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Company Profile

Preface

Electric power shall be available for everyone and everywhere, at an affordable and reasonable price. We don't generate the electric power - we do the storage, and dedicated to providing efficient, safe and stable battery power supply to every need.


Profile

From decades of years' experience of manufacturing and supplying Lead-Acid batteries Grand Energy Manufacturing Co Ltd (known as GEMBATTERY) has obtained good market-share by continously offering reliable quality batteries to global customers. In 2016 GEM has estalished GRAND ENERGY TECH (XIAMEN) CO LTD (known as GET) as the R&D center to explore more possibile limits of the battery material, battery production technology and new types of the batteries which is including the Lithium-ion Battery under the name Grand Energy Mfg Limited / GEMFG and incorporated GUANGDONG TIEQUAN NEW ENERGY TECHNOLOGY (to be renamed as Grand Energy Manufacturing in 2026) as Lithium-ion battery manufacturing unit, to expand the entire business scale and to develop the variety of Lithium-ion batteries. GEMBATTERY as Lead-Acid battery manufacturing unit we operate a 60,000 m2 manufacturing factory located in QuanZhou City FuJian Province since 2004, with more than 550 staffs participating in the production section with capacity 144,000 KVAh monthly, converted to 120,000 pieces of 12V100Ah batteries monthly. GEMFG as Lithium-ion battery manufacturing unit we operate a 3,500 m2 manufacturing factory located in GongGuan City Guangdong Province since 2021, with more than 50 staffs participating in the production section with capacity 15 MWh monthly, converting to 15*40' containers load. The company and the products have been qualified with certificates of ISO9001, ISO14001, OHSAS18001, UN38.3, UL, CE, RoHS, TLC (powerful certificate for supplying batteries to China domestic telecom and grid companies) and complied with IEC60896-21/22, IEC61056-1/2 and IEC61427-1/2, IEC62133 and IEC62619. More importantly, with more than 21 years of OEM experience, we are fully educated by customer-oriented mind and formed with initiative and flexible cooperation. Persisting on quality assurance and technical innovation, our batteries have been delivered to customers world-wide, and are approved by global open market.


Products

GEMFG is developing different technology to produce and supply various kinds of lead-acid batteries with extended features for wide-range applications.


➤ Technology

  • Lithium (LiFePO4) Battery

  • Lithium NCM (Nickel Cobalt Manganese) Battery

  • Lead-acid AGM Technology (SMF SLA battery)

  • Lead-acid GEL Technology (AGM-Gel and PE/PVC-Gel)

  • Lead-acid Tubular-GEL Technology (OPzV battery)

  • Lead-acid Tubular Technology (OPzS battery, Vented-Wet)


➤ Feature assortment

  • Low-voltage home solar power

  • High-voltage BESS for Industrial and Commercial sector

  • General Purpose

  • Standby Power (Float Service)

  • Long Life (Standby)

  • Long Life (Cyclic discharge)

  • High-Rate discharge

  • Deep Cycle (Deep and Cyclic discharge

  • High-Low Temperature (-45℃ to 65℃)


➤ Application

  • Renewable Energy Power Reserve (Solar & Wind Power system)

  • Household / Home solar power

  • UPS & EPS system

  • Security & Alarm system

  • Emergency lighting & Sound

  • Medical Power Assurance

  • Mobile Power Supply Assurance

  • Telecommunication & Towers (Radio wave station & BTS)

  • Sizable power reserve system (On&Off-grid Power, Power Plant)

  • Motive Power (Golf buggy, Electric-Bike (2 wheels), E-Tricycle (3 wheels), E-Vehicle (4 wheels), Floor Sweeper, Electric Wheelchair and Scooter)

  • Engine starter (Motorcycle)

 

Professionals

GEMFG has teams of experts with great and long time experience working in Product Engineering, R&D, PMC, Quality Control, and Process Management. With the purpose of "Offering Reliable and Powerful Batteries", GEMFG is doing a lot to control every process of quality-management during the production. Our in-house labs make great support to our products, in the plate testing lab we got both manual chemical-dropping/mixing testing station and Spectrum instrument ➤to analyse the composition of ①the battery plates ②the grids, ③the lead ingot. The analysis correctly shows the excellent purity of Pb% from the lead ingot more than 99.996%, it's also showing the PbO2% from PAM and Pb% from NAM of the battery plates which help us to know the plate-pasting and plate-formation have been well processed, and ensure the finished-plates for the coming battery-assembly are in best condition. ➤We analyze the formation and conversion of PbSO4 to know round-trip of electric power Reserve and Supply performance of the plates during the cycles charged and discharged. In the battery testing station, ➤we create extreme conditions (constant high or low temperature, constant high power discharge, short circuit current test, etc.) and ➤execute destructive experiments on completed-batteries to know the electric limits and to prevent micro-short-circuit. Apart from the electric tests, ➤experiments on Semi-products are regular. We cut open the inter-cell connection to check the welding quality, we check the status of internal terminal installation to assure the further sealing quality and prevent leakage. We believe we shall well know the batteries before delivering them to customers.


Power Solution

We have been cooperated with many customers who keep different requirements of the power systems. From decade years dealing with customers, our expertise have been well educated, we could always find a correct way to develop the best power solution for any particular application and requirement. We do research on the material of battery plates to ensure the correct formula of battery-plate fabrication has been processed. We do study on the composition of the plate chemicals and additives, to ensure the batteries could present optimal performance as per particulars. No matter for civil purpose, or industrial applications, or critical conditions, GEMFG would be the correct choice and the best proposal for the battery power solution.

