BESS-Commercial-Industrial-261kWh Datasheet

MEIBESS

Battery Energy Storage Systems · meibess.com

Commercial & Industrial BESS · Three Deployment Modes

BESS-Commercial-Industrial-261kWh

261 kWh · LFP · R513A Liquid Cooling · Grid-Forming Standard
All-in-One · DC Battery-Only · Hybrid Inverter Compatible

CE IEC 62619 UL 9540A UL 1973 IP54/IP65 EU Reg 2023/1542 LVRT/HVRT Grid-Forming Std.

261kWh

Energy Capacity

LFP · 314 Ah prismatic

10K+

Cycles @ 80% DoD

EOL ≥70% SOH

≥92%

AC–AC RTE

system level

−30/+55°C

Operating Range

no derating to +35°C

5+5yr

Warranty

system + battery ext.

R513A Liquid CoolingCell ΔT ≤ 2.5°C · GWP 631 eco-refrigerant

Three Deployment ModesAll-in-One · DC-only · Hybrid Inverter

5+5 Year WarrantySystem + battery · pre-priced at order signing

LVRT / HVRT · Grid-FormingCE certified · TN/TT/IT · standard not optional

Battery Parameters

Nominal Capacity	261 kWh
Cell Chemistry	LFP — Cobalt-Free · EU Reg 2023/1542
Cell Specification	3.2 V / 314 Ah prismatic · A-grade · full traceability
DC Voltage Range	1,040 – 1,498 V (modes B & C)
Cycle Life	10,000 @ 80% DoD · 8,000 @ 95% DoD 0.5C · 25°C · EOL ≥70% SOH
Cycle Life Verification	Henley homologation · 3rd-party NDA
Design Life	25 years
Max. DoD	100% (95% recommended)
Pack IP Rating	IP65 battery module · IP65 PCS

System Parameters

Operating Temp.	−30°C to +55°C (no derating to +35°C)
Humidity	0–100% RH (non-condensing)
Max. Altitude	4,000 m (derate above 2,000 m)
Cabinet IP	IP54 standard · IP55 optional
Anti-Corrosion	C4 standard · C5 marine optional
Noise Level	≤ 75 dB(A) at 1 m
Cabinet Weight	≤ 2,800 kg
Dimensions W×D×H	1,100 × 1,400 × 2,420 mm
Communication	Modbus TCP · CAN · RS485 · IEC 60870-5-104 · IEC 61850 (opt.) · DNP3
EMS	EU Cloud EMS · AI dispatch · OTA · energy-trading ready
Fire Suppression	Pack-level Novec · cabinet-level aerosol
Certifications	UL 9540A · UL 1973 · IEC 62619 · EU Reg 2023/1542

Deployment Topologies — Specify at Order

Parameter	MODE A — All-in-One · Integrated PCS …-261kWh-100 / -110 / -125	MODE B — DC Battery-Only · Central PCS …-261kWh-DC + Central PCS	MODE C — Hybrid Inverter Compatible …-261kWh-DC + Hybrid Inverter
Power / Configuration	100 / 110 / 125 kW integrated PCS	630–2,500 kW central PCS	30 / 50 / 60 / 100 / 125 kW hybrid inverter
Max. AC Power (1 min)	120 / 132 / 150 kW	Per central PCS spec	Per inverter model
Mode A — Integrated PCS Specifications (all three sizes)
Rated AC Voltage	400 V, 3L+N+PE · 300–460 V range	Not applicable — PCS procured separately for Modes B & C
PCS Efficiency	≥99.0%	—
AC–AC RTE	≥92%	Per selected PCS/inverter
PCS Topology	3-level transformerless · liquid cooled · IP65	—
Frequency / PF	50/60 Hz · PF −1~+1 · ≥0.99 rated	—
Max. THDi	<3% at rated power	—
Response Time	≤20 ms PCS capability · <500 ms system	Per selected PCS/inverter
DC Connection Parameters (all modes share same battery DC terminals)
Battery DC Voltage	580–1,000 V (PCS input)	1,040–1,498 V (DC bus)	Per inverter BESS port spec
Typical Array Size	Single cabinet — stack up to 25 units	4–20 cabinets per central PCS	1–3 cabinets per inverter
Common Grid Features — all modes
Grid Features	LVRT / HVRT · Grid-forming standard · 4-quadrant reactive power · TN-S · TN-C · TN-C-S · TT · IT networks · CE certified
Best Application	C&I sites, EV buffers, demand-charge, solar self-use	EPC multi-cabinet MWh projects, freq. regulation	Solar+storage, off-grid, microgrid, PV retrofit

MEIBESS

BESS-Commercial-Industrial-261kWh · 261 kWh Liquid-Cooled C&I BESS · Mode A / B / C

Application Scenarios

Peak Shaving

Cut demand charges by shifting load from peak to off-peak tariff windows

Solar Self-Use

Store daytime PV surplus for evening discharge — maximise renewable ROI

Backup Power

Automatic <20 ms switchover protects critical loads from grid outages

Frequency Reg.

Fast-response ancillary services for grid operators and VPP aggregators

EV Charging

Buffer peak demand for high-power EV hubs without grid upgrade costs

Off-Grid / Microgrid

Full island-mode with automatic grid reconnection for microgrids

System Architecture — Single Line Diagram

Warranty & Service

5 YR

Product Warranty

Full system parts & labour · 48h European response · On-site technicians

+5 YR

Battery Warranty

Cell capacity guarantee · Tier-1 cell manufacturers · Pro-rated replacement

25 YR

Design Life

Dual cycle-life verified · Thermal management optimised · OTA upgradeable

24/7

Cloud Monitoring

Remote diagnostics & OTA · AI predictive maintenance · Real-time alarms

Ordering Information

Model Numbers	A: BESS-Commercial-Industrial-261kWh-100 · -110 · -125 B/C: BESS-Commercial-Industrial-261kWh-DC (+ central PCS or hybrid inverter)
Hybrid Inverter	Inverter-Hybrid 30 / 50 / 60 / 100 / 125 kW (Mode C)
Central PCS	Central PCS 630–2,500 kW (Mode B)
Cabinet Colour	RAL 7035 Light Grey standard · custom RAL on request
Warranty	5+5 Year Warranty (pre-priced at order signing)
Anti-Corrosion	C4 standard · C5 marine-grade on request
Grid Compliance	CE · LVRT/HVRT · TN/TT/IT · country codes per project
EMS	EU Cloud EMS — energy-trading ready
Lead Time	35 days ex-works from contract + deposit
MOQ	1 unit · project pricing from 3 units

Get in touch

Request a Quote or
CAPEX / ROI Analysis

sales@meibess.com

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WhatsApp: +86 158 2241 5114

Meibess · Jinan, Shandong Province, China

Tell us your site power (kW), PV capacity (if any), and target discharge hours — we'll recommend the right mode.

All specifications subject to change without prior notice. Values represent nominal performance at 25°C unless stated otherwise. Cycle life tested per Henley homologation protocol; independent third-party test reports available under NDA on request. AC–AC round-trip efficiency is system-level. Modes B and C require separate PCS or hybrid inverter procurement — consult Meibess for project-specific configuration and compatible equipment selection. © 2026 Meibess. All rights reserved.