Enphase IQ Battery 10C

~$5,772approx. list price

800 WLights, phones, router, a CPAP
2,200 WFridge, freezer and the essentials
4,000 WFurnace blower, sump pump or a window AC
7,500 WWell pump or a small central AC
18,000 WWhole home with central air

7,080 W running, 14,160 W surge — sustains the furnace blower, sump pump or a window AC tier and everything below it.

Best forHomes with Enphase microinverter solar, or an AC-coupled retrofit, that want modular capacity and a long warranty rather than the highest single-unit output.

Installers now quote Enphase's fourth-generation battery ahead of the older IQ Battery 5P. Each 10C holds 10 kWh of LFP and carries its own neutral-forming microinverters, so a single unit can island a house without a separate hybrid inverter, and it can be stacked to 80 kWh. Continuous output is 7.08 kW with a 14.16 kW peak, which is a real step up from the 5P but still well short of a Powerwall 3 on the amps a central air conditioner draws at start. It is AC-coupled, which makes it the easy retrofit onto an existing solar array of any brand, though owners say it only feels seamless inside an all-Enphase system. The unit is heavy at 317 lb installed. Enphase publishes no retail price; $5,772 is a distributor's hardware price, and installed quotes with a controller and labor run roughly $13,000.

From the spec sheet

Specifications

Battery capacity: 10,000 Wh
Expandable to: 80,000 Wh
Continuous output: 7,080 W
Surge output: 14,160 W
Runtime: Fridge (~150W): ~66 hrs on one 10C; whole-home essentials (~1kW) about 10 hrs

Type: Home Battery System
Fuel: Battery (LiFePO4)
Outlets: None — hardwired through the IQ System Controller 3/3G backup gateway
Transfer-switch ready: Yes
Weight: 317 lbs
Warranty: 15-year limited (6,000 cycles, 60% retention)
Model: IQBATTERY-10C-1P-NA

10 kWh LFP, stacks to 80 kWh·7.08 kW continuous, 14.16 kW peak·15-year, 6,000-cycle warranty

At a glance

Strengths

+Built-in microinverters let one unit run backup without a separate inverter
+Modular: stack up to 80 kWh and add units as budget allows
+15-year warranty is the longest of the major brands
+Fan-free, LFP chemistry with no cobalt
+AC coupling makes it a straightforward retrofit to existing solar

At a glance

Drawbacks

−7.08 kW continuous trails the Powerwall 3's 11.5 kW, so big loads need several units
−317 lb installed weight needs a floor pedestal or a strong wall
−Installed cost with a controller and labor runs roughly $13,000, more than double the hardware price

Head to head