GSL ENERGY is a custom lithium battery manufacturer with over 15 years of experience delivering reliable, scalable energy storage solutions worldwide.  As a professional 51.2V battery manufacturer, we focus on designing and producing advanced lithium battery power wall systems tailored for residential, commercial, and industrial applications.

Whether you're launching a new solar product line or expanding your energy storage portfolio, GSL is your ideal battery manufacturer OEM and battery ODM supplier.  We offer fully customized solutions — from size, casing, BMS software to branding — under our flexible lithium battery OEM services.

With over 150,000 customers globally and more than 120,000 successful energy storage projects completed, GSL ENERGY is trusted by installers, EPCs, and distributors across 100+ countries. 

✔ Custom Voltage & Capacity
24V / 48V / 51.2V | 100Ah–300Ah | High-voltage battery options available

✔ Private Label Branding
Your logo, label, and outer casing design – fully OEM-ready

✔ Smart BMS Integration
Supports CAN, RS485, and RS232 protocols for seamless energy management

✔ Versatile Enclosure Designs
Power wall, rack-mounted, cabinet, or all-in-one design | IP65 outdoor-rated options

✔ Inverter Compatibility
Fully compatible with major hybrid inverters, including Deye, Sol-Ark, Growatt, and Victron – covering over 90% of market brands

Partner with GSL ENERGY — your one-stop battery manufacturer OEM for fully custom lithium battery solutions built for the global market.

The MOQ (Minimum Order Quantity) for OEM battery orders depends on your specific requirements, including voltage, capacity, casing design, and branding needs. We offer flexible solutions to support your business stage.

Please feel free to contact our sales team with your project details — we'll provide a tailored quotation and MOQ based on your needs.

At GSL ENERGY, we make your battery ideas a reality.  From concept to final shipment, our streamlined OEM/ODM process ensures you receive high-quality, customized lithium battery solutions — on time and to spec.

1. Requirement Consultation
We listen to your needs — voltage, capacity, design, branding, certification — and provide expert advice.

2. Proposal & Design Confirmation
Our engineers provide detailed solutions, including system design, enclosure type, and communication protocol.

3. Prototype & Test
We build samples for performance testing, compatibility validation, and customer approval.

4. Mass Production & Certification
Once approved, we move to full-scale production with strict quality control and certification support (CE, UN38.3, UL, IEC, etc.).

5. Logistics & After-Sales Support
Global delivery with full technical support — including remote guidance, manuals, and warranty service.

With over 120,000 projects delivered and 150,000+ global users, GSL ENERGY is your reliable partner for battery manufacturer OEM and custom lithium battery services.

Global Distributors & Installers Welcome
Would you like a custom voltage or cabinet integration? Want to build your brand with white-label batteries?

We're here to help.