Enphase IQ Battery 5P with FlexPhase

The greenest battery on the wall

When the sun sets, it shines.

For years, solar only paid off while the sun was up. It powered your home and trimmed your daytime bills — but the moment the sun dropped or the grid failed, so did your savings. Every kilowatt-hour you didn’t use in the moment was clean energy exported for a few cents, or lost altogether.

The Enphase IQ Battery 5P with FlexPhase changes the arithmetic. It banks the clean energy your panels make so you can draw on it after dark, through a blackout, or across a run of grey days — using far more of what you generate instead of buying it back from a grid that still leans heavily on fossil fuels once the sun is down. Every stored kilowatt-hour is one you don’t have to import.

FlexPhase is what makes it genuinely future-proof: a single battery that backs up both single-phase and three-phase homes, so the system adapts to your house rather than the other way around. Start at 5 kWh and scale to 70 kWh as your needs grow.

Here’s the part most battery marketing skips. A battery’s real environmental cost is locked in the moment it’s made — so the greenest battery isn’t the one with the cleverest spec sheet, it’s the one that delivers the most clean energy before it ever needs replacing. That’s lifetime value, measured in kilowatt-hours and years rather than dollars alone. Enphase IQ Batteries are built for exactly that: lithium iron phosphate chemistry that’s cobalt-free, safer, and longer-lived; a 15-year warranty rated to 6,000 cycles; and a modular design that lets you add capacity instead of starting over. More clean energy harvested across its life, less embodied carbon behind every kilowatt-hour, and far less waste at the end of the road. The greenest battery is the one you never have to replace.

• A 15-year warranty, up to 6,000 cycles — among the longest in the industry, so it keeps working as hard as the day it was installed.
• Backup that restarts on sunlight — with Sunlight Jump Start, your IQ8 microinverters can wake the battery using solar alone after a long outage, no grid required.
• Built for the worst weather — IP55-rated to keep delivering through rain, hail, sleet, and snow.
• Smart load control — switch power-hungry appliances on or off from the Enphase App to stretch your charge through an outage, automatically or by hand.
• Low-voltage, high safety — like all Enphase products, IQ Batteries run on low-voltage DC, avoiding the hazards of high-voltage systems.
• Better over time — over-the-air updates bring new features to your system and the app long after install.
• Grows with you — start small, go big, add batteries as your needs change.

The Enphase IQ Battery is eligible for both Federal and state rebates.