The Home Battery ReportIndependent · No installer money

Tesla Powerwall 3 vs Enphase IQ Battery 10C

A straight, side by side read on specs and warranties, with the honest caveats. Every figure is from the manufacturer datasheet; sources are at the bottom.

Figure - Specs to scalebars vs the largest in our database
Tesla Powerwall 3 versus Enphase IQ Battery 10C: specs to scaleHorizontal bars comparing usable capacity, continuous power, warranty for Tesla Powerwall 3 and Enphase IQ Battery 10C, each scaled against the largest value in the home battery database.Tesla Powerwall 3Enphase IQ Battery 10CUsable capacity13.5 kWh10 kWhContinuous power11.5 kW7.08 kWWarranty10 yr15 yr
SpecTesla Powerwall 3Enphase IQ Battery 10C
ChemistryNot publishedLFP
Usable capacity13.5 kWh10 kWh
Continuous power11.5 kW7.08 kW
Peak powerNot publishedNot published
Round-trip efficiency89%90%
Warranty10 years60 percent capacity at up to 15 years or 6,000 cycles
Backup scopeWhole-home capableWhole-home capable
InverterIntegratedIntegrated

What actually differs

  • More usable capacity: the Tesla Powerwall 3 offers 13.5 kWh vs 10 kWh, so at that size it carries more of your home for longer per charge.
  • More continuous power: the Tesla Powerwall 3 sustains 11.5 kW vs 7.08 kW, which matters for running big loads like an AC at once.
  • Longer warranty term: the Enphase IQ Battery 10C is warranted 15 years vs 10, though always read the throughput or cycle cap too.
  • Efficiency is not apples to apples here: the Tesla Powerwall 3 quotes 89% (solar round trip (solar to battery to home); not a pure AC to AC figure) and the Enphase IQ Battery 10C quotes 90% (AC round trip (DC round trip is 96 percent)), so do not read the raw numbers as a direct ranking.

Which one pays off is a numbers question.

Neither spec sheet tells you the payback in your home. That comes from your rate plan and incentives.

Run the Worth It calculator →

Powerwall 3 vs IQ Battery 10C FAQ

Is the Tesla Powerwall 3 or the Enphase IQ Battery 10C better?

Neither is universally better. The Tesla Powerwall 3 carries more usable capacity (13.5 kWh vs 10 kWh), while the smaller unit can cost less and fit tighter spaces. The right pick depends on your home's loads, backup needs, and budget, not the brand on the box.

What is the difference in usable capacity between the Tesla Powerwall 3 and the Enphase IQ Battery 10C?

The Tesla Powerwall 3 offers 13.5 kWh and the Enphase IQ Battery 10C offers 10 kWh of usable capacity.

Which has more continuous power, the Tesla Powerwall 3 or the Enphase IQ Battery 10C?

The Tesla Powerwall 3 sustains 11.5 kW continuous vs 7.08 kW, which matters for running big loads like an air conditioner at once.

Which has the longer warranty, the Tesla Powerwall 3 or the Enphase IQ Battery 10C?

The Enphase IQ Battery 10C is warranted 15 years vs 10 for the Tesla Powerwall 3. Read the throughput or cycle cap too, since that can limit coverage before the year count does.

Is the Tesla Powerwall 3 or the Enphase IQ Battery 10C cheaper?

Neither spec sheet tells you the installed cost or the payback in your home. That depends on your electricity rate plan and local incentives, so run the numbers for your address rather than comparing sticker prices.

Sources

Source: Tesla Powerwall 3 datasheet, 2026. Specs verified 2026-07-01. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.

Source: Enphase IQ Battery 10C datasheet, Feb 2026. Specs verified 2026-08-06. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.