ECO-WORTHY Cubix100
#1 in Server rackFull review
A low-cost, UL-listed 5 kWh rack module for permitted indoor home backup. Pick a heated or low-temp model if it lives in an unheated space.
Amazon $889.99 ECO-WORTHY $889.99$889.99
4.6/5
A proven 5 kWh rack module with a screen and wide inverter support, for indoor home backup and off-grid banks. Choose the heated SGH48100T for cold sheds.
- 5.1 kWhCapacity
- 100 AOutput
- 7,000Cycles
- YesUL 9540A
- 10 yearsWarranty
Check price at Amazon$1,121Check price at SunGoldPower$1,090
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- UL 1973 recognition and a claimed UL 9540A test help with permits
- Built-in LCD shows status without a laptop or app
- Works closed-loop with Growatt, Victron, Luxpower, Schneider and SunGoldPower inverters
- Up to 63 modules in parallel for very large banks
Cons
- Won’t charge below freezing, so cold sheds need heat
- No phone app; status is on the LCD or through the inverter
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its case. How we rank explains each one.
Specifications
| Model number | SG48100P |
|---|---|
| Capacity | |
| Case | Server rack (19-inch) |
| Nominal voltage | 51.2 V |
| Capacity | 100 Ah |
| Energy | 5.1 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 7,000 at 80% depth |
| Power | |
| Continuous discharge | 100 A |
| Peak discharge | 150 A |
| Max charge current | 100 A |
| Modules in parallel | Up to 63 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | Yes |
| UL 9540 | No |
| Communication | CAN, RS485, RS232 |
| Works with inverters | Growatt, Deye, SunGoldPower, Luxpower, Victron, Schneider, Phocos, SMK |
| Self-heating | No |
| Build | |
| Display | Yes |
| Built-in breaker | Yes |
| Enclosure | IP20 |
| Dimensions | 19.3 x 18.9 x 5.5 in |
| Weight | 93 lb |
| Warranty | 10 years |
| Released | 2023-07 |
Alternatives in this case
Ruixu RX-LFP48100-H
#3 in Server rackFull review
The heated version of Ruixu’s UL 1973 rack module, for cold garages and cabins. It costs only about $40 more than the unheated one.
Ruixu $1,099$1,099
Ruixu RX-LFP48100
#4 in Server rackFull review
A UL 1973 certified 5 kWh rack module at a fair price for indoor home or cabin systems. Get the -H version if it lives somewhere that freezes.
Ruixu $1,059$1,059
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