GRAND ENERGY MFG (GUANGDONG) CO LTD Phone Number/ Whatsapp: +(86）136 3268 0693 Email:jacky@gemrexenergy.com
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About Us
GRAND ENERGY MFG (GUANGDONG) CO LTD (hereinafter referred to as GemRexs Power) is a specialized high-tech manufacturer dedicated to the precision production, customized optimization and global supply of high-performance lithium battery pack solutions.
About Us
GRAND ENERGY MFG (GUANGDONG) CO LTD (hereinafter referred to as GemRexs Power) is a specialized high-tech manufacturer dedicated to the precision production, customized optimization and global supply of high-performance lithium battery pack solutions.
Rigorous testing at every stage — from cell incoming inspection to final product aging. Built to last, so you experience fewer failures and less downtime.
Strict Quality Control
Deep experience in light mobility, RV/golf cart, solar storage, lead-to-lithium replacement, UAV, and telecom backup power. Solutions that fit real-world use.
Application Expertise
We take time to understand your specific application and operating conditions — delivering solutions that match exactly what you need, not generic off-the-shelf products.
Precision Needs Discovery
Support both sample-based manufacturing and design-driven manufacturing. From concept to mass production, we respond fast and move efficiently at every step.
Custom OEM/ODM
Strategic stocking and flexible production ensure fast shipment for standard orders and on-time delivery for custom projects.
Reliable Delivery
We may not have local branches everywhere, but we respond quickly. Wherever you are, we address your concerns promptly and thoroughly — because we stand behind every battery we make.
Quick After-Sales
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