SAIL SOLAR 261kWh Liquid Cooling Energy Storage Outdoor ESS Cabinet with 100kw/125kw Hybrid Inverter
SAIL SOLAR BESS-I261 is an integrated liquid-cooled hybrid energy storage cabinet with 261kWh rated energy and optional 100~125kW three-phase 380V inverter.
It unifies power generation, conversion, energy storage and power consumption in one standalone outdoor cabinet, supporting PV self-consumption, peak-valley arbitrage and emergency backup power modes.
The unit can directly connect diesel generators without extra matching equipment and supports AC parallel expansion, delivering stable, safe and cost-saving power supply for C&I energy projects.
Item No :
BESS-I261Battery Type :
LiFePO4Brand :
SAIL SOLARNominal Voltage :
728~936VNominal Capacity :
261kWhWeight :
≈3TType of cooling :
Liquid coolingCycle Life :
8000 times DOD90%Protection Class :
IP54
Product Introduction
The BESS-I261 adapts perfectly to multiple application scenarios including large residential communities, shopping malls, agricultural farms and small factories.
It integrates power generation, conversion, energy storage and power consumption into one single unit. Equipped with premium hardware configurations and intelligent control software, the system supports flexible operation modes: on-site PV self-consumption, peak-valley electricity arbitrage and emergency backup power.
It fully satisfies regular daily power demands and allows parallel connection with diesel generators. In this way, it delivers steadier, safer and more cost-effective power supply for end users.

System Operation Principle of PV & Energy Storage Integrated Charging Station
This whole system connects the grid, transformer and 400V AC bus as the main power supply.
On-site photovoltaic panels generate electricity to charge the energy storage cabinet directly. The storage system supplies power to charging modules for electric cars, trucks and buses.
Users can remotely monitor and control the system via mobile phones and web terminals. It can store cheap off-peak grid electricity, ease grid load pressure during charging peak hours, realize solar self-consumption and reduce overall power cost.

Internal Structure Introduction of Integrated Outdoor Energy Storage Cabinet
The battery modules serve as the energy core, paired with composite fire detectors for real-time hazard monitoring.
Once risks are detected, the aerosol fire extinguisher automatically suppresses early fires and stops thermal runaway.
EMS acts as the central controller to realize intelligent energy dispatch. A built-in dehumidifier eliminates internal condensation to avoid damp-induced short circuits.
The liquid-cooled unit balances cell temperature steadily to slow battery degradation under heavy loads.
The high voltage control box and power distribution system undertake high-voltage interlock protection and safe power distribution. All components are pre-installed and calibrated at the factory for quick outdoor commissioning.

Our Factory
Sail Solar has developed an industry-leading intelligent manufacturing system, and constantly leads innovation in equipment and technology with the independent R&D of a top-notch technical team. With world-class production automation, intelligence, and production efficiency,Sail Solar has built an efficient intelligent factory employing new technologies such as AI, image recognition, machine learning, predictive algorithms and 5G.

Frequently Asked Questions
After-Sales Service
● " 7/24 " After-Sales Support
● 7 days a week, 24 hours a day: Ready to respond and solve problems immediately—Sail Solar's commitment to worry-free after-sales service.
● Service Email: info@sailsolaress.com
Service Process
01
Submit Service Requests
Submit your service requests at any time via email, online customer service, or mobile app.
02
Rapid Response
Our service team will immediately respond to your requests and communicate the details of the issue with you.
03
On-Site Service or Remote Support
Depending on the nature of the problem, provide on-site service or remote technical support.
04
Problem Resolution
Our goal is to completely resolve your issue within 24 hours.
05
Follow-Up
After the problem is resolved, our team will continue to follow up to ensure your satisfaction with the service results.
Leave A Message
Scan to Wechat :
Scan to WhatsApp :