Enjoybot batteries (affiliate links):

12V 100Ah: https://enjoybot.com/products/enjoybo...

12V 200Ah: https://enjoybot.com/products/enjoybo...

12V 300Ah: https://enjoybot.com/products/enjoybo...

Server Rack LiFePO4 Solar Batteries $.29 per Wh:

EG4 Budget Model 48V: https://shop.signaturesolar.us/produc...

Gyll (Pro Version) 48V: https://www.signaturesolar.us/product...

24V Budget Model: https://www.signaturesolar.us/product...

24V Pro Model: https://www.signaturesolar.us/product...