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
The ECO-WORTHY Wallbank S100 is the better 48V solar battery overall, rated 4.2 to 4.0. The ECO-WORTHY Wallbank S100 leads on value and output. The Growatt ALP 5.0L-E2 US wins on safety listing. The ECO-WORTHY Wallbank S100 costs $677.56 less ($869.99 vs $1,547.55).
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
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 Wallbank S100 for value ($170 per rated kWh vs $302 per rated kWh) and output (100 A continuous (about 5.1 kW) vs 60 A continuous (about 3.1 kW)).
- Choose the Growatt ALP 5.0L-E2 US for safety listing (UL 1973, UL 9540A listed vs no UL listing).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every wall and floor mount 48V solar battery; a clear win is highlighted. How we rank explains each one.
| Factor weight | ECO-WORTHY Wallbank S100 | Growatt ALP 5.0L-E2 US |
|---|---|---|
| Overall rating | 4.2/5 | 4.0/5 |
| Value 35% | 96 $170 per rated kWh | 66 $302 per rated kWh |
| Output 15% | 100 100 A continuous (about 5.1 kW) | 43 60 A continuous (about 3.1 kW) |
| Warranty 15% | 100 10-year warranty | 100 10-year warranty |
| Safety listing 15% | 0 no UL listing | 100 UL 1973, UL 9540A listed |
| Cycle life 10% | 60 6,000 cycles at 80% depth, maker rating | 50 cycle life not published (neutral score used) |
| Features 10% | 70 inverter communication, app; no self-heating | 70 inverter communication |
Specifications
| ECO-WORTHY Wallbank S100 | Growatt ALP 5.0L-E2 US | |
|---|---|---|
| Capacity | ||
| Case | Wall or floor mount | Wall or floor mount |
| 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 | 4.6 kWh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 6,000 at 80% depth | - |
| Power | ||
| Continuous discharge | 100 A | 60 A |
| Max charge current | 100 A | 60 A |
| Modules in parallel | Up to 32 | Up to 8 |
| Safety and communication | ||
| UL 1973 | No | Yes |
| UL 9540A | No | Yes |
| UL 9540 | No | No |
| Communication | CAN, RS485, RS232 | CAN |
| Works with inverters | Pylon, Growatt, Deye, Victron, SRNE, LuxPower, GoodWe | Growatt |
| Self-heating | No | - |
| App | Yes | - |
| Build | ||
| Display | No | - |
| Built-in breaker | Yes | - |
| Enclosure | - | IP66 |
| Dimensions | 18.2 x 19.1 x 5.8 in | 28.0 x 7.3 x 11.6 in |
| Weight | 97 lb | 101.4 lb |
| Warranty | 10 years | 10 years |
| Released | 2026-03 | 2024-06 |