I bought a 'lifetime warranty' on a Lazy Boy recliner. It broke after 10yrs but wasn't covered as Oregon law has defined 'lifetime' warranties expire after 7yrs.This is subjective. What is considered a "life time"? 1yr, 5yr, 10yr, 20yr ?????
And to be honest, "everything" lasts a life time.
Iron edison batteries are what I was talking about. For a home solar/off grid system they last for decades. The issue is the extreme costLifetime as in 40+ years. http://nickel-iron-battery.com/ Nickel Iron battery often lasts in excess of 40 years
off gid in Chicago 2001 http://nickel-iron-battery.com/Nickel-Iron-Solar-Chicago.pdf don't know if this guy is still around but interesting reading
maintenance is not an issue, replacing lithium-ion batteries every 5-10 yrs can be expensive. If used for a fixed solar system and space/weight is not an issue I think they would be ideal. Since the power density is not their for in-rush loads I wonder if you can create a hybrid battery setup and add some lithium batteries to help supply the in-rush current when a compressor/AC is turned on.i have a couple ones laying around from old laptop batteries
at some point, i do wanna mess with them, but not right now
why do you think, that they can last a lifetime? their memory effect is pretty severe and they dry out over time
nvm, i thought you meant nickel hydrate batteries
From what i'm reading, they behave like lead acid batteries, except they dont sulfate or similar when discharged, so they dont loose capacity due to being discharged to any point. But they need to be refilled with water every couple of weeks, loose charge over time and are similiar inefficient like lead acid while being charged. Defenitly a neat old technology and they can be usefull for certain scenarios, but i find lithium batteries leagues better for a powerwall.
I saw some 4 or 5 years ago on Ebay. Used not just one cell. like is on ebay now. The new ones on ebay work out to $659 a kWh of storage.Maybe you can find some second hand ones.