ECO-WORTHY Wallbank S100
An inexpensive wall-hung 5 kWh battery for indoor off-grid or backup systems. Pick the UL-listed Cubix100 if you need a permit.
ECO-WORTHY $869.99$869.99
3.9/5
For off-grid cabins and homesteads that need a lot of heated storage for the least money and don’t need UL paperwork. Grid-tied homes facing inspection should pick a UL 9540 battery instead.
- 16.1 kWhCapacity
- 150 AOutput
- 8,000Cycles
- NoUL 9540A
- 12 yearsWarranty
Check price at BigBattery$2,990
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 16 kWh for about $187 per kWh, among the lowest prices for a single big battery
- Self-heating lets it charge in a cold garage or cabin
- 150 A continuous runs a 7.6 kW inverter from one unit
- Long 12-year warranty
Cons
- No UL certification, so it suits off-grid builds rather than permitted grid-tied installs
- Indoor only, and at about 315 lb it is hard to move
- Newly launched, with no track record yet
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 | F-NXUS2-48161-G1 |
|---|---|
| Capacity | |
| Case | Wall or floor mount |
| Nominal voltage | 51.2 V |
| Capacity | 314 Ah |
| Energy | 16.1 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 8,000 |
| Power | |
| Continuous discharge | 150 A |
| Peak discharge | 270 A |
| Max charge current | 150 A |
| Modules in parallel | Up to 15 |
| Safety and communication | |
| UL 1973 | No |
| UL 9540A | No |
| UL 9540 | No |
| Communication | CAN, RS485 (RJ45) |
| Works with inverters | EG4, Victron, Deye, Solis, GoodWe, BigBattery APEX, Pylon protocol |
| Self-heating | Yes |
| App | No |
| Build | |
| Enclosure | IP54 |
| Dimensions | 500 x 782 x 400 mm (19.7 x 30.8 x 15.7 in, W x H x D) |
| Weight | 315 lb |
| Warranty | 12 years |
| Released | 2026-10 |
Alternatives in this case
Growatt ALP 5.0L-E2 US
An outdoor-rated 5 kWh battery for owners of a Growatt US hybrid inverter. Owners of other inverter brands get more for less from a rack module.
Amazon $1,547.55$1,547.55
Fortress Power eVault MAX 18.5
One of the largest single 48 V batteries sold, for whole-home or light-commercial systems installed by a dealer. Expect to pay dealer prices and plan for a heavy floor-standing cabinet.
Solamp $6,479$6,479
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