3 ms·
Tell that to my 12 year-old battery bank powering my family house (solar with diesel backup charge). It is a pack of deep cycle lead-acids that have served me
by sandworm101 5y ago
Tell that to my 12 year-old battery bank powering my family house (solar with diesel backup charge). It is a pack of deep cycle lead-acids that have served me very well. Of course they are watched and maintained regularly, and rarely ever dip below 75%.
The only use case I've ever seen for lithium off-grid is for people who want to squeeze their entire rig into a closet or basement corner. And nobody ever talks about what to do with those batteries once they finally die. My packs will be easily recycled.
- Solar2 5y agoSee, exactly proves my point. DOD is only 25%. If you do not cycle them much, you can make a lead acid last for years no problem. If you are doing 100% DOD, and do not with to deal with maintenance, and wish to have high coulombic efficiency, lithium is far better. Volumetric density is a side benefit of lithium. We use it for coulombic efficiency, low voltage sag, high cycle life (much higher than lead acid, regardless of cycling bandwidth), usable capacity at low temperatures (much higher than lead acid! People always get this wrong), and higher specific energy. And lead acid sulfation and shorted cells require recycling. You can safely use a lifepo4 pack for years after degradation occurs. Lead acid is easier to recycle, but lithium ion recycling companies are dominating the space now. It is not like it was 3 years ago. Times are changing and there is no way anyone wants to throw out cobalt from a pack. LFP is much easier to recycle than cobalt based chemistries as well.
- Syonyk 5y agoSolar2 == willprowseiv? Brand new account responding as such, at least. Which production lithium ion recycling companies are "dominating the space" and actually recycling more than test quantities of cells? Apparently I've missed that in the past few years - links to them?