marwell solar cabinet bess 256kwh outdoor battery cabinet
Commercial & Industrial

Cabinet Type Energy Storage
96–256kWh

An all-in-one outdoor battery cabinet with 314Ah LiFePO4 packs, air-cooled thermal management, IP55 protection and built-in aerosol fire fighting — ready to pair with hybrid inverters up to 50kW for C&I solar storage, peak shaving and backup power.

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96–256 kWhNominal Capacity
307.2–819.2 VNominal Voltage
> 6000Cycles @ 80% DoD, 0.5C/0.5C
IP55Outdoor Protection Class
Overview

Product Features

Five cabinet models from 96 to 256kWh for C&I photovoltaic storage, peak shaving, backup power and microgrid applications.

All-in-One Cabinet Design

Battery packs, BMS, fire protection and thermal management integrated in a single outdoor cabinet — fast installation and commissioning.

Aerosol Fire Protection

Built-in aerosol fire-fighting system inside an IP55-rated enclosure keeps the battery room safe in harsh outdoor environments.

Air-Cooled Thermal Management

Forced air cooling keeps every 314Ah pack in its optimal temperature window, from -10°C to +50°C working temperature.

Long Cycle Life

314Ah LiFePO4 cells deliver more than 6000 cycles at 80% DoD (0.5C/0.5C) with a design life of 10 years and above.

Flexible Capacity Options

Five models — 96, 128, 209, 225 and 256kWh — built from 51.2V 314Ah packs in series, matching projects from shops to factories.

Smart Monitoring

RS485/CAN battery communication plus Ethernet/Modbus/TCP-IP on the inverter side for remote monitoring and EMS integration.

Models

Five Cabinet Models — 96 to 256kWh

Swipe through the full cabinet range. Every model shares the same 314Ah pack platform and IP55 outdoor enclosure.

marwell solar cabinet bess 96kwh 307.2v
MW-96KWH-307.2V — 96 kWh · 307.2V · 6 × 51.2V 314Ah packs
marwell solar cabinet bess 128kwh 409.6v
MW-128KWH-409.6V — 128 kWh · 409.6V · 8 × 51.2V 314Ah packs
marwell solar cabinet bess 209kwh 665.6v
MW-209KWH-665.6V — 209 kWh · 665.6V · 13 × 51.2V 314Ah packs
marwell solar cabinet bess 225kwh 716.8v
MW-225KWH-716.8V — 225 kWh · 716.8V · 14 × 51.2V 314Ah packs
marwell solar cabinet bess 256kwh 819.2v
MW-256KWH-819.2V — 256 kWh · 819.2V · 16 × 51.2V 314Ah packs



Anatomy

Inside the Cabinet

marwell solar cabinet bess anatomy: battery compartment, air cooling and hv control box
  1. 1HV Control & BMS CompartmentSide-mounted high-voltage control box with master BMS and protection devices.
  2. 2Air-Cooling IntakeFiltered intake windows feed the forced air-cooling system across all packs.
  3. 3Cooling FanTemperature-controlled fans keep the 314Ah cells in their optimal window.
  4. 4Battery Compartment51.2V 314Ah LiFePO4 packs in series — from 6 packs (96kWh) to 16 packs (256kWh).
  5. 5Reinforced Base PlinthForklift-friendly base for transport and outdoor ground installation.
  6. 6Inverter ConnectionPre-wired DC and communication cables to the hybrid inverter, up to 50kW.
Specifications

Technical Specifications

marwell solar cabinet bess 96kwh outdoor cabinet detail

IP55 outdoor enclosure with aerosol fire protection and air-cooled thermal management — one platform from 96 to 256kWh.

