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
The EG4 WallMount Indoor 280Ah is the better 48V solar battery overall, rated 4.4 to 4.3. The EG4 WallMount Indoor 280Ah costs $424.99 less ($2,700 vs $3,124.99).
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
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.
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 | EG4 WallMount Indoor 280Ah | EG4 WallMount All-Weather 280Ah |
|---|---|---|
| Overall rating | 4.4/5 | 4.3/5 |
| Value 35% | 91 $189 per rated kWh | 85 $219 per rated kWh |
| Output 15% | 29 140 A continuous (about 7.2 kW) | 29 140 A continuous (about 7.2 kW) |
| Warranty 15% | 100 10-year warranty | 100 10-year warranty |
| Safety listing 15% | 100 UL 1973, UL 9540 listed | 100 UL 1973, UL 9540 listed |
| Cycle life 10% | 100 8,000 cycles at 80% depth, maker rating | 100 8,000 cycles at 80% depth, maker rating |
| Features 10% | 70 inverter communication, self-heating; no app | 70 inverter communication, self-heating; no app |
Specifications
| EG4 WallMount Indoor 280Ah | EG4 WallMount All-Weather 280Ah | |
|---|---|---|
| Capacity | ||
| Case | Wall or floor mount | Wall or floor mount |
| Nominal voltage | 51.2 V | 51.2 V |
| Capacity | 280 Ah | 280 Ah |
| Energy | 14.3 kWh | 14.3 kWh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 8,000 at 80% depth | 8,000 at 80% depth |
| Power | ||
| Continuous discharge | 140 A | 140 A |
| Peak discharge | 200 A | 200 A |
| Max charge current | 140 A | 140 A |
| Modules in parallel | Up to 64 | Up to 64 |
| Safety and communication | ||
| UL 1973 | Yes | Yes |
| UL 9540A | Yes | Yes |
| UL 9540 | Yes | Yes |
| Communication | CAN, RS485 | CAN, RS485 |
| Works with inverters | EG4, Schneider, Sol-Ark, Victron, Growatt, Megarevo, Luxpower, Deye | EG4, Schneider, Sol-Ark, Victron, Growatt, Megarevo, Luxpower, Deye |
| Self-heating | Yes | Yes |
| App | No | No |
| Build | ||
| Display | Yes | Yes |
| Built-in breaker | Yes | Yes |
| Enclosure | IP20 | IP65 |
| Dimensions | 34.1 x 18.1 x 10.4 in (865 x 460 x 264 mm) | 36.1 x 22.3 x 9.1 in (916 x 566 x 232 mm) |
| Weight | 286.6 lb | 308.6 lb |
| Warranty | 10 years | 10 years |
| Released | 2024-04 | 2023-08 |