AGI&M
Technical
RelyEZ VenturePro 250｜Engineering Technical Specification
Engineering basis: VenturePro 250, model YXYK-125K/552314-M · 125 kW / marketed 250 kWh · 480 Vac, 60 Hz.
VenturePro 250 product image.
1. Product identity and use
| Item | Engineering basis |
| Manufacturer | RelyEZ Energy Storage Technology Co., Ltd. |
| Product / model | VenturePro 250 / YXYK-125K/552314-M |
| System class | Integrated liquid-cooled outdoor C&I AC BESS |
| Nominal rating | 125 kW / marketed 250 kWh |
2. Electrical and battery data
| Parameter | Technical value |
| Battery chemistry | Lithium iron phosphate (LFP) |
| Cell manufacturer / model | Xiamen Hithium / LFP71173207/314Ah |
| Cell rating | 3.2 V / 314 Ah / 1.0048 kWh |
| Pack manufacturer / model | RelyEZ Pack 52 / YXYP-52314-E |
| Pack arrangement | Five 1P52S packs in series; system configuration 1P260S |
| Pack rating | 166.4 V / 314 Ah / 52.2496 kWh each; IP65 |
| Pack charge / discharge limits | 200 A maximum; 189.8 V maximum charge; 140.4 V discharge cut-off |
| Nominal DC voltage | 832 Vdc |
| Installed pack nameplate energy | 261.248 kWh |
| Product rated energy | 250 kWh |
| Rated AC power | 125 kW |
| UL 9540 certificate maximum continuous power | 145.5 kW |
| AC output | 480 Vac, 150 A, 60 Hz |
| Off-grid output | 125 kW at 480 V / 60 Hz |
| Maximum system efficiency | 90%, excluding auxiliary power |
The five 52.2496 kWh battery-pack nameplates total 261.248 kWh. The certified product designation and marketed system rating are 250 kWh.
3. Mechanical and environmental data
| Parameter | Technical value |
| System enclosure | IP54 outdoor |
| Battery-pack enclosure | IP65 |
| Dimensions | 1,350 × 1,400 × 2,250 mm |
| Completed system mass | 3,500 kg |
| System operating ambient temperature | -30 to +55 °C |
| Pack charge temperature | 0 to +55 °C |
| Pack discharge temperature | -20 to +55 °C |
| Cooling | Liquid cooling |
| Fire suppression | Aerosol |
4. Integrated product boundary
The integrated cabinet includes:
- RelyEZ Rack 250 with five liquid-cooled battery packs
- High-voltage control box and BMS
- 125 kW PCS
- Liquid-cooling system
- Auxiliary power system
- Aerosol fire-suppression system
- Local control/communication equipment
- Internal power and communication wiring
5. External project scope
The following equipment and work are external to the cabinet:
- Transformer, site switchgear, external disconnect and protection
- Revenue-grade meter and CTs
- Site EMS/SCADA, zero-export controls, transfer controls and microgrid integration
- External fire-alarm panel and AHJ-required site fire systems
- Foundation, drainage, clearances, grounding and external cables
- Logistics, unloading, rigging, installation and commissioning
- Permitting, utility coordination, HMA and EOR services
6. Controls and communications
- Physical interfaces: CAN, RS-485 and Ethernet
- Protocols stated: CAN, Modbus TCP and Modbus RTU
- Off-grid output requires a complete site isolation, grounding, source-coordination and load-management design
7. Certification and compliance evidence
| Level | Standard / evidence | Certificate or report | Issuer / date |
| Complete system | ANSI/CAN/UL 9540:2023, Third Edition | Certificate SGSNA/24/SH/00273; listing report SHES240500994931 | SGS; 2024-08-12 |
| Complete system | ANSI/CAN/UL 9540A:2019 unit-level thermal-runaway test | CQES240600052701 | SGS-CEC; 2024-07-19 |
| Complete system | ANSI C63.4 and 47 CFR Part 15B electromagnetic compatibility verification | Verification SHEM240900630001BAC; report SHEM240900630001 | SGS-CSTC; 2024-10-09 |
| Transport | UN Manual of Tests and Criteria, Rev.7 Amend.1, Section 38.3 | RZUN2024-4676-M1; summary RZUN2024-4676-M1-TS | CVC; 2024-10-30 |
| Battery pack | ANSI/CAN/UL 1973, Third Edition | SGSNA/24/CQ/00003U; model YXYP-52314-E | SGS; 2024-03-05 |
| Battery cell | ANSI/CAN/UL 1973:2022 | CU 72302476 01; model LFP71173207/314Ah | TÜV Rheinland; 2023-11-01 |
| Battery cell | IEC 62619:2022 | JPTUV-152897; report CN23YUR9 001 | TÜV Rheinland; 2023-10-30 |
8. UL 9540A unit-level results
| Observed parameter | Reported result for YXYK-125K/552314-M |
| External flaming | No external flaming observed |
| Flame extension | No flame extension observed |
| Flying debris | No flying debris observed |
| Explosion | No explosion observed |
| Thermal-runaway containment | Contained by the unit design |
| Maximum target-module surface temperature | 39.8 °C |
| Maximum wall-surface temperature rise | 7.3 °C |
| Heat flux at center of egress | 0.057 kW/m² |
9. Regional model certification boundary
| Model | Electrical configuration | Model-specific evidence |
| YXYK-125K/552314-M | 480 Vac, 60 Hz | ANSI/CAN/UL 9540 system certificate, UL 9540A unit-level report, FCC Part 15B verification and UN 38.3 transport evidence listed above |
| YXYK-125K/552314-L | 230/400 Vac, 50 Hz | IECEE CB IEC 62477-1 certificate SG SGS-00437/A1; EN 62477-1 LVD verification LVD CQES2410000941BA; EN IEC 61000-6 EMC verification SHEM240900630101BAC |
Prepared by AGI&M ASSETS INC. · Engineering Technical Specification · Version 1.1