Custom Micro Converter Solar Manufacturer & Supplier

Innovative Module-Level Power Electronics (MLPE) & Smart Energy Storage Systems Designed for High Reliability and Global Compliance

Redefining Solar Efficiency

The Evolution of Micro Converter & Inverter Systems in Distributed Energy

As the global energy landscape undergoes a profound structural shift toward distributed renewable sources, Module-Level Power Electronics (MLPE) have emerged as the standard for safety, efficiency, and reliability. Traditional central and string inverter architectures suffer from system-wide efficiency losses caused by partial shading, dust accumulation, thermal mismatches, and varying degradation rates among individual modules.

A Custom Micro Converter Solar system resolves these bottlenecks by performing localized Maximum Power Point Tracking (MPPT) for each solar panel. This optimizes energy output on a module-by-module basis, boosting system-wide yields by up to 25%. Additionally, these systems eliminate high-voltage DC risk, ensuring safer installations for residential, commercial, and industrial facilities.

Litongwei Electronics R&D Facility
40,000+
Sqm Production Footprint
15M+
Monthly Unit Output
10%
Annual R&D Investment
100+
Core Patents Held
Production Line View 1 SMT Equipment 2 Testing Facility 3

About Shenzhen Litongwei Electronic Technology Co., Ltd.

Established in 2005, Litongwei is a national high-tech enterprise specializing in the research, development, and advanced manufacturing of lithium-ion safety control systems and power management solutions. Over two decades of intensive development, our product application scope has expanded from consumer electronics to heavy-duty industrial applications, including electric scooters, e-bikes, motorcycles, golf carts, automated guided vehicles (AGVs), agricultural drones, and energy storage integrations.

We support global B2B clients by providing:

  • Intellectual Property Safeguards: Joint patent development to eliminate infringement risks.
  • Industry-Standard Shared Boards: Optimized designs to reduce BOM costs and shorten time-to-market.
  • Comprehensive Traceability: End-to-end MES system tracking raw materials through final functional checks.
  • Cloud-Based Remote Diagnostics: Real-time monitoring and software-defined upgrades via custom API interfaces.

Leveraging China's Premier Electronics Supply Chain

How Litongwei's dual-base manufacturing delivers high volume, top quality, and structural cost efficiencies.

Dual-Base Infrastructure

We operate 13,000 square meters of independent manufacturing space in Shenzhen, complemented by our 27,000 square meter facility in Huangjiang, Dongguan. This dual-hub strategy separates rapid R&D prototyping from high-volume production, ensuring fast turnarounds and scalable logistics.

SMT & Precision Assembly

Equipped with 24 high-speed pick-and-place SMT machines and 12 automated PCBA production lines, we achieve a monthly throughput of over 15 million control boards and converters. This massive capacity easily absorbs sudden demand spikes while maintaining tight lead times.

Continuous Quality Controls

We maintain strict ISO9001 and IATF16949-certified quality systems, integrating AOI inspection, automated circuit testing, and environmental burn-in testing to guarantee that every micro inverter and BMS performs reliably in extreme conditions.

Localization Support & Global Safety Compliance

Adapting solar technologies to regional grid standards and environmental requirements.

Deploying solar microinverters and energy storage converters globally requires deep compliance with localized grid codes, safety regulations, and environmental profiles. At Litongwei, we design our platforms with dynamic adaptation in mind:

1. Grid Codes and Rapid Shutdown Compliance

Our smart solar micro-converters and microinverters feature built-in grid-matching firmware that aligns with European standards like VDE-AR-N 4105 (Germany), EN 50549, and North American safety standards such as UL 1741 and NEC 690.12 Rapid Shutdown. This guarantees instant system decoupling in the event of grid anomalies, protecting technicians and building infrastructure.

2. Rugged IP67 All-Weather Protection

Solar installations face harsh, wet, and dusty conditions. Our microinverters feature a fully potted, die-cast aluminum enclosure rated for IP67 dust and water resistance. This ensures reliable operation across a wide operating temperature range (-40°C to +85°C) without requiring active cooling fans, extending system lifespans up to 25 years.

