Quick answer: ECO-WORTHY is a system sold in parts, and the reviews reward buying it that way. The Cubix100 48V 100Ah battery ($999.99) is the storage endgame — stackable, UL9540,
Quick answer: DC HOUSE is a golf-cart lithium conversion brand, and the honest story is one product with two sizes. The 48V 100Ah metal-case kit ($869.99) is the conversion: one