SEGUMA J1772 EV Charger Extension Cable 21ft 40A — IP66 Durable TPE for Level 1/2

SEGUMA's 21-foot J1772 EV charger extension cable extends your Level 1 or Level 2 charging reach for J1772-equipped electric vehicles and PHEVs, safely delivering up to 40 amps of current.

If your charging station or outlet sits farther from your parked EV than the stock cable allows, this SEGUMA extension cord gives you the extra range without changing chargers. Designed specifically for J1772 plugs, the cable preserves charging performance while adding flexibility for home, workplace, or public charging situations. It is not a vehicle adapter—Tesla drivers will need a separate J1772 adapter (not included).

How much extra reach does this extension provide?

The extension adds 21 feet (approximately 6 meters) to your existing J1772 cable length, making it easier to reach charging ports in tight parking layouts or when parked at a distance from the charger. The longer length reduces the need to reposition the vehicle or charger.

• Length: 21 ft (6 m)
• Designed for Level 1 and Level 2 J1772 connections
• Makes charging possible across wider parking spaces

Will using this extension slow down charging or cause power loss?

SEGUMA engineered the cord to support up to 40 amps with heavy-gauge 100% copper conductors and silver-plated inlets to minimize resistance. That combination preserves efficient current flow so you can maintain strong charging rates with minimal voltage drop.

• 40A maximum current rating for robust charging
• Silver-plated terminals improve conductivity and reduce heat
• Thick copper core supports steady, efficient charging

Is the cable durable enough for outdoor use and rough conditions?

The SEGUMA extension uses TPE-sheathed 100% copper wiring and solid J1772 connectors for long-term durability. Rated IP66, it resists heavy rain and dust ingress so it stands up to outdoor charging environments and seasonal weather.

• Outer material: durable TPE over copper conductors
• IP66 rating for protection against water jets and dust
• Reinforced J1772 plugs for repeated connect/disconnect cycles

What safety and support features are included?

Safety-focused details like silver-plated inlets and quality copper conductors cut down overheating risk and boost electrical reliability. SEGUMA backs the extension with a 12-month guarantee and customer support to address operational questions or quality concerns.

• Silver-plated inlets for improved thermal and electrical performance
• 12-month guarantee from SEGUMA with after-sales support
• Built to meet everyday EV charging safety and durability needs

Who is this for? EV and PHEV owners with J1772 charging ports who need more cable length for convenient charging at home, work, or public stations will benefit most. The SEGUMA 21-foot, 40A extension is suited for drivers who want reliable, weather-resistant performance without compromising charging speed. Note: this cord is made specifically for J1772-equipped vehicles—Tesla owners must use a separate J1772 adapter (not included).