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27 kWh
Battery moduleGrowatt

Growatt APX HV Battery US

5–30 kWh · 2.5–12 kW · Lithium Iron Phosphate · 6 configurations

UL 1973CEC listed · Dec 21, 2023
  • Usable energy27 kWh
  • Continuous power2.5–12 kW
  • Warranty10 years
  • ChemistryLithium Iron Phosphate

Overview

CEC Battery List

APX HV Battery US: 27 kWh usable energy; 2.5–12 kW continuous; lithium iron phosphate; 10 years warranty.

Models & configurations

CEC Battery List · 6 listings
ModelEnergyPowerGrid voltageRound tripCEC listed
APX 5.0P-S0-US5 kWh———Dec 21, 2023
APX 10.0P-S0-US10 kWh———Dec 21, 2023
APX 15.0P-S0-US15 kWh———Dec 21, 2023
APX 20.0P-S0-US20 kWh———Dec 21, 2023
APX 25.0P-S0-US25 kWh———Dec 21, 2023
APX 30.0P-S0-US30 kWh———Dec 21, 2023

Capacity & power

CEC Battery List

How long can it power your home?

Cali-Graf calculation
Average home loadRuntime from full
0.5 kW≈ 54 h
1 kW≈ 27 h
2 kW≈ 13.5 h
3 kW≈ 9 h
12 kW (full continuous power)≈ 2.2 h
Runtime = 27 kWh usable (datasheet) ÷ load. A typical home averages 1–2 kW; air conditioning and EV charging use much more. Inverter and wiring losses shorten it.

Charging from solar in Southern California

NLR PVWatts v8 · Cali-Graf calculation
CityDecemberJune
Los Angeles8.4 kW5 kW
Palmdale7.8 kW4.5 kW
Chula Vista7.2 kW5.1 kW
Huntington Beach7.9 kW5.5 kW
Riverside8.1 kW4.8 kW
Santa Clarita8 kW4.7 kW
Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

Installation & environment

CEC Battery List · Growatt datasheet

Warranty

CEC Battery List · Growatt datasheet

Safety listings

CEC Battery List
UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

Full specifications

CEC Battery List · Growatt datasheet

Compare with similar batteries

CEC Energy Storage System List
BatteryEnergyContinuous powerChemistryWarrantySoCal permits
BYD BATTERY-BOX PREMIUM HVL (US)12–32 kWh7.5–20 kWLithium Iron Phosphate10 years1
Tigo Energy GO Battery (US)27 kWh2.5–12 kWLithium Iron Phosphate10 years—
EG4 Electronics PP-100A15-18K1-LL25.6 kWh10.4–12 kWLithium Iron Phosphate10 years—
EG4 Electronics PP-100A15-18K1-LP25.6 kWh10.4–12 kWLithium Iron Phosphate10 years—
EG4 Electronics PP-16/280A2-18K1-AWLL28.6 kWh10.4–12 kWLithium Iron Phosphate10 years—
EG4 Electronics PP-16/280A2-18K2-AWLL28.7 kWh20.8–24 kWLithium Iron Phosphate10 years—
Same segment, similar capacity; each row from the same sources.

Documents

manufacturer documents

Questions & answers

How much energy does the Growatt APX HV Battery US store?

27 kWh usable, per the manufacturer datasheet.

How long can the APX HV Battery US power a home?

About 27 hours at an average 1 kW load from a full charge (27 kWh usable); higher loads shorten it.

What warranty does the APX HV Battery US have?

10 years (datasheet).

Sources

  1. California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
  2. California Energy Commission — Battery List, data as of Oct 7, 2026.
  3. Growatt — datasheet APX HV Battery System US Datasheet EN 202505.
  4. Growatt — document library on the manufacturer’s website (links above).
  5. NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
  6. Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).