Guide to Selecting EV Charger Pins

Choosing the right EV charger pins is crucial for fast charging safety and efficiency. Keep an eye on these 3 key dimensions:

1. Material: The foundation of conductivity and durability

• Prioritize high-purity brass (copper content ≥90%): This copper-zinc alloy has a conductivity of over 80% IACS, enabling it to quickly conduct high currents (compatible with 100A+ fast charging). Its heat dissipation is better than materials like stainless steel, preventing overheating-triggered protection mechanisms during charging.

• Plating matters: For daily use, opt for nickel plating (thickness ≥3μm) to resist moisture and oxidation; for high-frequency use (such as commercial charging piles), gold plating (0.5-2μm) can further reduce contact resistance and minimize plug-in loss.

2. Structure: Determines plug-in experience and stability

• Contact pressure is key: Qualified pins and jacks need a stable contact pressure of 0.5-1N. Insufficient pressure leads to poor contact at the contact points, causing a sudden increase in resistance and overheating; excessive pressure accelerates pin wear and shortens service life.

• Detail designs add value: Pins with guiding slopes reduce offset wear during plugging; rounded corners at the root of the pin can lower the risk of cable breakage when bent.

3. Certification: The safety bottom line must not be broken

Be sure to look for the GB/T 20234 national standard certification, focusing on two indicators:

• Temperature resistance range (-40℃~85℃): Adapts to severe cold in the north and extreme heat in the south, preventing material embrittlement or deformation under extreme temperatures.

• Plug-in cycle resistance (≥10,000 times): Calculated at 2 plug-ins per day, it can stably last at least 13 years, far exceeding the needs of ordinary household equipment.

Guangdong Corecon Precision Industry Co., Ltd. has been a professional manufacturer of pins, sockets,pogo pins, pogo pin connectors and hardware CNC precision parts in China for 18 years. And we have gotten certificate of ISO9001 and IATF16949. If you have any questions about the pin and socket industry, please contact us and we will provide you with free, one-stop professional solutions within 24 hours.