Powerwall 3 Expansion Specifications
Battery Technical Specifications
| Nominal Battery Energy | 13.5 kWh |
| Voltage Range | 52 - 92 V DC1 |
1Expansion units are connected in parallel and are not field serviceable.
Compliance Information
| Certifications | UL 1973, UL 9540 |
Environmental Specifications
| Operating Temperature | –20°C to 50°C (–4°F to 122°F)2 |
| Operating Humidity (RH) | Up to 100%, condensing |
| Storage Temperature | –20°C to 30°C (–4°F to 86°F), up to 95% RH, non-condensing, State of Energy (SOE): 25% initial |
| Maximum Elevation | 3000 m (9843 ft) |
| Environment | Indoor and outdoor rated |
| Enclosure Rating | NEMA 3R |
| Ingress Rating | IP67 |
| Pollution Rating | PD3 |
2Performance may be de-rated at operating temperatures above 40°C (104°F).
Mechanical Specifications
| Dimensions | 43.5 x 24 x 6.6 in (1105 x 609 x 168 mm)3 |
| Total Weight of Wall-Mounted Unit (includes cover and bracket) | 261.2 lb (118.5 kg) |
| Weight of Powerwall 3 Expansion (no cover or bracket) | 242.5 lb (110 kg) |
| Weight of Glass Front Cover | 14.5 lb (6.5 kg) |
| Weight of Wall Bracket | 4.2 lb (1.9 kg) |
| Weight of Expansion Harness | 2 lb (0.9 kg) |
| Weight of Expansion Unit Accessories | 1.5 lb (0.7 kg) |
| Mounting Options | Floor or wall mount |
| Stacking Capability (Floor Mount Only) | Up to (3) Expansion units behind a Powerwall 3 |
| Compatibility with Other Systems | Only compatible with Powerwall 3 |
| Connection to Powerwall 3 or Expansions | Expansion Harness4 |
3These dimensions include the glass front cover being installed on the Expansion unit.
4The Expansion Harness is a listed component of the UL 9540 certification.