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.
Manufacturing Plant (M2)
Staffs
Models