lunar battery ul 9540
Certificate of Compliance
Certificate:
80257868
Master Contract:
302773
Project:
80285268
Date Issued:
2026-02-17
Issued to:
Issued by:
Lunar Energy, Inc
755 Ravendale Drive
Mountain View, California
94043
United States
Issued by:
Jason Myers, Energy Storage Certifier II
Attention: Lauren Del Gallego
The products listed below are eligible to bear the CSA Mark shown with adjacent indicator 'US'
PRODUCTS
Class 3701 88 BATTERIES - Electrical Energy Storage System - Certified to US Standard
Li-ion Battery Energy Storage System (ESS), AC ESS:
Model(s)
L2-ESS-10KWH, L2-ESS-15KWH, L2-ESS-20KWH *
*The L2-ESS-20KWH AC-ESS is evaluated for use with up to two (2) DC Expansion Units, Model LE-DC-UNIT. When used with the expansion units, the total system capacity may increase up to 30 kWh.
The AC energy storage system will consist of one Lunar inverter, a range of 2 to 4 modules with 2 optional expansion units (LE-DC UNIT), and the associated trunk harness for the system.
Refer to following table for components of Pre-Engineered Matched Component ESS:
| Model | ACESS Models:L2-ESS-10KWH,L2-ESS-15KWH,L2-ESS-20KWH |
|---|---|
| Inverter(Each system will contain one Inverter) | Model:10-005025(Quantity:1) |
| DC Energy Storage System | Model:LE-DC-UNIT,Quantity:2to4moduleswith2optionalexpansionunits |
Electrical Ratings:
Refer to below table for the ratings of the Battery Energy Storage System:
| AC ESS System Ratings | |||||
|---|---|---|---|---|---|
| Rating/Model | L2-ESS-10KWH | L2-ESS-15KWH | L2-ESS-20KWH | ||
| Energy storage capacity (maximum)(kWh) | 10 | 15 | 20 | 25 | 30 |
| Power output(maximum continuous)for each power port(kW)(Full Sun/No Sun) | 9.6/5 | 9.6/7.5 | 9.6 | ||
| Output current(maximum continuous)(Amps) | 40 | ||||
| Output voltage(minimum and maximum)for each power port(Volts)(AC) | 210-264 | ||||
| Output voltage(Nominal)(Volts)(AC) | 120/240 Split Phase | ||||
| Input/Output current(DC for PV)(Amps DC) | 37.5(PV),30(Battery) | ||||
| Input Power(PV)(Maximum)(kW DC) | 15 | ||||
| Frequency(Hz) | 60 | ||||
| Input short-circuit current rating(SCCR)(kA) | 10 | ||||
| Maximum overcurrent protective device rating(Amps) | 50 | ||||
| Output available fault current and time duration(A and Mill-Second) | 952/3 | ||||
| Weight of system lbs(kg) | 305(139) | 421(191) | 540(245) | 659(299) | 778(354) |
| Overall dimension of the system(HxWxD)in(mm) | 34.8”x24.4”x13.5”(884mmx619mmx344mm) | 45.5”x24.4”x13.5”(1156mmx619mmx344mm) | 56.1”x24.4”x13.5”(1425mmx344mmx619mm) | 66.8”x24.4”x13.5”(1696x619x344mm) | 77.4”x24.4”x13.5”(1967x619x344mm) |
|---|
| Other Rating | |
|---|---|
| ESS Identification | AC ESS |
| ESS Type | Multi-part ESS |
| Special environmental ratings and limitations as applicable | Type 3R |
| Duty cycle | No duty cycle |
| Operating ambient temperature(℃) | 4°F to 122°F(-20°C to 50°C)Performance may be de-rated at operating temperatures below0°C(32°F)or greater than45°C(113°F) |
| Maximum altitude ft(m) | Up to9843(3000) |
| Pollution degree | 3 |
| Overvoltage Category | III |
| Technology utilized in system | Lithium Iron Phosphate(LFP) |
| Minimum separation distances(mm) | From otherESS/BatterySystem:6”From exposures(e.g.combustibles,structures):6”From openings(e.g.windows,doors,HVACinlets or other operableopenings):6” |
| Locations | Outdoor or Indoor,ResidentialNon-habitable spaces |
| Mounting | Floor orWall mounted |
| ArcFlashWarningLabelDetail(Note:CheckNFPA70Etoverifywhatminimummarkingdetailneeded) | |
| NotrequiredforResidentialinstallations |
APPLICABLE REQUIREMENTS
| Standards Used | Description | |
|---|---|---|
| QD-1397 Rev 2019-04-30 | ©2026 CSA Group. All rights reserved. | Page 3 |
| Standards Used | Description |
|---|---|
| ANSI/CAN/UL 9540:2023-Third Edition | UL Standard for Safety Energy Storage Systems and Equipment |
Conditions Of Acceptability
- The installation was not evaluated. The ESS shall be installed in accordance with applicable local installation code NFPA 70, IEEE C2, ICC IFC, ICC IRC, NRC NFC, NFPA 1, NFPA 855 and etc. as applicable.
- The altitude shall be less than 3000m
- Ratings for salt-fog were not declared; additional evaluation shall be considered for systems to be installed in marine applications.
- The system was not evaluated for High Seismic activity locations; additional evaluation shall be considered to be installed in High seismic locations.
- The maximum number of DC ESS Units is 2 to 4 with 2 optional expansion units (LE-DC-UNIT) per inverter.
- The BESS is only to be installed in Residential locations in outdoor or indoor non-habitable spaces.
- Overvoltage Category (OVC):2
- Pollution Degree(PD):3
Markings
See Report
Supplement to Certificate of Compliance
Certificate: 80257868
Master Contract: 302773
The products listed, including the latest revision described below are eligible to be marked in accordance with the referenced Certificate.
Product Certification History
| Project | Date | Description |
|---|---|---|
| 80285268 | 2026-02-17 | Update Lunar Energy's UL 9540 Report 80257868 to include alternative model designations: •L2-ESS-25KWH - change to L2-ESS-20KWH which includes(1)LE-DC-UNIT (expansion unit) •L2-ESS-30KWH - change to L2-ESS-20KWH which includes(2)LE-DC-UNIT (expansion unit). Includes updates to labels and documentation. Deliverable(s):Model Certification or Findings Letter |
| 80257868 | 2025-12-19 | Evaluation of Lunar Energy Storage System to CAN/UL 9540-Energy Storage Systems and Equipment System Specifications: Capacity:5-30kWh Dimensions:1967x619x344mm Mass:354kg Configuration2s3p Input Voltage120/240Vac Output Voltage120/240Vac Max Output Current:40A DC Input Voltage max:380-450Vdc ESS Operating Temperature Range:-20C to 50C Deliverable(s):Model Certification or Findings Letter |