Battery Specifications
Battery Pack 51.2V – 314Ah (in series)
Cell Capacity 314 Ah
Recommend Charge/Discharge Current 100 A
Max. Charge/Discharge Current 140 A
Communication RS485 / CAN
Working Temperature -10°C to +50°C
Transport / Storage Temperature -20°C to +60°C
Design Life 10 years+
Cycle Life > 6000 cycles (0.5C/0.5C, 80% DoD)
Cabinet
Cooling Method Air-cooled
Protection Class IP55
Fire Fighting Type Aerosol
Inverter Matching
Inverter Matching Max 50 kW
Communication Ethernet / Modbus / TCP-IP
Inverter Type Deye / Solis / Megarevo / Other
Model MW-96KWH-307.2V MW-128KWH-409.6V MW-209KWH-665.6V MW-225KWH-716.8V MW-256KWH-819.2V
Battery Pack Model MW314-96KWH MW314-128KWH MW314-209KWH MW314-225KWH MW314-256KWH
High-Voltage Pack HV96K HV128K HV209K HV225K HV256K
Nominal Voltage 307.2 V 409.6 V 665.6 V 716.8 V 819.2 V
Nominal Capacity 96 kWh 128 kWh 209 kWh 225 kWh 256 kWh
Battery Configuration 51.2V-314Ah × 6 51.2V-314Ah × 8 51.2V-314Ah × 13 51.2V-314Ah × 14 51.2V-314Ah × 16
Cabinet Size (mm) 800×1080×2260 1290×1080×1740 1290×1080×2260 1290×1080×2260 2510×1300×1250
Weight w/o Inverter 1140 kg 1700 kg 2140 kg 2260 kg 2660 kg

Specifications subject to change without notice. Detailed inverter specifications refer to the inverter manual.

Applications

Application Scenarios

marwell solar cabinet bess for photovoltaic energy storage

Photovoltaic Energy Storage

Store daytime solar generation for evening self-consumption in C&I rooftop and ground-mount PV plants.

marwell solar cabinet bess for household electricity

Household Electricity

Whole-building backup and solar self-consumption for villas, estates and small communities.

marwell solar cabinet bess for fire and security systems

Fire & Security Systems

Reserved capacity keeps fire alarm, security and monitoring systems running through any outage.

marwell solar cabinet bess for industrial electricity consumption

Industrial Electricity

Peak shaving and backup for factories, warehouses and commercial parks up to 50kW per cabinet.

Compatibility

Compatible Inverter Manufacturers

Ethernet / Modbus / TCP-IP communication with leading hybrid inverter brands, up to 50kW per cabinet.

DeyeSolisMegarevoGrowattATESSGoodWe
Global Projects

Global Projects

Cabinet Type installations across Southeast Asia — from single 96kWh cabinets to multi-cabinet factory systems.

marwell solar cabinet bess rooftop project video in Malaysia

Malaysia Rooftop Solar + Cabinet Project ▶ VIDEO

Time: 2025Location: MalaysiaCapacity: 96 kWh (MW-96KWH)

A rooftop PV array paired with an outdoor battery cabinet — commissioned and running stably as the building's emergency power supply. Watch the project video.

marwell solar cabinet bess project video in Vientiane Laos

Vientiane Hybrid Solar Storage Project ▶ VIDEO

Time: 2024Location: Vientiane, LaosCapacity: 209 kWh (MW-209KWH)

A 209kWh cabinet with wall-mounted hybrid inverters in a dedicated plant room — watch the on-site commissioning video.

marwell solar cabinet bess project in Ho Chi Minh City Vietnam

Ho Chi Minh City C&I Solar Storage Project

Time: 2026Location: Ho Chi Minh City, VietnamCapacity: 96 kWh (MW-96KWH)

A 96kWh cabinet with wall-mounted hybrid inverters stores rooftop PV for a commercial facility in Ho Chi Minh City.

marwell solar cabinet bess project in Chonburi Thailand

Chonburi EV-Charging Hub Project

Time: 2025Location: Chonburi, ThailandCapacity: 256 kWh (MW-256KWH)

A 256kWh cabinet under a solar carport buffers DC fast chargers, avoiding a costly grid-connection upgrade.

marwell solar cabinet bess project in Cebu Philippines

Cebu Factory Backup Project

Time: 2024Location: Cebu, PhilippinesCapacity: 209 kWh (MW-209KWH)

A 209kWh outdoor cabinet carries critical production loads through the island grid's frequent brownouts.

marwell solar cabinet bess project in Kuala Lumpur Malaysia

Kuala Lumpur Plant Peak-Shaving Project

Time: 2025Location: Kuala Lumpur, MalaysiaCapacity: 450 kWh (2 × MW-225KWH)

Two 225kWh cabinets on a raised platform shave evening peaks for a manufacturing plant near Kuala Lumpur.

Certifications

Standards & Certifications

CEBattery System
IECBattery Safety
ULBattery Safety
UN 38.3Transport
MSDSBattery Pack

Download the Datasheet

Get the full Cabinet Type 96–256kWh datasheet with all five models, or send us your project requirements — our engineers will reply within 24 hours.

Download Datasheet ↓







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