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
The ECO-WORTHY Cubix100 is the better 48V solar battery overall, rated 4.7 to 3.9. The ECO-WORTHY Cubix100 leads on safety listing, warranty and value. The SOK SK48V100N wins on features. The ECO-WORTHY Cubix100 costs $309.01 less ($889.99 vs $1,199).
SOK SK48V100N
#14 in Server rackFull review
A heated, app-connected 5 kWh rack module for off-grid builders who charge in the cold. Look elsewhere if your permit needs a UL listing.
Amazon $1,199$1,199
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the ECO-WORTHY Cubix100 for safety listing (UL 1973, UL 9540 listed vs no UL listing), warranty (10-year warranty vs 7-year warranty) and value ($174 per rated kWh vs $234 per rated kWh).
- Choose the SOK SK48V100N for features (inverter communication, self-heating, app vs inverter communication, app; no self-heating).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every server rack 48V solar battery; a clear win is highlighted. How we rank explains each one.
| Factor weight | ECO-WORTHY Cubix100 | SOK SK48V100N |
|---|---|---|
| Overall rating | 4.7/5 | 3.9/5 |
| Value 35% | 95 $174 per rated kWh | 81 $234 per rated kWh |
| Output 15% | 100 100 A continuous (about 5.1 kW) | 100 100 A continuous (about 5.1 kW) |
| Warranty 15% | 100 10-year warranty | 57 7-year warranty |
| Safety listing 15% | 100 UL 1973, UL 9540 listed | 0 no UL listing |
| Cycle life 10% | 60 6,000 cycles at 80% depth, maker rating | 60 6,000 cycles at 80% depth, maker rating |
| Features 10% | 70 inverter communication, app; no self-heating | 100 inverter communication, self-heating, app |
Specifications
| ECO-WORTHY Cubix100 | SOK SK48V100N | |
|---|---|---|
| Capacity | ||
| Case | Server rack (19-inch) | Server rack (19-inch) |
| Nominal voltage | 51.2 V | 51.2 V |
| Capacity | 100 Ah | 100 Ah |
| Energy | 5.1 kWh | 5.1 kWh |
| Usable energy | 5.1 kWh | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 at 80% depth | 6,000 at 80% depth |
| Power | ||
| Continuous discharge | 100 A | 100 A |
| Peak discharge | 120 A | 120 A |
| Max charge current | 100 A | 100 A |
| Modules in parallel | Up to 32 | Up to 48 |
| Safety and communication | ||
| UL 1973 | Yes | No |
| UL 9540A | Yes | No |
| UL 9540 | Yes | No |
| Communication | CAN, RS485, RS232 | CAN, RS485 |
| Works with inverters | Victron, Deye, Growatt, Lux Power, Sol-Ark, GoodWe, EG4, SRNE | Victron, SMA, Sol-Ark, Schneider, Growatt, Deye, Sunsynk, LuxPower, Studer, Voltronic, MPP, SRNE |
| Self-heating | No | Yes |
| App | Yes | Yes |
| Build | ||
| Display | No | - |
| Built-in breaker | Yes | Yes |
| Enclosure | - | IP20 |
| Dimensions | 22.09 x 19.02 x 5.63 in | 19.1 x 17.0 x 5.2 in |
| Weight | 103 lb | 100 lb |
| Warranty | 10 years | 7 years |
| Released | 2026-03 | 2025-08 |