Overview
The Tesla Powerwall 3 is a fully integrated solar and battery system: 13.5 kWh of LFP storage, up to 11.5 kW of continuous AC power and a built-in solar inverter accepting up to 20 kW DC of PV. A single unit starts heavy loads up to 185 LRA — enough for most homes — and expansion units scale capacity for larger projects, all managed from the Tesla app.
Key Features
- 13.5 kWh usable capacity (LFP); expandable with Powerwall 3 Expansion units
- Up to 11.5 kW continuous AC power; 185 LRA motor start
- Integrated solar inverter: 20 kW DC max PV input, 600 V withstand
- Whole-home backup with 200A service compatibility
- 97.5% solar-to-home efficiency; 89% solar-to-battery-to-home
- Floor or wall mount, indoor/outdoor; 10-year warranty
Technical Specifications
| Usable Capacity | 13.5 kWh (LFP) |
| Continuous Power | Up to 11.5 kW / 11,500 VA |
| Load Start | 185 LRA |
| Max Solar Input | 20 kW DC STC (600 V withstand) |
| Efficiency | 97.5% solar-to-home; 89% round trip via battery |
| Dimensions (H×W×D) | 43.5 × 24 × 7.6 in (1105 × 609 × 193 mm) |
| Installed Weight | 291 lb (132 kg) |
| Certifications | UL 9540, UL 9540A |
| Warranty | 10 years |
Specifications verified against the manufacturer's official documentation: Tesla official Powerwall 3 datasheet (2025).
Applications
The most-searched home battery in America — one unit backs up well pumps, RO booster pumps and household essentials; expansions extend runtime for multi-day resilience.
Frequently Asked Questions
Does the Powerwall 3 need a separate solar inverter?
No — a hybrid solar inverter is built in, accepting up to 20 kW DC of PV across its solar inputs. Panels connect directly to the Powerwall.
Can it back up my whole home?
Yes — with 11.5 kW continuous and 185 LRA starting capability, a single unit covers most 200A homes; larger homes add expansion units.
Can I add more capacity later?
Yes — Powerwall 3 Expansion packs add 13.5 kWh each without additional inverters.
What is the lead time?
Lead times vary with manufacturer production and freight schedules. Contact us at 408-969-2688 or sales@foreverpureplace.com and we will confirm current lead time and reserve stock for your project.
Why is no price shown?
Battery pricing changes frequently with manufacturer programs and freight. We quote current pricing the same day — call 408-969-2688 or use the Contact Us link and we'll respond with a formal quote.
Documents & Downloads
All documents open from the manufacturer's official resources.
