Enphase IQ Battery 5P with FlexPhase vs Tesla Powerwall 3
Usable capacity: Enphase IQ Battery 5P with FlexPhase 5 kWh, Tesla Powerwall 3 13.5 kWh. The Enphase IQ Battery 5P with FlexPhase is better on 2 of 6 comparable points.
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Both models in detail
Who wins where
- Enphase IQ Battery 5P with FlexPhase
- Tesla Powerwall 3
Biggest differences
| Fact | IQ Battery 5P with FlexPhase | Powerwall 3 |
|---|---|---|
| Usable capacity | 5 kWh | 13.5 kWh |
| Weight | 83 kg | 130 kg |
| Warranty | 15 years | 10 years |
Score per area = position (0–100) relative to all 140 models in this category; higher is better.
| Technical specifications | EnphaseIQ Battery 5P with FlexPhase | TeslaPowerwall 3 |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | – |
| Wi-Fi / app | Yes1 | Yes2 |
| Performance | ||
| Usable capacity | 5 kWh1 | 13.5 kWh✓2 |
| Expandable up to | – | 94.5 kWh2 |
| Charge power (continuous) | – | 5 kW2 |
| Discharge power (continuous) | – | 11.04 kW2 |
| Efficiency | ||
| Round-trip efficiency | 90 %1 | – |
| Electrical | ||
| Coupling | AC-coupled1 | – |
| Phases | 31 | 13 |
| Backup power | Yes1 | Yes2 |
| Dimensions & weight | ||
| IP rating | IP551 | IP552 |
| Min. operating temperature | -20 °C1 | -20 °C2 |
| Width | 550 mm1 | 609 mm2 |
| Height | 980 mm1 | 1,105 mm2 |
| Depth | 188 mm1 | 193 mm2 |
| Weight | 83 kg✓1 | 130 kg2 |
| Warranty & lifespan | ||
| Warranted cycles | 6,0001 | – |
| Warranty | 15 years✓1 | 10 years2 |
Frequently asked questions
Which is better: the Enphase IQ Battery 5P with FlexPhase or the Tesla Powerwall 3?
Usable capacity: Enphase IQ Battery 5P with FlexPhase 5 kWh, Tesla Powerwall 3 13.5 kWh. The Enphase IQ Battery 5P with FlexPhase is better on 2 of 6 comparable points.
What is the usable capacity of the Enphase IQ Battery 5P with FlexPhase and the Tesla Powerwall 3?
Enphase IQ Battery 5P with FlexPhase: 5 kWh. Tesla Powerwall 3: 13.5 kWh.
Which is better on weight: the Enphase IQ Battery 5P with FlexPhase or the Tesla Powerwall 3?
Enphase IQ Battery 5P with FlexPhase: 83 kg. Tesla Powerwall 3: 130 kg.
Which is better on warranty: the Enphase IQ Battery 5P with FlexPhase or the Tesla Powerwall 3?
Enphase IQ Battery 5P with FlexPhase: 15 years. Tesla Powerwall 3: 10 years.
Related comparisons
How we collect and check this data →
Sources
- IQ Battery 5P with FlexPhase – EMEA data sheet, DSH-00477-9.0-EN-2026-08-21 — Enphase Energy, Inc. · accessed Sep 27, 2026
- Powerwall 3-Datablad, 2026 — Tesla, Inc. · accessed Sep 27, 2026
- ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed Sep 27, 2026