13.5kWh lithium-ion battery with integrated inverter. 11.5kW continuous, 185 LRA surge. Supports up to 20kW DC solar input. Whole-home backup. 10-year warranty (70% capacity retention).
| Dimensions | 1098 × 609 × 193 mm |
| Weight | 130 kg (286.7 lbs) |
| Operating Temperature | -20C to 50C |
It depends on your energy usage. For a typical US home with a $200/month electric bill, you'd need about 20 panels (410W each) for an 8 kW system. Use our quick estimate tool for a personalized calculation.
The Powerwall 3 has a module efficiency of ~21%, which means it converts that percentage of sunlight into electricity. This is competitive for residential solar panels.
Tesla offers a 10-year product warranty and 25-year performance warranty.
Key strengths: Integrated inverter (no separate), 11.5kW continuous, 185A surge starts any appliance, Tesla app. Considerations: Heavy 130kg, requires Tesla Certified Installer, higher price, 10yr warranty. It's a solid premium option from a Tier-1 manufacturer.
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