Promising

The essential business value and commitment of GEMFG is to be a reputable partner who will supply you with reliable and powerful products to support your power system. We proudly present to you the GEMFG with optimized quality and long-lasting-stable performance, offering you the right batteries, make you a peace of mind. With 7*24 hours sales and pre-sales support, you will get replied timely with valuable information. To experience a pleasant cooperation with GEMFG right now. 

Our Services

Our expert staffs are always ready to cooperate with you and to provide professional service for you.

Expert Team

Global supply

OEM Service

Quality Assurance

Innovation

Manufacturing Plant (M2)
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News

GEMFG TelecomPro 25.6V 120Ah Smart LiFePO4 Battery — Engineered for unwavering telecom resilience! Precision-built with high-density LiFePO4 cells, this powerhouse delivers 3072Wh energy with 3000+ life cycles, ensuring mission-critical reliability.  

Meet the 12.8V 40Ah LiFePO4 Energy— Where density meets durability. Configured with military-grade 4S2P 32140 cells, this rechargeable lithium powerhouse unleashes 512Wh sustained output and 2,000+ deep-cycle resilience. 

There is rising global demand for deployable megawatt-scale solutions, our 48V 280Ah wheeled powerhouse redefines energy mobility. Engineered with military-spec Rept cells and validated through 1,500+ cycle UN38.3 certification, this compact titan delivers infrastructure-grade power where static systems fail. 

In the pursuit of quality living and autonomous mobility, electric wheelchairs serve as indispensable companions for individuals with limited mobility, restoring confidence and enabling exploration of the wider world. The sustainability and safety of this freedom hinge critically on a high-performance battery. GEMFG electric wheelchair batteries, engineered with cutting-edge LiFePO4 lithium technology, deliver unparalleled performance, innovative design, and meticulous safety integration, revolutionizing the user experience while establishing themselves as the industry's trusted benchmark.  

Residential energy independence becomes reality with our 15.072kWh movable powerhouse! Introducing the GiB 48F314 (48V 314Ah) – engineered for compact spaces yet delivering industrial-grade capacity. Scale effortlessly via parallel connections to match your growing energy demands. 

On the green golf course, golf carts are not only a convenient means of transportation for players, but also an indispensable partner for them to enjoy the golf game. The performance of a golf cart depends largely on the battery it carries. GEMFG golf cart batteries, leveraging advanced LiFePO4 lithium technology, offer superior quality and powerful performance, injecting lasting power into golf carts, allowing every player to enjoy the fun of swinging on the golf course. 

Seamless energy integration achieves new heights with the GiB A48-105! This groundbreaking unit combines a 5kW pure sine wave inverter and 48V 105Ah (5kWh) LiFePO4 storage in one ultra-compact chassis. Scale from 5kWh to 30kWh by connecting 6 units in parallel – effortless expansion for evolving power needs. 

With the growing demand for sustainable energy solutions, reliable power storage has become essential for modern applications. As a key component in solar lighting systems and small-scale power needs, the GEMFG 6.4V 2100mAh LiFePO4 Battery Pack stands out for its durability, efficiency, and safety. This article explores the advantages of our LiFePO4 technology, helping you make an informed choice for your energy needs. 

Across urban avenues and rural pathways, solar street lights harness renewable energy to deliver safe, eco-conscious illumination – where GEMFG LiFePO4 solar batteries serve as the cornerstone technology, leveraging superior deep-cycle performance and intelligent energy management to maximize photovoltaic efficiency while minimizing grid dependency for truly autonomous off-grid lighting solutions. 

The rapid evolution of renewable energy technologies and surging demand for reliable power storage have positioned lithium-ion batteries as essential components across energy systems. Engineered for superior performance in solar storage, emergency backup, and portable applications, GEMFG’s 3.2V 25Ah Lithium-Ion Battery Pack delivers unmatched reliability – explore its advanced features to transform your power solutions. 

High-fidelity audio experiences demand uncompromising power stability—the GEMFG SoundCore 12.8V 6000mAh LiFePO4 Battery delivers championship-grade performance for portable speakers, PA systems, and professional audio rigs. Experience how its precision engineering elevates critical sound applications. 

As the convenience and complexity of modern life increase, so do our needs for security. In emergencies, lights are an integral part of our lives. Whether it is a sudden power outage, outdoor adventure or natural disaster, emergency lights can provide us with valuable lighting protection. One of the core components of emergency lights is the battery. 

Reliable high-capacity power solutions have become essential for demanding applications with rapid advancements in electric mobility and renewable energy systems. As a critical component in electric vehicles, marine systems, and off-grid installations, the GEMFG 51.2V 105Ah LiFePO4 Battery delivers unprecedented performance and military-grade durability. This article details the groundbreaking technology behind our flagship battery system. 

In this era prioritizing efficiency, environmental sustainability, and technological advancement, the evolution of energy storage solutions has become fundamentally transformative, with GEMFG emerging as the vanguard through its premium GIB Series LiFePO4 batteries that redefine performance benchmarks across industrial equipment and renewable energy systems by seamlessly integrating extended lifecycle durability, ecological responsibility, and uncompromised safety to dominate diverse application landscapes.  

News