Head to head
Tesla Powerwall 3 vs Enphase IQ Battery 5P
Tesla · Home Battery System
Tesla Powerwall 3
~$15,000
11,500 W · up to well pump or a small central AC
Enphase · Home Battery System
Enphase IQ Battery 5P
~$6,500
3,840 W / 7,680 W surge · up to fridge, freezer and the essentials
Quick takeThe Enphase IQ Battery 5P lists about $8,500 lower; the Tesla Powerwall 3 puts out more sustained power (11,500 W).
| Spec | Tesla Powerwall 3 | Enphase IQ Battery 5P |
|---|---|---|
| Approx. price | ~$15,000 | ~$6,500 |
| Type | Home Battery System | Home Battery System |
| Fuel | Battery (LiFePO4) | Battery (LiFePO4) |
| Running / output watts | 11,500 W | 3,840 W |
| Starting / surge watts | — | 7,680 W |
| Battery capacity | 13,500 Wh | 5,000 Wh |
| Expandable to | 54,000 Wh | 40,000 Wh |
| Noise | — | — |
| Runtime | Fridge (~150W): ~76 hrs (3+ days) per unit | Fridge (~150W): ~28 hrs per module |
| Outlets | Hardwired 120/240V whole-home via Gateway 3, Backup Gateway 2 or Backup Switch | Hardwired 240V AC-coupled; backup circuits via IQ System Controller |
| Fuel tank | — | — |
| Weight | 287 lbs | 174 lbs |
| Transfer-switch ready | Yes | Yes |
| Warranty | 10-year | 15-year |
Highlighted cell is the better figure for that row.
Owner pros and cons
Tesla Powerwall 3
- +11.5kW continuous + 185A LRA starts central AC without soft-starters
- +Integrated 6-MPPT solar inverter saves $2,000+ on new solar installs
- +Lowest installed cost per kWh of any major brand
- +LFP chemistry with 10-year, 70%-retention warranty
- +Storm Watch auto-charges before forecast severe weather
- −Some owners describe long support delays, though one early owner says support improved through 2025
- −Installer quote variance of thousands of dollars for identical systems
- −DC-couples only to Tesla's own solar - existing inverters must AC-couple
- −No federal tax credit in 2026 (25D expired) makes payback longer
Enphase IQ Battery 5P
- +15-year / 6,000-cycle warranty - longest in the industry
- +Distributed microinverters mean no single point of failure
- +Modular sizing: start at 5kWh, add modules anytime
- +96% DC round-trip efficiency
- +Seamless integration and monitoring with existing Enphase solar
- +7.68kW peak per module aids motor starting despite modest continuous rating
- −$1,000-1,600 per installed kWh - among the priciest mainstream options
- −Whole-home backup requires 3+ modules plus costly IQ System Controller
- −3.84kW continuous per module is weak alone - central AC needs multiple
- −Enphase-ecosystem lock-in for full functionality