Microinverters in the battery. Same as the panels.
Enphase built its reputation on a different architecture from everyone else's — instead of one big string inverter doing the work for the whole system, each solar panel gets its own tiny microinverter. The IQ Battery 10C extends that idea to storage: four IQ8B microinverters are embedded in the battery itself, so each 2.5 kWh section is independently managed. If one fails, the other three keep running. No single point of failure.
It also has the longest warranty in the category — 15 years and 6,000 cycles. Tesla, Anker and Sigenergy all warrant 10 years. That extra five years matters: solar payback rarely hits before year 7, so a 15-year warranty puts the whole productive life of the battery on Enphase's books, not yours.
4 embedded microinverters
No single point of failure. Each 2.5 kWh module is independently managed.
15-year warranty
The longest in the category. 6,000 cycles. Covers the full productive life.
UL 9540A certified
Highest US safety certification. LFP chemistry, cobalt-free, indoor-rated.
Cleanest retrofit
AC-coupled — drops onto an existing solar system without ripping out the inverter.
The numbers, in full.
- Usable energy
- 10.08 kWh (two 5.04 kWh LFP modules)
- Continuous power
- 7.08 kVA / 7.08 kW
- Peak power
- 14.16 kVA (motor-start)
- Embedded inverters
- 4 × IQ8B grid-forming microinverters
- Battery chemistry
- Lithium iron phosphate (LFP) — cobalt-free
- Coupling
- AC-coupled — works with any existing solar inverter
- Backup
- Whole-home or partial backup with IQ System Controller
- Scalability
- Up to 4 units = 40.3 kWh
- Safety certification
- UL 9540A (highest US battery safety standard)
- Monitoring
- Enphase Enlighten app — module-level visibility
- Warranty
- 15 years · 6,000 cycles · 60% capacity retention
- Certification
- CEC-approved, AS/NZS 5139
The right call when…
The IQ Battery 10C is the cleanest battery to retrofit onto an existing solar system. Because it's AC-coupled with its own microinverters built in, it doesn't care what brand of solar inverter you already have — it just plugs into the house's AC bus and works.
- You already have solar and you're happy with the inverter — don't want to replace it
- You already have an Enphase solar system (this is the natural battery for you)
- You want the longest warranty available in 2026
- You'd rather have 10 kWh of battery and spend less than max-spec a 13.5 kWh unit
Where it falls short.
Lower continuous output than its peers. 7.08 kW is enough to run most of a home but won't comfortably start a 5+ kW ducted reverse-cycle compressor on backup. If whole-home backup including ducted AC is a priority, the Powerwall 3's 11.04 kW continuous is the safer pick.
No built-in solar inverter. For a new install with both solar and battery, you're buying two inverters (the solar one + the four micro-inverters in the battery). That's typically $1.5–2.5k of overlap vs an all-in-one like the Powerwall 3 or SigenStor. The IQ 10C makes most sense when the solar is already there, or when you specifically want Enphase microinverters on the panels too.
Smaller fixed capacity. 10.08 kWh is meaningful but smaller than the Powerwall 3 (13.5 kWh) and the higher SOLIX X1 / SigenStor configurations. For households cycling 12+ kWh of evening load, you may need two IQ 10Cs.