


HIgh Capacity
21.44kwh
Easy Install
Plug & Play
safe & Reliable
LFP Technology
Extended Range
Adds up to 180+km


BATTERY PRODUCTS
High-quality battery modules and upgrade solutions designed to enhance performance,
extend range and deliver long-term reliability for leading vehicle platforms.

BMW i3 120Ah / 154Ah Upgrade
Battery replacement, capacity upgrade and range extension solutions for passenger EVs and plug-in hybrid vehicles.
BMW Hybrid 26Ah / 34Ah Modules
Battery module replacement, repair and lifecycle support for electric buses, public transport operators and fleet customers.


Porsche Hybrid Battery Modules
Battery modules and technical solutions for electric trucks, logistics vehicles, fleet operations and special-purpose platforms.


VW e-Golf Range Extender
Lithium battery systems for mobile power, industrial equipment, emergency backup and specialized energy applications.
INSTALLATION,TESTING & ROAD TEST VIDEOS
Watch real installation projects,battery testing,road tests and technical demontrations from MTG and our partner workshops.
9:08
BMW i3 54kWh / 154Ah MTG Battery Replacement – Full Installation Process
03:17
VW e-Golf Additional Battery Pack Installation | Battery Upgrade for Extended Range
09:17
Toyota Hybrid NiMH to Lithium Battery Upgrade | Full Step-by-Step for Prius / Aqua / Camry
15:27
154Ah BMW i3 Real-World Test|Upgraded Range in City Driving|Practical Battery Swap Reference
14:22
120Ah Battery Pack Upgrade for BMW i3 | High-Speed Range & Performance Tes
16:43
154Ah Battery Pack Upgrade for BMW i3 | High-Speed Range & Performance Test
POWERING A SUSTAINABLE FUTURE
MTG is a professional battery module manufacturer and solution provider established in 2015. We develop and manufacture battery replacement, capacity upgrade and energy storage solutions for electric vehicles, commercial vehicles and specialized applications.
From cell testing and matching to module assembly, aging and high-voltage validation, our products follow a controlled production and quality inspection process. We also provide technical support, international delivery and installation coordination for customers and partner workshops worldwide.
RELIABLE QUALITY
INNOVATIVE SOLUTIONS
FAST SERVICE
Global Partner
ACROSS MULTIPLE PLATFORMS
From passenger EVs and plug-in hybrids to electric buses, commercial fleets and mobile energy storage, MTG develops reliable battery modules and system solutions for a wide range of applications.

PASSENGER EV BATTERY SOLUTIONS
Battery replacement, capacity upgrade and range extension solutions for passenger EVs and plug-in hybrid vehicles.

ELECTRIC BUS ATTERY SYSTEMS
Battery module replacement, repair and lifecycle support for electric buses, public transport operators and fleet customers.

COMMERCIAL VEHICLE
BATTERY SOLUTIONS
Battery modules and technical solutions for electric trucks, logistics vehicles, fleet operations and special-purpose platforms.

MOBILE ENERGY
STORAGE SOLUTIONS
Lithium battery systems for mobile power, industrial equipment, emergency backup and specialized energy applications.
GLOBAL SERVICE &
TECHNICAL SUPPORT
From inguiry to installation and after-sales supprot.
MTG is with you every step of the way.
SUPPORT FROM INQUIRY TO INSTALLATION
Product Consultation
International Shipping
Installation Guidance
After-Sales Support
ELetrical Safety
Performance Veification
Shipping Compliance
Warranty Support
CERTIFICATIONS & DECUMENTS

QUALITY STANDARDS &COMPLIANCE
Every MTG battery product is inspected and tested before shipment.Product-specific technical and transprotation decuments are avaliable for international delivery and professional delivery professional installation.
COMMON QUESTIONS ABOUT EV BATTERY UPGRADES
Find answers to the most common guestionsabout our battery upgrade solutions
MTG provides EV battery replacement and capacity upgrade solutions for selected electric and plug-in hybrid vehicles, including BMW i3 battery upgrades, BMW hybrid battery modules, Porsche hybrid battery modules, Volkswagen e-Golf range-extension solutions, and other model-specific battery products.
Yes. MTG provides BMW i3 battery upgrade kits for compatible vehicles, including 120Ah and 154Ah battery module solutions. Compatibility depends on the original battery version, vehicle configuration, production year, and VIN.
Yes. MTG’s standard EV battery replacement and upgrade modules are manufactured using new battery cells. We do not use second-hand cells in our regular battery module products.
For validated vehicle-specific solutions, the original charging system and factory fast-charging function are retained where applicable. The upgrade increases battery energy capacity without changing the vehicle’s original voltage platform or core control logic.
MTG’s standard EV battery replacement and upgrade solutions are designed for installation without cutting the vehicle body or changing the original battery compartment structure. Model-specific mounting parts and required accessories are provided where necessary.
Please send us the vehicle model, production year, VIN, original battery capacity, vehicle version, and delivery location. Our team will confirm compatibility, recommend the appropriate EV battery solution, and provide a quotation, shipping plan, and installation support options.

