9–18 kWh

Battery moduleSolaX Power

SolaX Power ULTRA-THIN DESIGN

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

UL 1973CEC listed · Feb 1, 2023

Usable energy9–18 kWh
Continuous power5.5–11.1 kW
Warranty12 years
ChemistryLithium Iron

Overview

CEC Battery List

ULTRA-THIN DESIGN: 9–18 kWh usable energy; 5.5–11.1 kW continuous; lithium iron; 12 years warranty.

Models & configurations

CEC Battery List · 3 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
T-BAT H 10.0	10 kWh	—	—	—	Feb 1, 2023
T-BAT H 15.0	15 kWh	—	—	—	Feb 1, 2023
T-BAT H 20.0	20 kWh	—	—	—	Feb 1, 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
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 · SolaX Power datasheet

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

Warranty

CEC Battery List · SolaX Power datasheet

Warranty term12 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 & editionNov 22, 2024 · Ed. 3 : 2022
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.

California grid & code compliance

CEC Battery List

JA12 declaration (Title 24)Yes
JA12 control strategiesA1-HYB-7.6K-G2 - Basic, TOU, Advance DR A1-HYB-6K-G2- Basic, TOU, Advance DR A1-HYB-5K-G2 - Basic, TOU, Advance DR A1-HYB-3.8K-G2 - Basic, TOU, Advance DR
Last CEC updateApr 1, 2026

Full specifications

CEC Battery List · SolaX Power datasheet

Communicationwi-fi, rs485, cellular, can
Manufacturer websitesolaxpower.com

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
Qcells Q.SAVE	9–18 kWh	5.5–11.1 kW	Lithium Iron	10 years	30
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

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

Questions & answers

How much energy does the SolaX Power ULTRA-THIN DESIGN store?

9–18 kWh usable, per the manufacturer datasheet.

How long can the ULTRA-THIN DESIGN 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 ULTRA-THIN DESIGN have?

12 years (datasheet).

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.
SolaX Power — manufacturer datasheet “ULTRA-THIN DESIGN A1-ESS-G2 Global: +86 571-56260008”.
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).