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Precision-engineered waterproof connectors designed for electric vehicle battery systems, onboard chargers, and automotive electronics — built to perform in the harshest conditions.
M23 IP67 Waterproof Quick-Lock Connector — Reliable China Factory Suppliers for Electric Vehicles and Chargers
M23 IP67 Waterproof Quick-Lock Connector — China Factory Suppliers for Electric Bikes and Vehicles
IP67 Waterproof M28 Bayonet Connector — China Suppliers & Factory for Electric Vehicles and Chargers
China M40 Cable Circular Power Plug Waterproof Connector — IP67 Bayonet Coupling Suppliers & Factory
The global EV battery connector market is experiencing unprecedented growth, driven by accelerating electrification of transportation, expanding charging infrastructure, and increasingly stringent safety and performance standards for automotive electronics.
As electric vehicles grow more sophisticated, the demands placed on battery connectors have intensified dramatically. Modern EV battery connectors must simultaneously handle high-current power transmission (often exceeding 200A), maintain signal integrity for battery management systems (BMS), resist moisture, dust, vibration, and thermal cycling across a wide operating temperature range. The connector is no longer a passive component — it is an active, mission-critical interface between the battery pack, the powertrain, the onboard charger, and the vehicle's entire electronic ecosystem.
The connector industry is evolving rapidly to meet the demands of next-generation electric vehicles, autonomous driving, and integrated energy systems.
EV platforms are migrating from 400V to 800V and beyond, requiring connectors rated for 500A+ continuous current with minimal resistance and heat generation. High-current bayonet and quick-lock designs are becoming the standard for battery pack interfaces and DC fast-charging ports.
IP67 and IP68 ratings are now baseline requirements for automotive-grade connectors. Innovations in sealing materials — including silicone overmolding and dual-seal bayonet designs — ensure reliable performance in rain, submersion, high-pressure washing, and extreme humidity environments.
Rapid assembly and serviceability are critical in automotive production lines and field maintenance. Quick-lock bayonet connectors — such as the M23, M28, and M40 series — dramatically reduce mating time, improve ergonomics, and minimize mis-mating errors in high-volume EV manufacturing.
Modern EV battery connectors increasingly integrate signal contacts alongside power contacts, enabling real-time BMS data transmission, thermal monitoring, and state-of-charge communication — all within a single compact, sealed connector housing.
Automotive OEMs are demanding connectors with lighter housing materials (high-performance engineering plastics, aluminum alloys) and RoHS-compliant contacts to reduce vehicle weight and meet environmental regulations without compromising electrical performance.
International standards (IEC, UL, CE, TÜV, GB) are converging, pushing connector manufacturers to develop globally certified products. China-based manufacturers like Jnicon are investing heavily in R&D and certification to supply Tier 1 automotive partners worldwide.
From battery pack assembly to ultra-fast charging infrastructure, EV battery connectors serve as the critical link across every layer of the electric vehicle ecosystem.
Inside every EV battery pack, hundreds of cells are connected in series and parallel configurations. High-current waterproof connectors provide the inter-module and pack-level connections, ensuring low contact resistance, vibration resistance, and safe disconnection during maintenance. M28 and M40 bayonet connectors are widely used in this application due to their compact form factor and secure locking mechanisms.
The onboard charger converts AC grid power to DC for battery charging. EV battery connectors at the OBC interface must handle high-frequency switching transients, thermal stress, and repeated mating cycles. IP67-rated circular connectors with gold-plated contacts deliver the reliability required for 10,000+ mating cycles in automotive-grade OBC applications.
Public and fleet charging infrastructure demands connectors capable of sustaining 150kW–350kW+ charging sessions. M40 series high-current circular connectors are deployed in charging station cable assemblies, where robust bayonet coupling, thermal management, and IP67 sealing ensure safe, efficient power delivery even in outdoor and all-weather environments.
The rapidly expanding market for electric motorcycles, scooters, and cargo e-bikes requires compact, lightweight, and affordable waterproof connectors. M23 quick-lock connectors are the preferred solution for battery-to-charger and battery-to-motor controller connections in light EVs, offering IP67 protection in a small, easily serviceable package that withstands daily outdoor exposure.
Grid-scale and commercial battery energy storage systems require connectors rated for extremely high continuous currents and long service lifetimes. High-current M40 connectors with IP67 bayonet coupling are extensively used in ESS rack-to-rack interconnects, inverter interfaces, and battery management system wiring harnesses across utility, commercial, and industrial installations.
Heavy-duty electric commercial vehicles place extreme demands on battery connectors — high continuous current, resistance to mechanical shock, and reliable performance across temperature extremes from -40°C to +125°C. MJ32 metal fast second-lock connectors and M40 series products provide the robustness required for bus and truck battery systems operating in demanding logistics and public transit environments.
As EVs increasingly serve as mobile energy storage units (V2G — Vehicle-to-Grid), the connectors linking EV batteries to solar inverters and home energy management systems must support bidirectional power flow. Jnicon's IP67 circular connectors are deployed in solar + storage + EV charging integrated systems, enabling smart energy management at residential and commercial scale.
