ESS-GRID FLEXIO SERIES
500kW / 1MWh Smart Microgrid Solar Battery Storage System
BSLBATT ESS-GRID FlexiO is an air-cooled solar battery storage system featuring a split PCS and battery cabinet with 1+N scalability. It integrates solar photovoltaic, diesel power generation, grid, and utility power, making it ideal for microgrids, rural and remote areas, large-scale manufacturing, farms, and electric vehicle charging stations. BSLBATT FlexiO series provides a highly integrated solar battery storage system, designed to enhance performance and reduce costs for stationary commercial and industrial energy storage applications.
Main Features
- PV+ ENERGY STORAGE + DIESEL POWER
- HIGH RELIABILITY, HIGH LIFESPAN
- MORE FLEXIBLE, HIGH SCALABILITY
- HIGH SECURITY, MULTI-LAYER PROTECTION
- ADAPTIVE CONTROL
- 3D VISUALIZATION TECHNOLOGY
Why choose lithium batteries from BSLBATT®️?
A+ Cell Composition
Cooperating with the world’s top three LFP Cell manufacturers, the battery cell features ultra-safe, explosion-proof, no leakage, and ultra-long cycle life
Smart BMS
The smart BMS can monitor battery operating status in real time and integrates a variety of safety features, including overcharge and deep discharge protection, voltage and temperature observation, overcurrent protection, cell monitoring and balancing, and overheating protection.
APP & Cloud Platform
BSLBATT APP & Cloud Platform offer dynamic power flow and generation reports with real-time monitoring, comprehensive visualization, multi-terminal compatibility, remote OTA upgrades, integrated after-sales service, and robust backup functions with data encryption to reduce maintenance costs and enhance security.
Most professional pre-sale and after-sale service
BSLBATT technical team has more than ten years of experience in the lithium battery industry, providing you with the most professional pre-sales as well as after-sales service. In addition, BSLBATT has branches in the United States, the Netherlands, Japan, Mexico and other places, and strives to develop a comprehensive global layout.
| Picture | Model | ESS-GRID P500E |
|---|---|---|
 | AC (grid-connected) | |
| PCS Rated AC Power | 500kW | |
| PCS Maximum AC Power | 550kW | |
| PCS Rated AC Current | 720A | |
| PCS Maximum AC Current | 790A | |
| PCS Rated AC Voltage | 400V，3W+PE/3W+N+PE | |
| PCS rated AC frequency | 50/60±5Hz | |
| Total harmonic distortion of current THDI | <3% (rated power) | |
| Power factor | -1 overrun ~ +1 hysteresis | |
| Voltage total harmonic distortion rate THDU | <3% (linear load) | |
| AC (off-grid load side) | ||
| Load Voltage Rating | 400Vac，3W+PE/3W+N+PE | |
| Load Voltage Frequency | 50/60Hz | |
| Overload capacity | 110% long term operation; 120% 1 minute | |
| Off-grid output THDu | ≤ 2% (linear load) | |
| DC Side | ||
| PCS DC side voltage range | 625~950V (three-phase three-wire) / 670~950V (three-phase four-wire) | |
| PCS DC side maximum current | 880A | |
| System Parameters | ||
| Protection class | IP54 | |
| Protection grade | I | |
| Isolation mode | Transformer isolation: 500kVA | |
| Self-consumption | <100W (without transformer) | |
| Display | Touch LCD touch screen | |
| Relative humidity | 0~95% (non-condensing) | |
| Noise level | Less than 78dB | |
| Ambient Temperature | -25℃~60℃ (Derating above 45℃) | |
| Cooling method | Intelligent air cooling | |
| Altitude | 2000m (over 2000m derating) | |
| BMS Communication | CAN | |
| EMS Communication | Ethernet / 485 | |
| Dimension (W*D*H) | 1450*1000*2300mm | |
| Weight (with battery approx.) | 1700kg | |
| Picture | Model | ESS-GRID P500L |
 | Photovoltaic (DC/DC) Power Rating | 500kW |
| PV (Low Voltage Side) DC Voltage Range | 312V~500V | |
| PV Maximum DC Current | 1600A | |
| Number of PV MPPT circuits | 10 | |
| Protection Rating | IP54 | |
| Protection Rating | I | |
| Display | Touch LCD touch screen | |
| Relative Humidity | 0~95% (non-condensing) | |
| Noise level | Less than 78dB | |
| Ambient Temperature | -25℃~60℃ (Derating above 45℃) | |
| Cooling Method | Intelligent air cooling | |
| EMS Communication | Ethernet / 485 | |
| Dimension (W*D*H) | 1300*1000*2300mm | |
| Weight | 500kg | |
| Picture | Model number | ESS-GRID 241C |
 | Rated Battery Capacity | 241kWh |
| Rated System Voltage | 768V | |
| System Voltage Range | 672V~852V | |
| Cell Capacity | 314Ah | |
| Battery Type | LiFePO4 battery（LFP） | |
| Battery series-parallel connection | 1P*16S*15S | |
| Maximum charge/discharge current | 157A | |
| Protection Grade | IP54 | |
| Protection Grade | I | |
| Cooling and heating air conditioning | 3kW | |
| Noise level | Less than 78dB | |
| Cooling Method | Intelligent air-cooling | |
| BMS Communication | CAN | |
| Dimension (W*D*H) | 1150*1100*2300mm | |
| Weight (with battery approx.) | 1800kg | |
| The system uses 5 clusters of 241kWh batteries for a total of 1.205MWh | ||
