3.4 kWh

Home battery systemEnphase Energy

Enphase Energy IQ Battery 3T

3.4 kWh · 1.28 kW · Lithium Iron Phosphate

UL 9540UL 1741 SBCEC listed · Jan 21, 2021Installed in 58 SoCal permits

Usable energy3.4 kWh
Continuous power1.28 kW
Round trip (AC)89%
Warranty15 years
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

IQ Battery 3T: 3.4 kWh usable energy; 1.28 kW continuous; lithium iron phosphate; 15 years warranty; named in 58 Southern California permits.

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)3.4 kWh
Total energy (datasheet)3.5 kWh
Usable energy3.4 kWh
Rated power (CEC)1.28 kW
Max continuous discharge (CEC)1.28 kW
Continuous power (datasheet)1.28 kW
Peak power1.9 kW 10 seconds
Full-power discharge timeabout 2.6 h at full power
Round-trip efficiency (AC-AC)89%
Round-trip efficiency (datasheet)96%
ChemistryLithium Iron Phosphate
Grid connection240 V
Battery voltage (DC, nominal)67.2 V

How long can it power your home?

Cali-Graf calculation · CEC Energy Storage System List

Average home load	Runtime from full
0.5 kW	≈ 6.7 h
1 kW	≈ 3.4 h
1.28 kW (full continuous power)	≈ 2.6 h

Runtime = 3.4 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.

Power control (PCS) capableYes

Charging from solar in Southern California

NLR PVWatts v8 · Cali-Graf calculation · CEC Energy Storage System List

City	December	June
Los Angeles	1 kW	0.6 kW
Palmdale	1 kW	0.6 kW
Chula Vista	0.9 kW	0.6 kW
Huntington Beach	1 kW	0.7 kW
Riverside	1 kW	0.6 kW
Santa Clarita	1 kW	0.6 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).

Direct PV inputNo

Installation & environment

CEC Energy Storage System List · Enphase Energy datasheet

Installation locationoutdoor
Enclosure typeNEMA 3R
Operating temperature−15 to 55 °C
Mountingwall
Weight per kWh1 kWh

Warranty

CEC Energy Storage System List · Enphase Energy datasheet

Warranty term15 years
Capacity at end of warranty60–70%
Warranted cycles6,000 cycles

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by UL
Certificate date & editionNov 24, 2020 · Ed. 2 : 2020
UL 9540A (fire propagation test)Yes
Other standards on datasheetUL 1741, IEEE 1547, UL 9540A, UL 9540, UL 1973, UN 38.3, CSA C22.2

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

California grid & code compliance

CEC Energy Storage System List

UL 1741 SB (IEEE 1547-2018)Yes
UL 1741 SA (Rule 21)Yes
CSIP (IEEE 2030.5)Yes (with conditions)
JA12 declaration (Title 24)Yes
JA12 control strategiesBasic, TOU
CEC noteENCHARGE-3T-1P-NA consists of a LiFePO4 cell module, charge controller, four IQ8X-BAT microinverters and supporting electronics on a wall mounting bracket with a cover.
Last CEC updateNov 12, 2024
Monitor Key Data schedulingYes

Full specifications

CEC Energy Storage System List · Enphase Energy datasheet

Communicationcan
Manufacturer websiteenphase.com

Installs in Southern California

building permits

Permits name it

May 2022 – Aug 2026

Jurisdictions so far

LA County (unincorp.) (39), Palmdale (18), Los Angeles (1)

Units per install

median of 46 permits

Permits over time

Installed together with

Enphase IQ8+

ZNShine (model not specified)

Top ZIP codes

ZIP 9355111
ZIP 906047
ZIP 917446
ZIP 935526
ZIP 935505
ZIP 935913
ZIP 900472
ZIP 917222
Other ZIP codes8

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Who installs IQ Battery 3T

building permits · CSLB License Master

Safehome Solar

South Pasadena · CSLB #1081457

1 installMar 2023Los Angeles

Documents

manufacturer documents

PDF
IQ-Battery-3T-DS-EN-US-10-19-2021
Datasheet
PDF
IQ-Battery-3T-DS-EN-US-10-13-2021
Datasheet
PDF
IQ Battery 3T data sheet
Datasheet

Questions & answers

How much energy does the Enphase Energy IQ Battery 3T store?

3.4 kWh usable, per the manufacturer datasheet.

How long can the IQ Battery 3T power a home?

About 3.4 hours at an average 1 kW load from a full charge (3.4 kWh usable); higher loads shorten it.

Can the IQ Battery 3T be installed outdoors?

Installation location per the datasheet: outdoor; enclosure NEMA 3R.

What warranty does the IQ Battery 3T have?

15 years, at least 60–70% capacity at the end (datasheet).

Is the IQ Battery 3T UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by ul).

Who installs the IQ Battery 3T in Southern California?

Building permits name it 58 times. The most active licensed installers are Safehome Solar.

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
Enphase Energy — datasheet IQ-Battery-3T-DS-EN-US-10-19-2021.
Enphase Energy — document library on the manufacturer’s website (links above).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Contractors State License Board — License Master (contractor names and license status), as of Oct 5, 2026.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).