9–18 kWh

Battery moduleQcells

Qcells Q.SAVE

10–20 kWh · 5.5–11.1 kW · Lithium Iron · 3 configurations

UL 1973CEC listed · Apr 11, 2023Installed in 30 SoCal permits

Usable energy9–18 kWh
Continuous power5.5–11.1 kW
Warranty10 years
ChemistryLithium Iron

Overview

CEC Battery List

Q.SAVE: 9–18 kWh usable energy; 5.5–11.1 kW continuous; lithium iron; 10 years warranty; named in 30 Southern California permits.

Models & configurations

CEC Battery List · 3 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
Q.SAVE D10.0SX	10 kWh	—	—	—	Apr 11, 2023
Q.SAVE D15.0SX	15 kWh	—	—	—	Apr 11, 2023
Q.SAVE D20.0SX	20 kWh	—	—	—	Apr 11, 2023

Capacity & power

CEC Battery List

Nameplate energy (CEC)10–20 kWh
Total energy (datasheet)10–20 kWh
Usable energy9–18 kWh
Max continuous discharge (CEC)5.5–11.1 kW
Full-power discharge timeabout 0.8 h at full power
Round-trip efficiency (datasheet)95%
ChemistryLithium Iron
Battery voltage range (DC)90–116 V · 135–174 V · 180–232 V

How long can it power your home?

Cali-Graf calculation

Average home load	Runtime from full
0.5 kW	≈ 18 h
1 kW	≈ 9 h
2 kW	≈ 4.5 h
3 kW	≈ 3 h
11.1 kW (full continuous power)	≈ 0.8 h

Runtime = 9 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

City	December	June
Los Angeles	2.8 kW	1.7 kW
Palmdale	2.6 kW	1.5 kW
Chula Vista	2.4 kW	1.7 kW
Huntington Beach	2.6 kW	1.8 kW
Riverside	2.7 kW	1.6 kW
Santa Clarita	2.7 kW	1.6 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).

Installation & environment

CEC Battery List · Qcells datasheet

Enclosure typeNEMA 4X, NEMA 3R
Operating temperature−25 to 60 °C

Warranty

CEC Battery List · Qcells datasheet

Warranty term10 years
Rated cycle life (spec, not warranty)6,000 cycles

Safety listings

CEC Battery List

UL 1973 (stationary battery)Certified by CSA Group
Certificate date & editionJun 29, 2022 · Ed. 2 : 2018
UL 9540A (fire propagation test)Yes
Other standards on datasheetUL 1741, IEEE 1547, UL 1699B, UL 9540A, UL 9540, UL 1973, UN 38.3, FCC

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 · Qcells datasheet

Communicationwi-fi, rs485, can
Manufacturer websiteq-cells.com
Parent companyHanwha

Installs in Southern California

building permits

Permits name it

Jul 2023 – Apr 2026

Jurisdictions so far

LA County (unincorp.) (26), Palmdale (2), San Diego County (1), Chula

Units per install

median of 16 permits

Permits over time

Installed together with

Qcells Q.VOLT

Qcells Q.PEAK DUO

Qcells (model not specified)

Qcells Q.TRON

Top ZIP codes

ZIP 917243
ZIP 935363
ZIP 913022
ZIP 935912
Other ZIP codes19

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 Q.SAVE

building permits · CSLB License Master

Lgcy Electric

Lehi · CSLB #1099095

2 installsApr 2025 – Apr 2026San Diego County, Chula Vista

K Urban Builders Inc

Los Angeles · CSLB #854389

1 installJun 2024Palmdale

Lumenexx

Walnut · CSLB #1114147

1 installMay 2025Palmdale

Compare with similar batteries

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
LG Energy Solution RESU 10H Prime	9.6–16 kWh	5 kW	Lithium Ion	—	127
EG4 Electronics WP-16/280-1AWLL	14.3 kWh	10.2 kW	Lithium Iron Phosphate	10 years	5
Tigo Energy TSB	9 kWh	3.5–5.2 kW	Lithium Iron Phosphate	11 years	2
FOXESS ECS4000-H5	25 kWh	14.4 kW	Lithium Iron Phosphate	—	1
RNG International Renogy X	20 kWh	10 kW	Lithium Iron Phosphate	10 years	1
GoodWe SECU-S Series	11.5–18.4 kWh	2.9–23 kW	Lithium Iron Phosphate	—	—

Same segment, similar capacity; each row from the same sources.

Questions & answers

How much energy does the Qcells Q.SAVE store?

9–18 kWh usable, per the manufacturer datasheet.

How long can the Q.SAVE power a home?

About 9 hours at an average 1 kW load from a full charge (9 kWh usable); higher loads shorten it.

What warranty does the Q.SAVE have?

10 years (datasheet).

Who installs the Q.SAVE in Southern California?

Building permits name it 30 times. The most active licensed installers are Lgcy Electric, K Urban Builders Inc, Lumenexx.

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
California Energy Commission — Battery List, data as of Oct 7, 2026.
Qcells — manufacturer datasheet “Q.HOME CORE Residential Energy Storage Solution H3S / H7S : DC or AC-coupled”.
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).