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28.8–76.8 kWh

Home battery systemRenon Power Technology

Renon Power Technology R-SAXLxxxB12U

28.8–76.8 kWh · 12 kW · Lithium Iron Phosphate · 22 configurations

UL 9540CEC listed · Apr 21, 2026

Nameplate energy28.8–76.8 kWh
Continuous power12 kW
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

R-SAXLxxxB12U: 28.8–76.8 kWh nameplate energy; 12 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 22 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
R-SAXL028B12U {208V}	28.8 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL028B12U {240V}	28.8 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL030B12U {208V}	30.7 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL030B12U {240V}	30.7 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL038B12U {208V}	38.4 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL038B12U {240V}	38.4 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL040B12U {208V}	41 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL040B12U {240V}	41 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL048B12U {208V}	48 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL048B12U {240V}	48 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL051B12U {208V}	51.2 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL051B12U {240V}	51.2 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL057B12U {208V}	57.6 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL057B12U {240V}	57.6 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL061B12U {208V}	61.4 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL061B12U {240V}	61.4 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL067B12U {208V}	67.2 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL067B12U {240V}	67.2 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL071B12U {208V}	71.7 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL071B12U {240V}	71.7 kWh	12 kW	240 V	—	Apr 21, 2026
R-SAXL076B12U {208V}	76.8 kWh	12 kW	208 V	—	Apr 21, 2026
R-SAXL076B12U {240V}	76.8 kWh	12 kW	240 V	—	Apr 21, 2026

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)28.8–76.8 kWh
Rated power (CEC)12 kW
Max continuous discharge (CEC)12 kW
Full-power discharge timeabout 6.2 h at full power
ChemistryLithium Iron Phosphate
Grid connection208 / 240 V

Charging from solar in Southern California

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

City	December	June
Los Angeles	23.9 kW	14.1 kW
Palmdale	22 kW	12.9 kW
Chula Vista	20.4 kW	14.6 kW
Huntington Beach	22.5 kW	15.6 kW
Riverside	22.9 kW	13.6 kW
Santa Clarita	22.7 kW	13.4 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

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by TUV Rheinland of North America
Certificate date & editionAug 13, 2025 · Ed. 3 : 2023

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)No
UL 1741 SA (Rule 21)No
CSIP (IEEE 2030.5)No
JA12 declaration (Title 24)No

Compare with similar batteries

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
Sol-Ark L3 HVR	36.9–55.3 kWh	30–60 kW	Lithium Iron Phosphate	10 years	7
Sol-Ark L3 HV-xxKWH-xxK	36.9–55.3 kWh	30–60 kW	Lithium Iron Phosphate	10 years	—

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

Questions & answers

How much energy does the Renon Power Technology R-SAXLxxxB12U store?

28.8–76.8 kWh nameplate, per the California Energy Commission list.

Is the R-SAXLxxxB12U UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by tuv rheinland of north america).

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
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).