3 ms·
I would have thought that by now LFP has mostly overtaken FLA for home use. I can pick up LFP cells for just over $100/kWh, which is about what it costs me to
by rootusrootus 5y ago
I would have thought that by now LFP has mostly overtaken FLA for home use. I can pick up LFP cells for just over $100/kWh, which is about what it costs me to get FLAs, but with far longer lifespan.
- matmatmatmat 5y agoGot a link to where I could pick up those LFP cells for just over $100/kWh?
- rootusrootus 5y agoHead over to diysolarforum.com and look for the group buy thread (it's not really a group buy anymore, it's ongoing). I picked up four 280Ah cells for right at $400 (exact amount varies a bit on shipping destination). Rumor has it that shipping has gotten pretty slow in the last few months, however, so you have to be patient. Anyway, that gives you 3.36kW of capacity (assuming a 12V 4S config) for $119/kW. To be fair, it will be slightly more when you price in your BMS of choice.
- ncmncm 5y agoBe sure to invest in a cheap spot-welder to put on charging tabs. Soldering to the ends of batteries is very dangerous. (Even if you see people saying they do it without obvious trouble. Key is "obvious".)
- fy20 5y agoLFPs are usually packaged ready to use with screw terminals, so no welding needed. You just need to connect them with bus bars in your desired configuration.