Huntkey GreVault 5kWh to 10kWh Low Voltage All-in-one ESS for Villas and Office Areas

Huntkey GreVault 10kWh Low Voltage All-in-one ESS integrates a 5.5KW off-grid inverter, two sets of batteries (51.2V, 104Ah each), and a Battery Management System (BMS). It is suitable for installation in villas, office areas, and similar locations. The system capacity can be flexibly configured as 5.1kWh or 10.24kWh, with a cycle life of over 5 years. The ESS has an IP21 protection level and can be monitored wirelessly via Wi-Fi and GPRS. It also offers multiple operating modes to meet different user needs and can be charged via solar or grid power.

Battery Pack Parameter for Single Module
project parameter
Name 10kWh Low Voltage All-in-one ESS
Combination method 1P16S
Nominal Capacity 104Ah
Nominal Energy 5.32 kWh
Nominal Voltage 51.2V DC
Recommended Charging Voltage 56.8V or 3.55V/any cell
Internal Impedance ≤40mΩ
Standard Charge 90A
Standard Discharge 90A
Discharge Cut-off Voltage(Udo) 43.2V
Operation Temperature Range Charge:0~55℃ Discharge: -20~55℃
Storage Temperature Range -20℃~60℃
Weight 50±3kg
Dimensions(W*D*Hmm) 670*176*453
IP Grade IP54
Inverter Parameter
project parameter
Inverter power 5000W
Rated Energy 10KWh
AC input voltage 220V(50-60Hz)
AC output voltage 220V(50-60Hz)
PV Input Data
project parameter
MPPT voltage range(V) 120-500V
Number of MPPT 1
General Data
project parameter
Stackable quantity 1-3 (Each battery pack is 5.32KWh)
Operating Temperature Range (℃ 25~60℃, >45℃ Derating
Cooling Cooling
Installation Style Pile up
Output Over Current Protection Integrated
Output Over Voltage Protection Integrated
PV Input Lightning Protection Integrated
Storage Temperature Range -20℃~60℃ (Recommend(25±3℃; ≤90%RH storage moisture range)
Dimensions(W*D*Hmm) 670*176*1510
Weight 135±3kg
IP Grade IP54

Company Profile

Grevault is one of the subsidiary companies of Huntkey. We independently designs, develops, and manufactures household energy storage systems, industrial and commercial energy storage systems, photovoltaic power plants, charging piles, new energy vehicles vehicle power supply.Huntkey Grevault

Established in 2008, the R&D lab focuses on R&D design verification, new materials, experimental technology application, product function test, BMS system verification, software process verification test, high-voltage electrical stability test, etc.

Mechanical Reliability Laboratory                             Electrical Performance Lab                             Environmental test Lab

Corporation Advantage

Technical Support

Technical SupportProgram
Recommend the most suitable products to customers based on industry experience
Cooperate with customers for system testing to accelerate their R&D progress
Professional after-sales team, closed-loop improvement for possible problems
Provide the latest technological solutions when technology advances

Quality Control – Intelligent Quality Management

Intelligent quality tracing system

Collect and trace the quality data throughout the life cycle (material – production process – finished product – shipping – client side – market side – user side)
Intelligent quality data alerting and decision making
1. Open the end-to-end data interconnection and establish a big data information management platform.
2. Use big data and statistical tools to conduct intelligent analysis and early warning of quality data, and realize intelligent decision-making and preventive control of quality problems.

Intelligent quality closed-loop system

1. realize digital and intelligent closed-loop management of problems (task reminder, escalation processing)
2. Establish a case base of lessons learned (traceability, query, analysis, review).


Battery energy storage systems, also known as BESS, are innovative solutions that enable the efficient storage of electricity. These rechargeable batteries have the capability to store excess energy during periods of low demand and release it during peak demand, ensuring a balanced and reliable power supply.

Battery energy storage systems operate using advanced technologies that efficiently store and manage energy. They are equipped with control systems that monitor energy levels, optimize charging and discharging cycles, and ensure a reliable and stable power supply.

Battery Energy Storage Systems can store energy from renewable sources such as solar panels and wind turbines, ensuring a sustainable and environmentally-friendly energy storage solution.the power grid during off-peak hours when electricity demand is low, allowing for efficient utilization of excess energy and reducing strain on the grid.

The storage duration of battery energy storage systems relies on various factors, including the battery technology used, the energy capacity of the system, and the rate of energy discharge. However, they are designed to store energy for sufficient duration to meet the needs of different applications.

The use of Battery Energy Storage Systems can also contribute to a more efficient use of renewable energy sources, such as solar or wind power, by storing excess energy generated and using it when there is a lower supply.

At our factory, we have implemented a robust quality management system that guarantees the excellence of our battery energy storage systems. This system encompasses various quality control measures, such as thorough material inspections, in-process checks, and final product testing, to ensure consistent and reliable performance.

Yes , We do OEM and ODM service.we have good experience to understand what buyers like and arrange development.


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