FranklinWH aPower 2 vs Enphase IQ Battery 5P: What the Datasheets Say

The FranklinWH aPower 2 and Enphase IQ Battery 5P sit at different scales, one a large single unit and the other a small stackable module. This comparison lists only published figures so the numbers read directly rather than through a ranking.

How to read this comparison

Every figure below comes from the named manufacturer's own product page or datasheet. Capacity in kilowatt-hours sets runtime, and continuous power in kilowatts sets how much runs at once. Because the aPower 2 is one large unit and the 5P is a small module, a single-unit comparison is a scale mismatch, not a quality judgment.

Reaching aPower-level capacity with Enphase means stacking multiple 5P modules. Both products use lithium iron phosphate chemistry.

No winner is declared. The right choice depends on target system size, retrofit versus new install, and installer availability.

FranklinWH aPower 2, from FranklinWH's specs

FranklinWH lists the aPower 2 at 15 kWh of capacity with 10 kW of continuous power. It uses lithium iron phosphate battery technology.

FranklinWH backs the aPower 2 with a 15-year warranty and lists a 60 MWh throughput figure.

Enphase IQ Battery 5P, from Enphase's specs

Enphase lists the IQ Battery 5P at 5.0 kWh usable capacity with 3.84 kW continuous power, and peak output of 7.68 kW for 3 seconds. It is an AC-coupled unit with six embedded grid-forming microinverters.

Enphase specifies cobalt-free lithium iron phosphate cells with 90% roundtrip efficiency, designed to be stacked. The warranty is 15 years, rated up to 6,000 cycles.

Where they differ on paper

Single-unit scale is the big split. The aPower 2 lists 15 kWh and 10 kW continuous in one unit, while the IQ Battery 5P lists 5.0 kWh and 3.84 kW continuous per module. Reaching aPower capacity with Enphase means stacking three or more 5P units.

Architecture differs too. The 5P is AC-coupled with six embedded microinverters, while the aPower 2 works with FranklinWH's aGate controller for whole-home management.

Warranty terms are close in years but stated differently: FranklinWH lists 15 years plus 60 MWh throughput, while Enphase lists 15 years up to 6,000 cycles. Both use LFP chemistry. Which fits depends on target size and install type.