Anker: Home Electric Power backup

Tesla Power Wall is apparently not the only option for home electric power backup

 Anker SOLIX F3800 + Smart Home Power Kit - Anker US

$3,869.00 (regular $5,237.00)

Anker Innovations - Wikipedia

Anker Innovations Co., Ltd,[a] commonly known as Anker,[b] is a Chinese electronics manufacturer based in Changsha, Hunan, China. The company's product range includes phone chargers, power banks, earbuds, headphones, speakers, data hubs, 3D printers, charging cables, torches (flashlights), and screen protectors, among other products.