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 > Your search for posts made by 'pianotuna' found 1357 matches.

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RE: Best bang for the buck Golf Cart battery

Gdetrailer, There are long life alternatives that are quite amazing. The ones I'm planning on purchasing next summer have a cycle life of 18 years. At that point they have 80% of OEM capacity left. That would make me 90.....so I guess they are a life time guaranty for me.
pianotuna 10/14/20 11:09am Tech Issues
RE: Up grading my Class C

far better to refurbish the "house".
pianotuna 10/13/20 04:40pm Class C Motorhomes
RE: AC Amp/Voltage monitor

My watt meter came with 2 coils. So no cancellation would happen.
pianotuna 10/12/20 09:33pm Do It Yourself Modifications and Upgrades (DIY)
RE: Best bang for the buck Golf Cart battery

Phemens, An SiO2 100 amp-hour would have been $600 Cnd and would offer essentially the same performance as Li. On float, lifespan is 18 years.
pianotuna 10/12/20 05:40pm Tech Issues
RE: Best bang for the buck Golf Cart battery

If you won't be in cold weather consider LI chemistries. If you will be in cold weather consider SiO2 chemistries. Both of the above are a lower "cost per cycle" than anything else.
pianotuna 10/12/20 12:23pm Tech Issues
RE: Winter in Vancouver Island

I wonder if boondocking is viable on Vancouver Island. Are there Provincial Parks open? Thanks to an Id ten T person in Saskatoon (he was asked to move along, and did so--after pulling his black tank valve) none of the Walmarts in Saskatchewan allow over night parking.
pianotuna 10/12/20 11:51am Snowbirds
RE: AC Amp/Voltage monitor

I use a hall effect watt meter to monitor my loads. To make life simpler I upgraded to a hybrid inverter/charger that does load support. So I can draw about 3000 "extra" watts (26 amps) from the battery bank. I can limit my draw on the shore power to pretty much what ever I wish. I normally run at a 2800 watt limit (or 24 amps).
pianotuna 10/12/20 11:43am Do It Yourself Modifications and Upgrades (DIY)
RE: Max amp draw

Here is a link to Mex's suggested resource. https://batteryuniversity.com/ It is a living entity.
pianotuna 10/11/20 11:45pm Tech Issues
RE: Max amp draw

Hi BFL13, There was a slider--so I did not copy the entire equation--sorry about that!
pianotuna 10/11/20 12:21am Tech Issues
RE: Max amp draw

PbO2+Pb+2H2SO4 -- ChargeDischarge -- 2PbSO4+2H2 BFL13, If I am reading that chemical equation correctly Hydrogen is produced on discharge. From; https://www.sciencedirect.com/topics/engineering/sealed-battery
pianotuna 10/10/20 06:57pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

I believe the original Tesla Power wall was 6400 watt-hours. Six SiO2 will get me pretty darn close to that.
pianotuna 10/09/20 06:27pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

Hi Mex, Don't be a piker. Jump right up to 48 volts @ 1650 amp-hours. * GRIN * They do make a 24 volt format. I do know of one person who has 1000 amp-hours of li--but at 12 volts. If I remember correctly, he has 1600 watts of solar as well, and pretty much boondocks 100% of the time. He make a business of doing solar installations.
pianotuna 10/09/20 06:23pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

Mex I'll have no issues with weight with 6 100 amp-hour batteries. I originally had 7 group 29 marine jars.
pianotuna 10/09/20 03:43pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

BFL13, I think mixing types of battery chemistries is a poor idea. One or the other may act as a vampire on the other, unless there are isolation switches--and consistent use of the switches.
pianotuna 10/09/20 09:40am Tech Issues
RE: SiO2 ? -UPDATE Tests.

Hi, I found a review from what I believe may be a reputable source. It has some history, too. https://www.sanidumps.com/product-testing-rv-batteries.php?fbclid=IwAR1tKO9CvFrTnAFoFinKtn0KoDN1d8nXJcvotDa-zLAOfoO4AGegh_pHu9c
pianotuna 10/09/20 01:52am Tech Issues
RE: SiO2 ? -UPDATE Tests.

mchero, Not that I am aware of.
pianotuna 10/08/20 10:53pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

BFL13, Thanks for winnowing out the charge information from the PDF.
pianotuna 10/08/20 10:39pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

time2roll, RV is set up already for two banks. Having just one bank would be a bit of a pain to wire in a balanced manner. It could, of course, be done. However it would not make much, if any, improvement. I would need to upgrade the disconnect switch for the inverter. I would have to dramatically increase wire size. I would have to add a "wiring tunnel" between two compartments. This would need to be water proofed. At 20 amps for six jars, it would exceed the charging capacity of the Magnum inverter/charger. I'm sure there are other changes I would need to consider. I will be float charging them between trips. The solar system is tiny by today's standards, but it was what I could afford at the time. The reason for the large bank is to allow me to run without a generator for long periods of time, and have the RV behave as if it were on shore power. Then between trips the solar can fill the batteries back up. I'll have about 7 kwh of storage, about the same as a Tesla Power Wall.
pianotuna 10/08/20 10:38pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

I'm hoping to have the funds to get six 100 amp-hour SiO2, configured in 2 banks of three, 1 xxx amp-hour for starter battery, and something that will fit the Yamaha generator. In addition, I think my brother may want a pair of 100 amp-hour for the sump pumps back up power at his cottage. I think these may be the last set of batteries for my RV, so I'm willing to spend a pretty penny to get them.
pianotuna 10/08/20 07:07pm Tech Issues
RE: SiO2 ? -UPDATE Tests.

I see voltages but no real stopping point to declare full charge. Is there a amperage level that says it is done like an AGM just hits a wall. Time2roll, I am not able to understand what you are asking--I suggest writing to the Azimuth folks.
pianotuna 10/08/20 04:55pm Tech Issues
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