3. Smart Battery Protection (BMS Integration)

Balcony solar systems and localized micro-grids increasingly feature integrated battery storage. Our smart BMS boards feature built-in Bluetooth and CAN/RS485 communication protocols, allowing operators to monitor State-of-Charge (SoC), State-of-Health (SoH), and temperatures in real-time. For cold climates, our integrated heating circuit protects cells during sub-zero charging, preventing lithium plating and degradation.

Corporate Development Timeline

Over two decades of research, quality milestones, and manufacturing scale.

2005 - 2010

Technology-Driven Genesis

In 2005, Litongwei launched R&D and manufacturing operations for digital Battery Management Systems (BMS). In 2006, we expanded into power battery systems, securing ISO9001 certification in 2007 and ISO14001 in 2009 to lay our quality-first foundation.

2010 - 2015

Technological Expansion & Patented Innovations

In 2011, we secured 8 utility model and design patents while expanding our mobile power bank and control board lines. In 2012, we established the Litongwei Technology Research Institute. We received the Del New Energy Quality Excellence Award in 2014 and the Gold Partner title from Gaogong Lithium Battery in 2015.

2015 - 2020

Digital Transformation & Automotive Standards

Upgraded our ISO 9001 and ISO14001 certifications in 2016. In 2018, we earned the critical automotive-grade IATF16949 certification and implemented an advanced MES system for automated warehouse and production line tracing. In 2019, we won the Guangdong Battery Industry Association Innovation Award and were recognized as a leading brand in lithium battery protection board technology for two-wheeled vehicles in 2020.

2020 - 2025

Smart Manufacturing & Energy Storage Integration

Implementing our Smart Manufacturing+ strategy, we integrated IoT and Industry 4.0 automation. We expanded into solar microinverters and residential energy storage systems, partnering with global tier-1 brands to drive the worldwide energy transition.

Trusted by Industry Leaders

Our long-term global partners rely on our R&D capabilities and production quality.

Partner Huawei
Partner Lenovo
Partner Desay
Partner Guoguang
Partner Sunwoda
Partner Eve Energy
Partner Guoxuan High-tech

Frequently Asked Questions (FAQ)

Insights and technical clarifications for energy procurement managers and engineering teams.

What is a Micro Converter Solar system, and how does it compare to central inverters?
A micro converter or microinverter-based solar system processes electrical output at the individual panel level rather than routing high-voltage DC through a single central inverter. This enables Module-Level MPPT, preventing shading or panel mismatch on a single module from pulling down the entire string's output. The result is improved energy harvest, lower system design complexity, and significantly enhanced safety due to the omission of high-voltage DC runs.
How does Litongwei ensure IP protection and safety compliance for global markets?
We work closely with clients under strict NDA and patent-sharing terms to prevent infringement and protect proprietary layout designs. Our products carry international approvals like CE, RoHS, and grid certifications (such as VDE-AR-N 4105). We construct our power electronics with automotive-grade tracking systems via IATF16949-approved processes.
What are the primary applications for your IP67 microinverter systems?
Our high-efficiency microinverters (boasting up to 96.5% conversion efficiency) are optimized for residential balcony solar, off-grid commercial equipment, smart agriculture installations, and marine solar kits. Their IP67 rating ensures they run reliably even when mounted directly behind solar modules in high-humidity or dust-heavy outdoor locations.
Can you customize BMS boards for extreme environmental conditions?
Yes, customization is one of our primary services. We design custom BMS boards that include integrated heating components for reliable sub-zero battery charging, Bluetooth connectivity for smartphone-based tracking, and CAN/RS485 interfaces for integration into industrial automated systems, AGVs, or stationary energy storage systems.
What is your typical production lead time and SMT line capability?
With over 40,000 square meters of production space across our Shenzhen and Dongguan factories, we run 24 high-speed pick-and-place lines and 12 automated PCBA lines. This allows us to scale production up to 15 million units per month, delivering standard custom orders in as little as 3-4 weeks.