Ess Customized Bess 1mwh 2mwh 5mwh Solar Battery Energy Storage 20FT 40FT Container System

Name: Ess Customized Bess 1mwh 2mwh 5mwh Solar Battery Energy Storage 20FT 40FT Container System
Brand: Sunsky Co., Ltd
SKU: 1985217941

Anhui, ChinaSunsky Co., Ltd

US$0.16-0.28

100,000 Watt

Sample price:US$46500.00/set.Request sample

Product profile

Customization

Available

Container Size

6058*2438*2591mm

Weight

<30mt

Model NO.

SUN1MW-ESS

Nominal Voltage

208/220/400/480V 3phase

Warranty

10 Years

Nominal Capacity

500kwh, 1mwh,2mwh,3mwh (Customzable)

Cycle Life

8000 Times and up Lithium Battery

Nominal Grid Frequency

50Hz/60Hz

Certification

ISO, CB, CE, TUV/Un38.3/En50549

Product Name

Air/Liquid Cooling Container Energy Storage System

Dod

90%

Degree of Protection

IP65

Battery Type

Liquid Cooling,Lithium Ion, LiFePO4 Battery

Install

Ground/Carport/Rooftop

Technical Support

Complete Professional Technical Guidance

Application

Industrial/Commercial/Factory/Hospital

BMS Communication Interface

Ethernet, Can, RS485

Container

for Outdoor Installation

Cooling Concept of DC Hatch

HAVC

Battery

Air/Liquid Cooling

Local Monitoring EMS

Yes

Isolated Transformer

Included

Transport Package

Container

Specification

20FT/40HQ

Trademark

SUNSKY

Origin

China

HS Code

8504403090

Production Capacity

300sets/Day

Key features

Customizable Capacity: Nominal capacity available in 500kWh, 1MWh, 2MWh, 3MWh, and fully customizable.

10-Year Warranty: Comprehensive 10-year warranty coverage for the system.

Flexible Deployment: Suitable for ground, carport, and rooftop installation in industrial and commercial settings.

High Energy Density: 20ft and 40ft containers integrate PACK, EMS, BMS, and HVAC into one unit.

Multiple Cooling Options: Available in Air or Liquid Cooling configurations for the energy storage system.

Comprehensive Certifications: Certified with ISO, CB, CE, TUV, UN38.3, and EN50549 standards.

Company profile

High Repeat Buyers ChoiceFast DeliveryFull CustomizationImporters and Exporters

Sunsky Co., Ltd

Anhui, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤3.90h

AI-Powered supplier vetting

SummaryHefei Sunskypv Co., Ltd. is a China-based trading company established in 2022, offering solar panels, inverters, batteries, combiner boxes, and mounting systems. It reports broad customization capability, documented finished-product inspection instructions, export activity, and stated annual output across lithium batteries, solar systems, and solar panels. However, the supplier has only four employees and a 78.28 m² manufacturing plant, while its service procedures lack written records. No SDK is available, overseas service infrastructure is absent, and environmental and fire-drill status are unknown. An SGS audit was conducted from 2025-02-28 to 2026-02-27, but the provided audit result value is not interpretable as a certification conclusion.

Supplier typeThe supplier is explicitly identified as a trading company and a limited company based in Hefei, Anhui, China. Its listed product scope covers solar panels, inverters, batteries, combiner boxes, and mounting systems, indicating a renewable-energy equipment trading and supply business.

After-Sales capabilityThe supplier has procedures for corrective and preventive actions and customer complaint handling, but no written records support their implementation. It also lacks overseas showrooms, overseas agents or branches, and offline trade-show participation, limiting demonstrated overseas service coverage.

Production capacityThe supplier reports annual output of 800,000 lithium batteries, 100,000 solar systems, and 100,000,000 solar panels, with stated order fulfillment within 15 working days in both peak and off-peak periods. Against this, it is classified as a trading company with four employees and a 78.28 m² plant, so the records support reported supply capacity but do not clearly verify owned manufacturing capability.

Customization capabilityThe supplier explicitly offers customization from samples and designs, minor and full customization, and flexible customization. It also states that finished-product inspection instructions are available and uniformly followed, supporting both customization scope and a defined inspection method.

Product Q&A

Q:How does DC coupling optimize the use of renewable energy in a large-scale system?

It allows for more captured solar energy to be stored directly, with minimal losses. This optimization ensures that a greater portion of the generated solar power is used either on-site or dispatched to the grid, enhancing the sustainability of the large scale solar battery storage project.

Q:What role does the Power Conversion System (PCS) play?

The PCS is the core component. It functions as a high-power, bidirectional inverter that converts DC from the solar and batteries to AC for use. It replaces the need for separate solar and battery inverters, streamlining the large scale solar battery storage infrastructure.

Q:What are the primary advantages of a DC-coupled system for on/off-grid large-scale projects?

Key advantages include higher overall system efficiency, a simplified system layout with fewer components, reduced balance of system (BOS) costs, and seamless integration for both on-grid and off-grid large scale solar battery storage systems.

Q:Why is DC coupling considered more efficient for large scale solar battery storage systems?

DC coupling is more efficient because it avoids multiple DC-AC-DC conversion steps. Solar energy can directly charge the batteries in DC form, reducing energy losses. This higher efficiency is crucial for maximizing ROI in large scale solar battery storage applications.

Q:What is DC coupling in the context of large scale solar battery storage?

DC coupling is a system architecture where solar panels and batteries are connected on the same Direct Current (DC) bus before being converted to Alternating Current (AC) by a single, centralized inverter. This is a highly efficient solution for large scale solar battery storage projects.