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Beginner Solar
I tried that, it was painful so I stopped. Do you see spots too?
I’m needing a new lead battery for my solar as I might be selling my lithium batteries. Buying a motorcycle and working on the roof takes precedence. Do you recommend the Napa battery?
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Moving away from lithium to lead. Anarchy. Cats sleeping with dogs kind of stuff.

I have a holey roof that I have to make unholey. Reverse exorcism. Eternal bonds to bind the roof.
[-] The following 1 user says Thank You to Wayne49 for this post:
  • Roadtripp (08-15-2020)
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I’m bucking the trend of changing from Lead to Lithium mainly because my Nissan Leaf battery voltages don’t match up with my system very well. I’m only able to use the lower half of the Leaf battery capacity with my 12 volt inverter, battery, and DC-DC Charger. The Leaf batteries would work good with a 48 volt system because I could use the full capacity. 
 I heard there are some deals on BYD batteries on eBay. The price on these looks good but I don’t know if the capacity is good.
https://www.ebay.com/itm/2-matched-BYD-L...SwUMpeIfnO
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(08-13-2020, 10:48 PM)Roadtripp Wrote: I tried that, it was painful so I stopped. Do you see spots too?
I’m needing a new lead battery for my solar as I might be selling my lithium batteries. Buying a motorcycle and working on the roof takes precedence. Do you recommend the Napa battery?

heres what i have https://www.napaonline.com/en/p/NBP8231?partTypeName=Battery+-+Marine+and+RV&keywordInput=rv+battery east penn battery so you can find the same battery under a different name,100 amp hours,one step up from a starter battery,i run a couple led's,a couple fans and laptop all evening and will be at 12.5-12.6 in the morn add the 5 amp draw from my furnace blower motor and your pushing it,add a fridge running and your probably pushing it to far,i plan on upgrading to 200 amp hours some way but $150 and i have been doing everything i want for two years now
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(08-22-2020, 09:28 AM)Roadtripp Wrote:  I heard there are some deals on BYD batteries on eBay. The price on these looks good but I don’t know if the capacity is good.
https://www.ebay.com/itm/2-matched-BYD-L...SwUMpeIfnO

They don't even state what the original capacity was.  I know I don't want a 24V or 48V system.
Brian

2000 Roadtrek 200 Versatile "The Beast" (it has been tamed hopefully)  I feed it and it doesn't bite me.   Angel
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East penn make a pretty good flooded marine battery.
but it is still a marine battery, not true deep cycle.
When needing 200+ Ah of capacity and not requiring powering large draw items like inverters powering coffee pots/microwaves, the golf cart gc-2 batteries are far superior in cycling durability.


Morning voltage is a good indicator, on a specific battery, compared to itself.

Batteries intended for northern climates will have higher specific gravity than those for southern.  Higher specific gravity means higher voltage retention/ more CCA.  The stronger acid eats the plates faster though.

So if max voltage retention by morning  alone were the only benchmark one cared about as a performance indicator, then the flooded battery designed for Far north Canada would appear to be far superior than the one intended for the tropics. Yet the one for the tropics would outcycle the other all factors being equal, it would just have lower morning voltage and appear to be weaker.

Does EP change their electrolyte strength for batteries intended for northern/southern climates?
I'd hope so but expect not.
6v Golf cart batteries  in series might not seem to perform as well as a pair of 12v marine batteries in parallel, in the voltage retention department, but with equal treatment, the GC-2 batteries will accumulate 2 to 3x more total cycles
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Speaking of GC2 batteries, the batteries I’m salvaging tomorrow are Trojan T105’s. Supposedly there’s 4 that have some health left. And 8-10 that are dead for scrapping. It’s going to be a lot of weight in my van.
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which is more important,shortest solar panel wiring or being able to check your charge controller easily?

i have no walls,just windows,to put a charge controller in a cupboard would increase the wire length 8 or so feet,a direct route would put my charge controller in the battery box and i would have to go outside and open the door to check it
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My opinion is............
Compromise , put it in the cabinet and run bigger ga wire from the battery.
If it won't fit into the controller ,
run it anyway and butt connector it to a piece of the biggest wire the controller will accept right at the controller...

I buy up to 6 ga connectors at Advance Professional/Carquest but they probably have bigger !
stay tuned 
popeye


 Weirdo Overlord : FMS Fleet Ops , Awards , Badges ,  aka Tamerlane the Impaler Mod.
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