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Large Pro 2+4 Pin (50A+5A)

The Large Pro 2+4 supports up to 300V AC / 80V DC and a maximum current of 50A. It features IP67-rated protection when mated and IPX7 waterproofing on the battery side, along with 3,000 mating cycles and a wide operating temperature range from -40°C to 105°C, ensuring stable and reliable performance in harsh environments.

Advantages
1. High Reliability, Exceptional Vibration Resistance; Waterproof Panel Design
2. Ease of Use, Proper Connection Detectability
3. Compatibility, Compatibility with Existing Large Series
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Specifications Challenges Positioning Features Applications Cases FAQ Related

Specifications

Rated Voltage: 300V AC(power), 80V DC(signal)
Rated Current: 50A+5A
Withstand Voltage: 2,000V AC
Insulation Resistance: 100MΩ at DC 500V
IP Rating: IPX7 Mated
OperatingTemperature: -40°C to 105°C
Salt Spray: 5% Nacl, 48H
Mating Cycle: 3,000 Cycles
Wire Gauge: Power 9AWG/Max, Signal 5 Pin 20AWG/Max
Wire Processing: Solder
Flammability Rating: UL94V-0

Challenges

With the rapid growth of electric two- and three-wheelers worldwide, reliable EV charging and discharging connectors have become essential for safe and efficient power transfer. The Chogori Large 2+4 series has been a proven industry-standard battery connector for nearly a decade. As e-mobility evolves toward higher voltage, higher current, and longer range, the demand for high-performance connectors continues to rise. At the same time, batteries—being high-value assets—require enhanced protection, as water ingress can lead to performance issues and costly maintenance. This creates a growing need for connectors that provide waterproof protection even in an unmated condition.

In response, we developed the next-generation Large Pro 2+4 — a high-performance EV connector for electric two- and three-wheelers.

Positioning

The Large Pro 2+4 is a high-performance EV charging and discharging connector designed specifically for electric two- and three-wheelers. It supports up to 300V / 50A, featuring high reliability, user-friendly operation, and full compatibility with the Large 2+4 series.
Engineered for e-mobility and battery systems, this connector enables safe, stable, and efficient power connection even in harsh environments — helping customers achieve reliable charging under complex conditions.

Features

1.High Reliability:
● Exceptional Vibration Resistance
The upgraded 4-locking-dots mechanism provides superior vibration resistance, ensuring stable battery discharge under challenging road conditions and enhancing safety and the riding experience.

● Waterproof Panel Design

The panel side achieves IPX7-rated single-sided waterproofing, significantly enhancing performance in outdoor environments, extending the lifespan of batteries and connected equipment, and improving safety.



2.Ease of Use
● Proper Connection Detectability
The Large Pro 2+4 Connector features arrow indicators, enabling users to easily confirm secure connections, ensuring reliable and confident operation.

3.Compatibility
● Compatibility with Existing Large Series

Fully compatible with existing Large connectors, it facilitates seamless transitions without the need to upgrade current batteries, charging stations, or chargers, ensuring stable operation.


Applications

● For Electric Two- and Three-Wheeler Manufacturers
As a high-performance EV connector solution, the Large Pro 2+1+5 offers high reliability and a user-friendly design, helping improve vehicle quality and meet the strict safety and performance demands of the e-mobility market.

● For Battery and Charging Equipment Manufacturers
With enhanced voltage and current capacity, it serves as an ideal battery connector for battery systems and charging equipment, supporting high-power and efficient charging and discharging applications.

● For Shared Mobility Service Providers

Designed for urban mobility and high-frequency operation, its durable and user-friendly design ensures safe and efficient battery swapping, improving overall operational efficiency.


Cases

FAQ

Q

Is there an integrated connector recommended for outdoor LED displays that can transmit both power and signals simultaneously?

A
We recommend an integrated power and signal solution, such as the Large Series multi-pin connectors, which combine power delivery and signal transmission in a single connector for fast, one-step installation.

The Standard and Middle Series also support both power supply (e.g., 300V/20A) and data transmission, while offering IP67 protection and secure thread-locking or push-lock mechanisms.
Q

My electric motorcycle charging interface needs to support 300V/50A. Which Chogori connector series should I choose?

A
We recommend the Large Pro Series. Designed for high-power, safe, and reliable charging and discharging, the series supports 300V and 50A, making it suitable for electric motorcycles operating in challenging road and varying weather conditions. It is also fully compatible with the Large Series.
Q

Which Chogori connectors are suitable for portable energy storage applications?

A
Chogori offers several connector solutions for portable energy storage applications, where compact size, lightweight design, quick mating, and safety protection are essential.

Recommended products include the BangaX100 Series 2+8 pin (100A + 5A) and Bourbon80 Series 2+8 pin (90A + 5A).

These connectors feature an integrated power + signal design, enabling high-current power delivery and device communication within a compact form factor. They also offer keying, reverse-mating protection, and IPX7 protection, making them suitable for charging and discharging interfaces in portable power stations and portable energy storage systems.

They are well suited for applications such as camping, outdoor power supply, and emergency backup power, providing a convenient and reliable connection solution.
Q

Which Chogori connectors are suitable for commercial and industrial energy storage systems?

A
Chogori’s CPL Series is an ideal connector solution for commercial and industrial energy storage systems, where high-current, high-power transmission, reliability, and safety are critical.

The CPL Series covers a current range of 100–300A and is designed for connections between battery clusters and PCS (Power Conversion Systems) in commercial and industrial energy storage cabinets and large-scale energy storage plants.

Featuring high-current contacts and reinforced insulation, the series supports long-term, high-power charging and discharging. It also provides IP67 protection and arc-resistant design, enabling reliable operation in demanding commercial and industrial environments while enhancing overall system safety and stability.
Q

Which Chogori connectors are suitable for residential energy storage systems?

A
Chogori offers a range of connector solutions for residential energy storage systems, where safety, multi-signal integration, and ease of installation are key requirements. The solutions can be divided into two main categories:

1. Power Connection Solutions
The FC31 Series 3+14 pin (70A + 3A) and Large Series 2+13 pin (20A + 5A) support high-current power transmission between battery packs. They feature mis-mating prevention and anti-pullout designs, helping ensure safe and stable operation of residential energy storage systems.

2. Signal & Communication Solutions
The Mini Series 6-pin (2A), RJ45 Series, and USB Series support BMS data acquisition, system monitoring, and communication, enabling real-time equipment status monitoring and remote management.

These solutions are well suited for applications such as residential energy storage cabinets and small-scale energy storage systems.

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