These are modular batteries you can purchase and wire to your personal specification.
For those looking for a plug-and-play function.
Some of the accessories you'll need generating your own electricity.
I don't have lithium batteries of this amp-hour size, but the cost/watt-hour is incredible.
Prismatic Lithium cells straight from China; they have warehouses in California with expedited shipment for a little more.
Also a direct source to China; they have Sodium Ion Batteries. Get $20 off through coupon code:superwhizy20
A place to buy modular batteries of random size you can hack together.
Where I've purchased a bunch of solar-related goods from Ian.
Purchased a boatload of solar panels from these people; they appear to be somehow associated with Signature Solar in Texas.
Found a couple of videos by Chris Beene from the internet and bought two pallets of panels from him in Texas a couple of years ago.
A Texas-based solar equipment retailer; very well known amongst the solar community.