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ECO-WORTHY (Brand+) Store via [aliexpress.com] has AliExpress has ECO-WORTHY Cubix100 48V 100Ah 5120Wh LiFePO4 Server Rack Battery w/ 100A BMS + Bluetooth UL1973 & UL9540A on sale for $527 when you clip the $110 off coupon USAFF110 and Apply it at checkout.Shipping is free from US warehouse.

ECO-WORTHY Cubix100 has successfully undergone system-level UL 9540 testing conducted by Intertek, covering both DC and AC systems. UL9540 is the must‑have certification for legal home battery installations in the U.S