EG4 WallMount Indoor 280Ah
A cheap per-kWh indoor wall battery for EG4 inverter owners who want 14 kWh blocks with a heater. Buy while stock lasts; the 314Ah model replaces it.
Signature Solar $2,700$2,700
4.3/5
A low-cost 16 kWh floor battery for off-grid and backup builders who want big capacity with few modules. Permitted grid-tied installs may need a model with UL 9540A.
- 16.1 kWhCapacity
- 200 AOutput
- 10,000Cycles
- NoUL 9540A
- 10 yearsWarranty
Check price at Amazon$2,499.99Check price at ECO-WORTHY$2,339.99
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 16 kWh in one cabinet, so a whole-home bank needs only a few units
- 200 A output runs a 10 kW inverter from a single battery
- Touchscreen, app and built-in fire-suppression aerosol
- Costs well under $150 per kWh
Cons
- 280 lb and ships by freight truck on a pallet
- Won’t charge below freezing
- No UL 9540A or UL 9540 paperwork for permitted installs
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 | ECO-LFP4831400 |
|---|---|
| Capacity | |
| Case | Wall or floor mount |
| Nominal voltage | 51.2 V |
| Capacity | 314 Ah |
| Energy | 16.1 kWh |
| Usable energy | 16.1 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 10,000 |
| Power | |
| Continuous discharge | 200 A |
| Max charge current | 200 A |
| Modules in parallel | Up to 15 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | No |
| UL 9540 | No |
| Communication | CAN, RS485, RS232 |
| Self-heating | No |
| App | Yes |
| Build | |
| Display | Yes |
| Built-in breaker | Yes |
| Dimensions | 33.13 x 19.69 x 10.24 in |
| Weight | 280 lb |
| Warranty | 10 years |
| Released | 2026-02 |
Alternatives in this case
EG4 WallMount All-Weather 280Ah
An outdoor-rated 14 kWh wall battery for EG4 inverter owners with no indoor space for storage. Compare it with the 314Ah All-Weather, which costs a little more per unit but less per kWh of extra capacity.
Signature Solar $3,124.99 Current Connected $3,124.99$3,124.99
Discover Helios ESS 16kWh
For homeowners who want a single large, heated, outdoor-rated battery that passes inspection. Its UL 9540 listing and direct inverter communication make it an easy choice for permitted grid-tied and off-grid builds.
NAZ Solar Electric $3,550$3,550
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