EG4 WallMount 314Ah

Published figures

No figures have been collected for motor-start current, end-of-warranty capacity, and warranty throughput.

Stated stack range

One unit: 12.86 kWh usable. Up to 32 units.

Compare stated stack ranges.

Usable and nominal energy

Nominal energy is the stated total stored energy. Usable energy is the stated amount available to draw.

EG4 WallMount 314Ah All Weather (16 kWh): EG4 WallMount 314Ah states 12.86 kWh usable and 16 kWh nominal energy (80% usable).

EG4 WallMount 314Ah Indoor (16 kWh): EG4 WallMount 314Ah states 12.86 kWh usable and 16 kWh nominal energy (80% usable).

Compare usable and nominal energy.

Stated temperature limits

Stated charging range: 32°F (0°C) to 122°F (50°C), EG4 WallMount 314Ah All Weather (16 kWh).

Stated charging range: 32°F (0°C) to 122°F (50°C), EG4 WallMount 314Ah Indoor (16 kWh).

Stated discharging range: −4°F (−20°C) to 131°F (55°C), EG4 WallMount 314Ah All Weather (16 kWh).

Stated discharging range: −4°F (−20°C) to 131°F (55°C), EG4 WallMount 314Ah Indoor (16 kWh).

Compare temperature limits.

After you enter a ZIP code, day counts describe outdoor air at the nearest station. A garage or indoor unit sees different air from the station. Output reductions inside the stated range are not counted.

Warranty terms

Compare warranties.

Features the manufacturer states

Government and program lists

This product is on none of the lists this site reads.

Installs

No install count this site publishes covers this product.

Recalls and safety notices

No notice in the recall sources this site reads is matched to this product. That is not a safety finding. See every recall notice.

• UL 9540 listed: Yes (EG4 WallMount 314Ah Indoor (16 kWh)) standalone DC ESS, 1-6 batteries
  Web page, at Models, retrieved Sep 25, 2026, dated Jan 28, 2026 Not yet checked
• UL 9540 listed: Yes (EG4 WallMount 314Ah All Weather (16 kWh)) as ESS with EG4 FlexBOSS18 / FlexBOSS21 inverters, 1-6 batteries
  Web page, at Models, retrieved Sep 25, 2026, dated Dec 30, 2025 Not yet checked
• UL 9540A tested: Yes (EG4 WallMount 314Ah All Weather (16 kWh))
  Spec sheet, at p.3 / Certifications & compliance, retrieved Sep 25, 2026 Not yet checked
• UL 9540A tested: Yes (EG4 WallMount 314Ah Indoor (16 kWh))
  Spec sheet, at p.3 / Certifications & compliance, retrieved Sep 25, 2026 Not yet checked

The maker states the listing or test. The listing body's records have not been checked.

Backup hours from your load

The stated usable energy divided by your load gives hours, starting with a full battery.

Continuous power: 10.2 kW (DC)

Backup hours follow the California Air Resources Board’s Zero Emissions Residential Backup Power Tool. Appliance figures come from the US Department of Energy’s Estimating Appliance and Home Electronic Energy Use (2012).

• The appliance figures are nameplate maximums. Average demand changes as appliances cycle and their settings change.
• A load above the stated continuous power gets no figure.
• Motor starts use three times the largest selected motor’s watts, plus the other loads. This estimate is checked against stated peak power when available. Other loads are counted at their running watts.
• Its 10.2 kW is stated on the DC side. The paired inverter’s AC rating can be lower and is not in this calculation.
• Inverter and battery losses are not counted. A field study of household backup power explains the gap.
• Solar recharge, reserves, and temperature changes are outside the calculation.