Explore our premium range of deep cycle lithium battery solutions designed for commercial, residential, and portable applications.
Established in 2010, Shenzhen Grenergy Technology Co., Ltd. is a high-tech enterprise specializing in R&D and manufacturing lithium batteries, energy storage systems, power batteries, battery management systems (BMS), and all-in-one solutions. With a strong commitment to technological innovation, Grenergy has become a leading provider of energy solutions for various applications worldwide.
By merging scientific research with highly optimized cell sorting and mechanical designs, we address the critical market shift from traditional lead-acid systems to modern Lithium Iron Phosphate (LiFePO₄) arrays. Through a Decade of manufacturing expertise, we support OEM/ODM clients in over 60 countries, deploying utility-grade technologies to clean-energy integrators, industrial developers, and home backup resellers.
A B2B industrial guide to understanding cell degradation mitigation, density dynamics, and transition roadmaps.
Lead-acid systems yield low upfront costs but fail via shallow depth-of-discharge (DOD) constraints (typically limited to 50%) and brief cyclic lifetimes of 300 to 500 periods. Grenergy's LiFePO₄ batteries safely achieve 90%-100% DOD, yielding up to 6,000 continuous cycles at 0.5C rates. This lowers the long-term Total Cost of Ownership (TCO) by over 65%.
A deep-cycle battery is only as durable as its weak-cell control. Our proprietary Battery Management Systems feature active cell balancing algorithms, over-current, over-charge, over-discharge, and precise thermal sensors that prevent localized hot spots. These controls guarantee long-term cell matching across modular racks.
Grenergy's R&D department is actively testing hybrid solid-electrolyte cells and Sodium-ion (Na-ion) architectures. While Na-ion delivers outstanding cold-weather performance (-30°C stability) for extreme climates, our core LiFePO₄ chemistry remains the ultimate industrial standard for safety and cycle-life efficiency.
Since its establishment, Grenergy has focused on the development of sustainable energy solutions to meet the growing demand for efficient, reliable, and eco-friendly power systems. With over 10 years of expertise, Grenergy has developed a diverse product portfolio, including Lead-acid replacement lithium batteries, Wall-mounted power walls, Portable power stations, Mobile home energy storage systems, Trolley box portable power stations, and much more. We are committed to enhancing energy efficiency while reducing environmental impact.
Our core values include integrity, innovation, and customer satisfaction, which have been the foundation of our growth. Grenergy’s history is one of continuous improvement and dedication to providing advanced energy storage solutions to businesses and individuals globally. By investing in heavy automated sorting machinery, aging test equipment, and environmental test chambers, we ensure that every lithium pack leaving our facility is optimized for long service life.
Pioneered lithium cell sorting techniques and focused on developing early-stage active balancing BMS topologies for custom battery projects.
Expanded to a 10,000 sq. meter factory floor. Introduced all-in-one residential backup power walls, high-voltage vehicle systems, and industrial rack energy storage.
Grenergy's manufacturing space integrates modern digital tools, utilizing automated cell matching machinery and laser welding robots. Cell sorting is a critical phase; we verify capacity, internal resistance, and voltage differentials to group only the most uniform cells together.
This high-tech production approach minimizes the risk of early pack degradation. Integrated cloud databases log the electrical properties of each cell, creating a complete trace history for every completed deep cycle lithium battery. B2B buyers can rest assured that Grenergy offers robust quality control and stable production schedules.
With over 200 highly skilled professionals working across a nearly 10,000 square meters production space, our monthly output supports high-volume wholesale demands. We keep critical raw materials on hand, stabilizing prices and lead times even during global supply chain fluctuations.
Grenergy specializes in customizing products for a variety of sectors, ensuring optimum performance under diverse field conditions.
For residential backup and commercial energy storage, we offer high-voltage rack-mounted designs and floor cabinet systems. These interfaces connect with top hybrid inverters to enable peak-shaving, load-shifting, and emergency backup power.
Off-grid RV systems need high vibration tolerance and compact enclosures. Grenergy's 12.8V and 25.6V deep cycle lithium batteries replace heavy lead-acid options, supporting high discharge rates without safety risks.
Electric golf carts and light utility vehicles need sustained torque and rapid recharging. Grenergy's 76.8V high-voltage systems handle high start-up currents and charge fully in under 2.5 hours, keeping fleets running efficiently.
Grenergy’s products support various OEM and ODM customized services, allowing us to tailor solutions that meet specific client needs. With nearly 10,000 square meters of production space and a team of 200 highly skilled professionals, we are equipped to deliver high-quality products at scale. Over the years, we have consistently met international industry standards, earning certifications such as ISO9001, ISO14001, ISO45001, UL, CE, FCC, PSE, and UN38.3.
We also provide third-party product liability insurance worth $3 million USD for all products, ensuring our global clients can trust our reliability and commitment to service excellence.
Our engineering team uses advanced hardware-in-the-loop (HIL) simulators to verify custom BMS configurations before manufacturing, lowering integration risks for complex commercial setups.
B2B energy procurement requires strict safety compliance. Grenergy provides a complete legal and quality assurance framework.
To secure global imports and operations, we provide a $3 Million USD third-party liability insurance policy on all exported battery systems. This covers installers and developers against potential liability risks.
All batteries comply with target-market standards, holding certifications like UL1973, UL9540A, CE, FCC, PSE, UN38.3, and MSDS. This streamlines customs clearance and local utility approval processes.
We offer direct support channels between our R&D team and B2B buyers. This helps engineering firms resolve technical questions and commission hardware smoothly, avoiding project delays.
From the beginning, Grenergy’s mission has been to empower the world with cutting-edge energy storage solutions. We believe in a future where renewable energy is the primary power source, and our products are designed to make this future a reality. Through decades of research and development, we’ve become a trusted name in the energy storage sector, helping companies transition to more efficient, sustainable energy practices.
We focus on reliability and clean energy, building durable batteries that make sustainable power accessible and practical for everyday use.
We are proud to have partnered with some of the world’s leading organizations and technology providers. These collaborations help us bring the latest advancements in energy storage and management systems to market, providing our clients with the most efficient and innovative solutions available.
See how global distributors and energy integrators rate their partnership with Grenergy.
"We transitioned our utility utility-cart rental fleet in California from lead-acid to Grenergy's 76.8V Lifepo4 battery systems. The performance improvement has been outstanding. Charging times dropped by 60%, and we have recorded zero cell failures across 400 carts."
"Importing lithium battery packs requires strict regulatory paperwork. Grenergy provides complete UL test files, UN38.3 transport safety documents, and custom certificates. Their $3 million USD product liability policy also helps protect our corporate accounts."
"We specialize in customizing off-grid power systems for RV and marine projects. Grenergy's custom OEM support allows us to design custom housings and program specific BMS cut-off voltages. We recommend them as a reliable, long-term B2B battery supplier."
Direct answers from our engineering team to help you navigate international imports, cell chemistry, and safety standards.
Complete your sourcing design with our cabinet storage solutions, wall-mounted batteries, and specialized mobility power packs.
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