YMD-400/250
250kW / 400kWh Mobile Energy Storage System
A high-capacity mobile energy-storage system integrating battery storage, dual PCS, STS, EMS, BMS, safety and fast-charging functions.
Mobile Energy StoragePower Supply
Portable Power for EV Charging & Grid Support
Reliable Power On Site. Anytime. Anywhere.
Product overview
Built around the application.
The YMD-400/250 is YAHUA’s high-capacity mobile energy-storage platform for unstable-grid regions, emergency supply, field power and mobile charging. It integrates LiFePO₄ storage, dual 125 kW PCS, a 300 kVA STS, EMS, BMS, air-cooled temperature control, aerosol firefighting and DC fast charging in one transportable enclosure. Grid-connected and off-grid operation, photovoltaic input, reverse-power protection and engineered multi-unit parallel operation support temporary, emergency and renewable-energy deployments. Final engineering should confirm the load profile, transfer requirements, site interfaces, parallel controls, towing configuration and local electrical standards.
Five operating advantages
Built to move energy where it is needed.
Select each capability to review how the 250kW / 400kWh platform supports temporary, emergency and off-grid power.
Capability 01
Lifecycle cost control
Integrated storage can reduce generator runtime and simplify temporary-power logistics when the system is configured for the actual duty cycle.
250 kW / 401.4 kWh stored energy
Capability 02
Rapid deployment
The mobile enclosure moves 250 kW AC output and DC fast-charging capability close to the load without permanent civil works.
3,800 kg enclosureCapability 03
Intelligent energy management
Dual 125 kW PCS, a 300 kVA STS, EMS, BMS and GPS Cloud monitoring coordinate connected and independent operation.
RS485/CAN · GPS Cloud
Capability 04
Rugged outdoor design
A steel IP65 enclosure, air-cooled temperature control, aerosol firefighting and defined storage ranges support outdoor deployment.
Steel casing · IP65
Capability 05
PV input and off-grid supply
Photovoltaic input, reverse-power protection and multi-unit parallel capability support engineered off-grid and grid-support applications.
PV input · off-grid supplySystem architecture
One mobile platform. Multiple energy paths.
The supplied configuration combines grid and photovoltaic input, LiFePO₄ storage, AC and DC output, and remote monitoring in one transportable enclosure.
250 kW conversion 401.4 kWh stored energy
LiFePO₄ storage with dual 125 kW PCS, 300 kVA STS, EMS, BMS and connected monitoring.
Product highlights
Four deployment qualities at a glance.
The product visual summarizes the platform's stable output, low-noise operation, outdoor-ready enclosure and mobile field setup.
Product parameters
Model-specific specifications.
Compare the model-specific electrical, mechanical and operating parameters. Final configuration remains subject to application engineering.
Electrical and energy
- Rated power
- 250 kW
- Nominal energy
- 400 kWh
- Stored energy
- 401.4 kWh
- Battery rated energy
- 400 kWh at RT, 0.5C, BOL
- Grid type
- 3L+N+PE
- Rated AC voltage
- AC 400V (-15% to +15%)
- DC voltage range
- 200–950 Vdc
- Maximum DC power
- 250 kW
- Maximum efficiency
- 97%
- Rated frequency
- 50 Hz
- Grid frequency range
- 45–55 Hz
- Overload capacity
- 110% continuous
Battery and charging
- Battery type
- LiFePO₄ lithium battery
- Cycle life
- More than 5,000 cycles
- Charge/discharge rate
- 1C
- Charging time
- 1–1.5 hours
- Storage temperature — 1 month
- -20°C to 45°C (-4°F to 113°F)
- Storage temperature — 1 year
- 0°C to 35°C (32°F to 95°F)
Enclosure, control and safety
- Casing material
- Steel
- Ingress protection
- IP65
- Communication
- RS485/CAN
- Monitoring
- GPS Cloud
- Weight
- About 3,800 kg
- Dimensions (L×W×H)
- 3,350 × 1,780 × 1,550 mm
- Noise level
- ≤60 dB
- Fire protection
- Aerosol firefighting
Applications
Applications of YAHUA outdoor energy storage systems.
Designed for outdoor and off-grid operations including construction, events, agricultural water systems, emergency support, high-altitude projects and rental service.
Construction and high-altitude operations
Temporary high-power supply for construction, remote worksites and demanding outdoor locations.
Agriculture, irrigation and ranch water systems
Off-grid energy support for farming, irrigation and ranch water infrastructure.
Grid, event and rental service
Deployable supply for grid support, large outdoor events, temporary facilities and equipment rental fleets.
Emergency power and EV charging
Rapid-response backup energy and DC fast-charging support where fixed supply is unavailable.
Application photography
Eight field cases in use.
Every supplied case is shown: rural emergency power, farm supply, EV charging, residential backup, solar off-grid service, grid support and two mobile service vehicles.
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