# ECO-WORTHY CUBIX100 48V 100Ah Rack Battery

Source: https://www.ranked10.co.uk/tech/best-lifepo4-batteries/eco-worthy-cubix100-48v-100ah
Ranked #4 in "Best LiFePO4 Battery 2026: 10 Ranked, and Where the Spec Sheets Slip": https://www.ranked10.co.uk/tech/best-lifepo4-batteries

- Price: £714.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 5.0 from 8 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0FNBQXRSW?tag=ranked10-21

ECO-WORTHY's CUBIX100 is a 100Ah LiFePO4 battery sold as a 48V server rack unit and listed in its technical details at 51.2 Volts. At £714.99 it takes fourth place in this guide, and it is the only battery here shaped to slide into a standard 3U cabinet rather than sit on a shelf. The listing gives its weight as 103 pounds and its size as 17.13 x 20.55 x 5.63 inches, and says one person can handle it.

The number that decides its place is the cost of the energy it stores. 51.2V multiplied by 100Ah comes to 5,120Wh, or 5.12kWh, so £714.99 works out at £139.65 per kWh. That is the highest figure in this guide: the 12V 100Ah Rvpozwer works out at £101.55 per kWh. The listing does not use one voltage figure consistently — the title says 48V, the monitoring bullet says "48V(51.2V)" and the technical details say 51.2 Volts. Everything on this page is taken from the Amazon listing, not from any test of our own.

## Specification

| Field | Value |
|---|---|
| Price | £714.99 |
| Customer rating | 5.0 out of 5 from 8 reviews |
| Stated voltage | 51.2 Volts (the title says 48V) |
| Capacity | 100Ah LiFePO4, 1.0 count |
| Price per kWh | £139.65 (calculated: £714.99 ÷ 5.12kWh) |
| Weight | 103 pounds (as listed) |
| Dimensions | 52.2 x 43.5 x 14.3 centimetres |
| Best Sellers Rank | 15,836 in Business, Industry & Science; 32 in Deep Cycle Batteries |

## Questions people ask

**Does the ECO-WORTHY CUBIX100 work out cheaper per kWh than a 12V battery?**

No. £714.99 for 5.12kWh is £139.65 per kWh, against £101.55 per kWh for the 12V 100Ah Rvpozwer in this guide.

**How much energy does the CUBIX100 store?**

51.2V x 100Ah = 5,120Wh, or 5.12kWh.

**Is it a 48V or a 51.2V battery?**

All three figures appear in the listing: the title says 48V, the monitoring bullet says "48V(51.2V)" and the technical details say 51.2 Volts.

**What protection does the ECO-WORTHY CUBIX100 have?**

Its bullet lists a 100A BMS, a 125A air switch and a battery power switch, inside a full-metal shell.

**What comes in the box?**

Parallel cables, communication cables, a grounding wire, terminal protective covers, screws and a user manual.

**How is the 5.0 rating made up?**

8 reviews, all five-star — the listing's histogram shows 100% at five stars.