PlugIn Solar Guru
Plan my setupPlan

Eco-Worthy, 48-volt server-rack battery

Eco-Worthy Cubix 100 48 V 100 Ah Battery

Also written as Cubix 100, Eco-Worthy 48V 100Ah

A 5.12 kWh, UL 1973 listed 48 V rack battery with a 10-year warranty, a budget way to build a cabin bank.

Not yet available

Best for

A 48 V cabin or farm bank behind an EG4 6000XP or 12000XP, built up one module at a time.

Photo pending: we only show images we own or are licensed to use.

Strengths and limitations

Strengths

  • 5.12 kWh at 51.2 V; 100 A charge and discharge (dealer listing).
  • UL 1973, UL 9540A tested, CEC listed (Eco-Worthy).
  • About 6,000 cycles at 80% depth of discharge, REPT cells; 10-year warranty (Eco-Worthy).
  • Up to 32 in parallel (dealer listing).

Limitations

  • Store and charge it indoors where it stays above freezing.
  • Closed-loop communication with your inverter not confirmed in the sources we read; check the inverter's battery list.

What it does not do

  • Charge below freezing: 32 to 131 F charge range (dealer listing).
  • Carry a confirmed UL 9540 system listing: Eco-Worthy's own pages differ on whether that testing is finished.
  • Weigh little: 103 lb a module.

Specifications

From the cited source on 2026-11-10. "Not verified" means no source we checked published it.

Energy 5.12 kWh (51.2 V, 100 Ah) [2]
Charge / discharge 100 A max [2]
Charge temperature 32 to 131 F [2]
Cycle life About 6,000 at 80% depth of discharge [1]
Listings UL 1973; UL 9540A test; CEC listed [1]
Size / weight 22.55 x 17.13 x 5.63 in / 103 lb [2]
Parallel Up to 32 units [2]
Warranty 10 years [1]

Power and travel notes

Rated capacity: 5120 Wh. Over 160 Wh: forbidden on passenger aircraft per FAA. Shipping by carrier follows separate DOT and carrier rules.

Real runtime is less than capacity divided by load: conversion losses, battery reserve and temperature all cut into it. Size a battery for your fridge.

Before you buy

  • Follow the maker's rack, spacing and cabling rules.

Sources

  1. Eco-Worthy Cubix 100 51.2V 100Ah server rack battery, Eco-Worthy (Canada store) (manufacturer), read 2026-11-10. UL 1973 certified and UL 9540A tested; CEC listed; 47 kg (103 lb); 10-year warranty; REPT Grade A prismatic cells, about 6,000 cycles at 80% depth of discharge. FAQ on one version of the page says UL 9540 system certification is in progress; another says the V4 has undergone UL 9540 testing by Intertek.
  2. ECO-WORTHY Cubix 100 48V 100Ah server rack battery (dealer listing), Off Grid Stores (Eco-Worthy dealer) (retailer), read 2026-11-10. 100 Ah, 5,120 Wh, 51.2 V; 40 to 58 V range; 100 A max charge/discharge; charge 32 to 131 F, discharge -4 to 131 F; max charge 58.4 V; 22.55 x 17.13 x 5.63 in; 103 lb; UL 1973, UL 9540A, CEC listed; Cubix 100 is the V3 with a new label; app supports 32 parallel units.

Comparable options

Same kind of product. Tick two or more to compare.