depending where you are it is possible to get power for free, or at extremely low cost. Your system is great because you have adequate storage, and excellent equipment (Victron? iirc). Another reason is that you took advice from many of the excellent folks on RVnet. Do wire the jars in a balanced manner. 400 is on the border line of not being quite enough. In a lead acid system it would not be enough, because of the need to equalize and fully recharge every cycle--but LI do not care about being fully recharged. It may be wise to fully recharge every 30 days or so--so that the internal cell balancing can do its job.
pianotuna 09/29/20 04:54pm Tech Issues
RE: camco wave 3 heater QUESTION

I won't use an unvented combustion heater. If you insist on having one, definitely ventilate and do not use when sleeping. There are many vented combustion heaters that use no electricity and are safe to use.
pianotuna 09/29/20 04:18pm Class C Motorhomes
RE: Camping and Traveling in the west in Winter

There is a wonderful thread on winter camping in the full time forum. In your situation it is a "must read". I've boondocked at -37 c (-34 f).
pianotuna 09/29/20 04:12pm General RVing Issues
RE: SpaceX/Starlink at work for the public good...

timmac, Thanks for your post about Starlink.
pianotuna 09/29/20 04:08pm Technology Corner
RE: Solar suitcase problem

most solar controllers do not "like" input from solar without first connecting to the battery bank. give the controller a "rest". Then short out the input, follow that by shorting out the output. Next connect the controller to the battery bank. Then connect to the solar panels. I hope the controller was not fried.
pianotuna 09/29/20 04:02pm Tech Issues
RE: Dry Camping - Heat with Propane, or electrically w/Inverter?

2oldman, Mine is not loud either. For those that want to use no power there are many vented combustion heaters. They may cost more--but would you drive on tires that have aged out?
pianotuna 09/29/20 03:50pm Tech Issues
RE: Connecting Portable Solar Panels

you will soon tire of deploying portable panels. That may be, but if it's the only way to charge the batteries, best to be able to tap into the sun I dislike generators, but relying 100% on solar may not be wise. If you are in a class C or class A with a v-10, it can safely be idled to recharge the batteries. Equip it with a dc to DC voltage boost device, and limit current to 1/4 of maximum alternator output. If not equipped with a V-10, then a small generator may be a good back up source. I do get six amps of charging at solar noon in leafy shade. I do get three amps of charging at solar noon in the rain. My solar farm is tiny at 256 watts, in comparison to your rather magnificent system, but now that I'm back to part time, it will be more than adequate when I upgrade to 600 amp-hours of SiO2 jars. My OEM system had ~437 amp-hours usable. (875 Amp-hours, total). I had no generator at all for 5 years. I never had to idle the v-10 in those 5 years. I ran out of fresh water before I ran out of power--and I cooked 100% electrically. You seem to have deep pockets--so why not max out the solar panels on the roof--they are the cheapest part of the system, in terms of cost per watt. My cost per watt was $5.50 in 2005, for the panels. Then, if you find you need them--buy some portable panels.
pianotuna 09/29/20 01:16pm Tech Issues
RE: Anyone using Lithium batteries? Comments?

The SIO2's dont look much better stat wise then a agm and way more expensive. Then find me a battery that can be charged at -40 and can also survive being discharged totally 620 times before it degrades to 80% of OEM capacity? Cycle life cost is cheaper than AGM.
pianotuna 09/29/20 12:58pm Class C Motorhomes
RE: Dry Camping - Heat with Propane, or electrically w/Inverter?

I agree in theory, but I also think it depends on the cubic feet volume of the trailer. Ours is a 44' fifth wheel with three slides and high ceilings. Our buddy heater won't burn through all that O2 in one night. I am not concerned about O2 depletion. I'm concerned about CO production and other combustion products. All blue flame heaters do produce CO. Low level exposure is not good. Every year some folks die in my Province from CO. It is not even news anymore.
pianotuna 09/29/20 12:48pm Tech Issues
RE: Anyone using Lithium batteries? Comments?

I'd recommend looking at SiO2 jars instead. They can be discharged to stone bone dead 620 times without dying. They are about 1/2 the price of LI. They can be used and charged at -40. They can be draw on at a rate of 9C. They do not need to be recharged to 100%. The only negative is weight. The "best buy" is currently the 100 amp-hour battery. For USA pricing go here: https://azimuthsolarproducts.com/product-category/batteries/sio2/
pianotuna 09/29/20 10:22am Class C Motorhomes
RE: Get me out of here! PLEASE

The blue ridge is a low speed route with wonderful scenery.
pianotuna 09/29/20 10:11am Roads and Routes
RE: Connecting Portable Solar Panels

you will soon tire of deploying portable panels.
pianotuna 09/29/20 10:07am Tech Issues
RE: Question on battery charging

Hi, Marine cycle batteries are poor at deep cycle use. I suggest upgrading to an SiO2 chemistry. The other battery is most likely compromised.
pianotuna 09/27/20 10:11pm Tech Issues
RE: Why Didn't I Think of This Before?

clickable link
pianotuna 09/27/20 10:05pm Do It Yourself Modifications and Upgrades (DIY)
RE: House batteries

Looking under the unit, Forest River 23c on a 450 chassis there is lots of room on the frame rails to add some battery boxes. Charge up at home before you store. Adding batteries is only part of the solution. This series of plain english articles may help: https://freecampsites.net/adding-solar/
pianotuna 09/26/20 11:52am Class C Motorhomes
RE: House batteries

Yes, it is normal. The batteries need to be fully recharged. The sane way to do that is with shore power. 3 hours of driving won't be enough to fully recharge the battery bank. Look into adding a modest solar system to recharge the battery bank in between trips.
pianotuna 09/26/20 08:20am Class C Motorhomes
RE: 2016 ITASCA TRIBUTE 31C Solar Upgrade

Consider Victron for the controller (Outback is good too) I'll be going to SiO2 jars next summer as they can be run stone bone dead with no damage, unlike most other batteries.
pianotuna 09/25/20 05:03pm Class A Motorhomes
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