Good Agm batteries

Begginer7 said:

By chance I found a small provider that has 5 of this in stock https://rollsbattery.com/battery/6-fs-gc/ but I am a little disappointed at the life cycle at 50% discharge of about 1500, he is asking 250€ each.

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Yes, that I think is one of their more economical batteries. I, myself bypassed them completely. Here's the battery that I finally selected for my workshop. Performance has been excellent, and they have double the 50% discharge life as the one you referenced. Keep in mind though that they are F***ing heavy.

I found locally some batteries 12v 100ah of a brand called Genesis, the vendor is selling them for PV but on the web site https://www.enersys.com/en-gb/products/batteries/genesis/genesis-td/ they dont seem to be classes like that, does anyone have some info on them?

Begginer7 said:

they dont seem to be classes like that

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Those are a lead acid batteries
Says non-spillable so probs AGM

I prefer flooded over AGM but lots of people buy AGMs for solar.

Begginer7 said:

I found locally some batteries 12v 100ah of a brand called Genesis, the vendor is selling them for PV but on the web site https://www.enersys.com/en-gb/products/batteries/genesis/genesis-td/ they dont seem to be classes like that, does anyone have some info on them?

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I contacted the manufacturer who said this are not made for off grid use, they suggested a diferent product, however its pricey at 295 € plus VAT.

I am tabulating the quotes I got by the price of Wh taking in account the Rech. Cycles at 50% DoD and I see no real surprises except one, I got a quote for a flooded Trojan 27TMH that is 162eur, I dont see the 50% DoD on the specs but if its around 1400 this is a good price, I am correct or there is a catch I dont see.

Rbertalotto said:

Duracell AGM, 110AH at Sam's Club....Around $190 each . .....snip.......

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Those are a good value. They are made by Deka/East-Penn in the USA.

I had a rebadged Deka from Bass-Pro for about 8 years. It was my first AGM and I learned a lot.

It is true that a well-cared-for and quality FLA will last longer. OTOH, it is easier to make a fatal mistake. You might even need to rebuild the corroded battery tray.

Where I live, there is a battery shop that sells pull-out AGMs. I have built three banks with these. They cost 75 cents / Ah, so a 100Ah costs $75 plus tax and no core charge. They are just over 5yo per the mfgr date. I have gotten about three years per bank until one goes bad and I just get another bank. I sell the bad ones back to the shop.

My current bank is 24V and 4800Whs for $300.

BTW....I just this week finally had to replace my Duracell AGM that is connected to my back up sump pump. It was showing 10.5 volts and still running the pump, but much slower water output. This battery was installed when I bought the house in 1998!!!!!! I check it monthly and saw the voltage dropping about 6 months ago. Optimate battery maintainer....I will use no other (My 2007 motorcycle has the original; battery on an Optimate charger and still tests good)

I have SunXtender AGM in the U.S.
Don't know where they ship.
Spec says 10 year float life, 700 cycles to 70% DoD.
I got them because I want zero maintenance, relatively small bank. Not cheap, $5000 for 20kWh two years ago.