Electric propulsion is expanding beyond road vehicles into marine vessels, unmanned aerial vehicles (UAVs), and specialty industrial equipment. Jnicon's glass-sintered and high-pressure-sealed connector variants serve these demanding applications where standard IP67 ratings are supplemented by corrosion resistance, altitude tolerance, and extreme mechanical durability requirements.
Jnicon Group combines over 13 years of connector engineering expertise with world-class manufacturing capabilities, serving leading EV brands, energy storage integrators, and automotive electronics suppliers globally.
Both Shenzhen and Hunan factories are officially recognized as National High-Tech Enterprises, reflecting the highest standards of R&D capability and product innovation in China's connector industry.
Our dedicated R&D team of 55 engineers — including 20+ senior engineers — drives continuous innovation, with nearly 300 patents filed and over 80 new patent applications annually since 2019.
Covering over 20,000 sqm with 30,000+ sqm of total building area across five subsidiaries, Jnicon operates one of China's largest and most advanced high-current connector production facilities.
Jnicon products are certified to international standards including CE, UL, RoHS, and IP67/IP68, ensuring compliance with global automotive and industrial electronics procurement requirements.
Since 2018, Jnicon has achieved annual revenue growth exceeding 200%, reaching approximately RMB 300 million in 2023 — making it one of the fastest-growing connector companies in China.
With factory-direct pricing, flexible MOQs, and a dedicated international sales team, Jnicon serves EV manufacturers, charging infrastructure builders, and automotive electronics integrators across Asia, Europe, and the Americas.
Jnicon Group is a high-tech enterprise specializing in advanced connection solutions. Our core product lines include industrial connectors, high-current connectors, controllers, 5G base station connectors, LED connectors, marine and yacht connectors, glass sintered connectors, and communication cables.
These products are widely used in diverse industries such as new energy vehicles (NEVs), energy storage, electric vehicles, solar inverters, AI automation, 5G communication, aerospace, oil exploration/production, high-speed rail, metro systems, LED lighting, and shipbuilding.
The group covers over 20,000 sqm, with a total building area of more than 30,000 sqm.
The Group operates five subsidiary companies:
Hunan Jnicon New Energy Technology Co., Ltd.
Shenzhen Jnicon Technology Co., Ltd.
Shenzhen Xinrongchuang Investment Center
Zhuzhou Jnicon Technology Co., Ltd.
Shenzhen Jnicon Electronics Co., Ltd.
Innovation and intellectual property are central to our development strategy. To date, we have filed nearly 300 patents, with an average of over 80 new patent applications annually since 2019. Our annual R&D investment reaches approximately RMB 10 million, underscoring our position as a key national technology enterprise.
With our advanced sealed system architecture, there is no risk of performance degradation as internal and external conditions remain balanced throughout the product lifecycle.
Throughout its lifecycle, there's no need for additional maintenance interventions, significantly reducing total cost of ownership for our automotive and industrial customers.
Both Shenzhen and Hunan factories are recognized as National High-Tech Enterprises. Our R&D team comprises 55 engineers, including over 20 senior engineers, 25 mid-level engineers, and 10 assistant engineers, all graduated from prestigious universities in China.
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Since the establishment of Shenzhen Jnicon Technology Co., Ltd. in late 2013, the Group has experienced rapid and consistent growth. Since 2018, annual revenue growth has exceeded 200%, making Jnicon one of the fastest-growing companies in the domestic connector industry. By 2023, the Group had nearly 500 employees, with annual revenue reaching approximately RMB 300 million and total output value exceeding RMB 400 million.
In late 2021, the Group's board of directors approved a strategic investment of RMB 400–500 million in Shaoyang, Hunan Province, to expand the industrial chain and establish a new headquarters economy. The project covers a self-owned construction area of around 30,000 square meters and is expected to generate annual output exceeding RMB 1 billion. Upon full completion, it will become the largest high-current connector manufacturing base in China, supporting the Group's goal of listing on the ChiNext Board by 2029.
Explore our complete lineup of IP67 waterproof, high-current, quick-lock connectors — engineered for electric vehicles, battery chargers, and energy storage systems.
M23 IP67 Waterproof Quick-Lock Connector — Reliable China Factory Suppliers for Electric Vehicles and Chargers
M23 IP67 Waterproof Quick-Lock Connector — China Factory Suppliers for Electric Bikes and Vehicles
IP67 Waterproof M28 Bayonet Connector — China Suppliers & Factory for Electric Vehicles and Chargers
China M40 Cable Circular Power Plug Waterproof Connector — IP67 Bayonet Coupling Suppliers & Factory
M28 Bayonet IP67 Waterproof Connector — High-Quality China Suppliers & Factory for Electric Vehicles and Battery Chargers
IP67 MJ32 Metal Fast Second Lock Waterproof Connector — China Suppliers & Factory for High-End Market
China M40 Waterproof Circular Power Plug Connector — High Current Bayonet Connector from Reliable Suppliers & Factory
China M40 Cable Circular Power Plug Waterproof Connector — High Current IP67 Factory Suppliers for Energy Storage Applications