Haven Deer 

clean energy,within reach

OEM / ODM Solar Storage Manufacturer

About Haven Deer

Reliable Solar Storage Solutions for Global Markets

Haven Deer is a solar energy storage brand developed by Huzhou Haven Deer Technology Co., Ltd., a technology-driven company based in Huzhou, Zhejiang, China.
We specialize in residential and commercial solar storage solutions, including LiFePO4 batteries, all-in-one ESS systems, and hybrid solar inverters. Through our strong R&D capabilities and manufacturing partnerships, we deliver reliable energy storage products to customers worldwide.

Residential solar energy storage systems with lithium battery solutions for off-grid home power applications
Wall-Mounted|Mobile|Stackable|Portable

Who We Are

Technology-Driven Solar Storage Provider

Founded by a team with extensive experience in renewable energy systems, Huzhou Qilu Technology focuses on:

    ✅ Product Research & Development
    ✅ Supply Chain Management
    ✅ Quality Assurance
    ✅ Global Marketing & Customer Support

Our team consists of experienced engineers, quality inspectors, and customer service specialists dedicated to delivering dependable solar storage solutions.

A composite image demonstrating Haven Deer's corporate strength: featuring R&D engineers developing and testing energy storage systems in the lab, alongside the sales team engaging with global B2B clients at an international trade show.

Our Manufacturing Partner

Professional Manufacturing Support

Inside a brightly lit electronics manufacturing workshop, several workers are stationed along a green conveyor assembly line. In the center, a worker in a white T-shirt leans over to inspect or assemble white electronic equipment enclosures. Other workers are visible in the background managing different stages of production near storage racks. In the foreground, multiple heavy-duty wooden shipping crates labeled with "UN3480" (indicating lithium-ion batteries) are positioned alongside stacks of white protective foam padding.

Residential Energy Storage Production Line

Skilled technicians assembling lithium-ion energy storage units for residential and commercial use.

Battery Module Assembly & Stacking

Each module is meticulously handled to maintain precision and reliability throughout the battery system.

A high-precision 3000W laser welding machine is performing pole welding on a lithium-ion battery module. A bright blue or white laser beam strikes the battery terminals, creating intense, controlled sparks at the welding point. The automated welding head is positioned precisely over the metallic busbars, connecting the battery poles in a clean, state-of-the-art industrial manufacturing environment.

3000W Laser Terminal Welding

Equipped with industrial-grade 3000W laser welding equipment to achieve efficient, accurate, and reliable battery terminal connections.

A worker on an electronics production line is carefully placing a thin, non-conductive insulation sheet (or insulating plate) onto a lithium-ion battery pack. The worker's hands are shown precisely aligning the insulation layer over the battery cells or busbars to prevent electrical short circuits, in a clean and well-lit workshop environment.

Insulation Board Installation

High-quality insulation boards are installed between battery components to prevent short circuits and enhance electrical safety and structural stability.

Pre-Packing Inspection

Ensuring Zero-Defect Delivery

Professional Packing for Safe Delivery

Robust wooden crates and precise packaging methods protect battery systems during transport, guaranteeing they reach customers in perfect condition.

To ensure stable production capacity and consistent quality, Haven Deer products are manufactured by an experienced production partner with more than 10 years of industry expertise.

Manufacturing Capabilities

  • 3,100㎡ Production Facility
  • Advanced Production Equipment
  • 42 Skilled Employees
  • Fast Component Procurement
  • Monthly Capacity of 300+ Systems
  • Flexible OEM & ODM Production

With an efficient supply chain, component sourcing can be completed within 3 days for most standard orders.

How We Ensure Quality

Quality Comes First

Every Haven Deer system undergoes strict quality control procedures before shipment.

Our Quality Process

  1.  Incoming Material Inspection
  2.  Battery Cell Verification
  3.  Assembly Quality Control
  4.  Functional Testing
  5.  Charge & Discharge Testing
  6.  Final Inspection
  7.  Secure Packaging & Shipment

Our engineering team oversees product development and quality acceptance to ensure every system meets customer requirements.

ESS Battery Pack Charge-Discharge Aging Test
Inside a clean and modern battery manufacturing facility, rows of automated capacity grading cabinets (sorting machines) are testing lithium-ion battery cells. Numerous cylindrical or prismatic battery cells are neatly loaded into the testing slots of the equipment, with LED indicator lights showing the test status. A worker wearing anti-static clothing and a face mask may be seen monitoring the control screen or managing the loading and unloading process.
Precision Cell Pairing with ≤0.5% Capacity Deviation
Inside the Haven Deer testing facility, multiple residential energy storage systems are undergoing continuous charge-discharge cycle tests in aging cabinets to verify their long-term safety, lifespan, and system reliability.
Thousands of Cycles Tested for 100% Reliable Energy Storage
A professional integrated component testing system conducting rigorous electrical performance, protection mechanism, measurement accuracy, and safety tests on BMS, PCS, battery Pack, and the complete energy storage system.
Component-to-System: Haven Deer Integrated Electrical and Safety Testing
An energy storage system (ESS) battery container undergoing safety and performance testing inside a high-temperature environmental chamber, with control panels and monitoring cables visible in the background.
ESS Battery Container High-Temperature Testing

Our Responsibility Model

Clear Responsibilities, Better Products

Huzhou Haven Deer Technology takes full responsibility for:
• Product Design & Development
• Core Component Selection
• Supply Chain Management
• Quality Acceptance
• Global Sales & Support
• Warranty Service
Meanwhile, our manufacturing partner is responsible for production execution and process quality control.
This structure allows us to combine technical expertise with efficient manufacturing resources.

A row of neatly arranged industrial energy storage battery modules, featuring robust casings, positive and negative terminal connectors, and integrated cooling fins.
Grade-A Mobile & Wall-Mounted Lithium ESS Battery

Global Market Presence

Trusted by Customers Worldwide

Haven Deer solar storage products have been exported to more than 20 countries and regions across:
    • Europe
    • Asia
    • Africa
    • North America
    • South America
Our products are widely used in:
    • Residential Solar Systems
    • Off-Grid Energy Projects
    • Backup Power Solutions
    • Small Commercial Installations
Through reliable quality and responsive service, we have earned positive feedback from customers worldwide.

A global market map illustration showing Haven Deer's export network, highlighting that Haven Deer products are successfully distributed to over 20 countries and regions worldwide.
Trusted by Customers Worldwide

Ready to Grow Your Solar Business?

Whether you are a distributor, installer, wholesaler, or project developer, Haven Deer is ready to support your energy storage business.

Contact us today to discuss your requirements.

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