Generic 143W Power Adapter for 24-inch iMac M1/M3/M4 — Red compact replacement, stable high-watt power

Compact 143W replacement power adapter built to reliably power 24-inch iMac models with M1, M3, and M4 chips.

This red 143-watt charger is engineered as a direct replacement or spare for 24-inch iMac systems (compatible with A2439, A2438, A2873, A2290, A2388, A3247, A3137). It supplies stable, high-wattage power so your desktop can handle daily tasks, creative workloads, and extended sessions without interruption. The adapter’s form factor is portable enough for a second workstation, travel, or to keep on hand when the original cable or brick is misplaced or damaged.

How does this adapter match my 24-inch iMac?

The adapter is designed to meet the power requirements of Apple’s 24-inch iMac models that use M1, M3, and M4 chips. Compatibility listing covers the common model numbers so you can quickly verify it fits your machine. Using a matching-wattage adapter helps maintain expected performance and stability during heavy use.

• Fits iMac model numbers: A2439, A2438, A2873, A2290, A2388, A3247, A3137
• 143W output tailored for 24-inch iMac power draw
• Connector and pin layout compatible with original Apple power input

Will this adapter keep my iMac running during intense workloads?

Yes — the 143-watt rating supplies enough overhead to support processor- and GPU-intensive tasks while maintaining stable voltage. That prevents unexpected shutdowns when you’re rendering, compiling, or multitasking. It’s suited for both short bursts of heavy load and prolonged sessions.

• Consistent power delivery for peak performance
• Suitable for creative apps, video calls, and multitasking
• Built to minimize power fluctuation under load

Is this adapter a good spare or travel charger?

Its compact footprint and straightforward plug-in design make it a practical spare to keep at a second desk or in a travel bag. Having an extra adapter eliminates downtime when moving between home, office, or on-site work. The red finish also makes it easy to identify among other cables and power bricks.

• Compact and portable for travel or multi-desk setups
• Red housing for quick visual identification
• Durable construction for frequent plugging and unplugging

What should I expect from build quality and safety?

The adapter is built to offer steady performance with protections against common electrical issues. While not an official manufacturer-supplied brick, it follows typical safety practices for modern power supplies. Always inspect the adapter and cable for damage before use and avoid exposing components to moisture or extreme heat.

• Stable output designed to protect your iMac’s power circuitry
• Standard safety features to reduce risk of overcurrent and overheating
• Compact casing for easy storage and handling

Who is this for? If you own a 24-inch iMac with M1, M3, or M4 silicon and need a reliable replacement, backup, or travel charger, this 143W adapter is a practical choice. It's aimed at users who want the correct wattage and connector compatibility without sourcing an original replacement immediately — ideal for creatives, remote workers, families sharing devices, or anyone who needs uninterrupted desktop power. Verify your iMac’s model number before purchase to ensure compatibility.

• High Power Output: 143W for efficient charging performance.
• Wide Compatibility: Designed for 24-inch M1, M3, and M4 iMac models.
• Reliable Supply: Stable power delivery for extended use.
• Replacement Solution: Handy spare for lost or damaged original adapters.
• Portable Design: Compact and easy to store or travel with.