AddOn 45 W MagSafe laptop power adapter compatible with MC503LL/A on white background

AddOn MC503LL/A 45W MagSafe Power Adapter

Name: AddOn MC503LL/A 45W MagSafe Power Adapter
Brand: AddOn Networks
SKU: MC503LL/A-AA
Price: 70.05 USD
Availability: InStock

AddOn Networks|

MPN: MC503LL/A-AA

UPC: 821455685358

In Stock

$70.05$116.00

Request for QuoteCall 224-955-1644 for Sales

Free 2-3 Day ShippingArrives by Thursday, Nov 19

Authorized Dealer — Full manufacturer warranty

Save 30% with a Business Account

Exclusive pricing and Net-30 terms. Sign in or create a free account.

Create Free Business Account

Key Features

Output: 45 W, 14.5 V, 3.1 A
Connector: MagSafe-compatible tip (Apple MC503LL/A form)
Use case: Replacement adapter for compatible MacBook Air models
Cable: Integrated DC cable (fixed length)
Safety: Built-in over-current and short-circuit protection

Keep critical Apple notebooks charged and ready for work with a direct-replacement MagSafe adapter rated at 45 W (14.5 V, 3.1 A). Built for field technicians and enterprise support teams, this AddOn-compatible unit fits MC503LL/A-compatible systems so you can replace lost or damaged adapters without changing power profiles. The compact adapter head and integrated cable streamline deployment across service desks, hot-swappable spare kits, and mobile repair carts. Electrical output matches OEM expectations to preserve battery charging characteristics and system stability while running productivity workloads. Choose this adapter where predictable power delivery, consistent thermal behavior, and a tight compatibility match matter more than brand premium — it keeps endpoints online while minimizing logistics and downtime.

Ideal For

Stock replacement adapter for university/lab MacBook Air pools
Spare unit in enterprise desktop support and field service kits
Onsite repairs where OEM adapter is unavailable
Temporary swap during warranty or depot repairs

Why This Product

1Matches OEM voltage and current (14.5 V, 3.1 A) for predictable battery charging
2Lower procurement cost compared with OEM while preserving compatibility
3Compact, fixed-cable design simplifies field swaps versus modular bricks
4Intended for support inventories and rapid replacement workflows

Power

Output Power	45 W
Connector Type	MagSafe-compatible
Output Current	3.1 A
Output Voltage	14.5 V

General

Mpn	MC503LL/A-AA
Brand	AddOn
Vendor	AddOn Networks
Category	power-cooling

Packaging

Package Contents

1 x AddOn MagSafe power adapter

Compatibility

Compatibility Note

Compatible with Apple MC503LL/A models

Purchasing this for your business?

Business account holders on Power & Cooling typically save 30% vs. retail pricing. Create a free account to see your price.

Wholesale pricing below retail

Net-30 terms for qualified businesses

Volume discount tiers

Dedicated account representative

Saved payment methods & PO support

Priority order processing

Create Free Business Account

Frequently Asked Questions

Will this adapter charge my MacBook Air?▾

Yes — this AddOn adapter provides 45 W at 14.5 V and 3.1 A and is intended as a direct replacement for systems compatible with the MC503LL/A form; confirm your system uses that MagSafe profile before purchase.

Does it include surge or short-circuit protection?▾

The adapter incorporates standard over-current and short-circuit protection circuits typical of laptop power supplies to guard the host device under fault conditions.

Is this an official Apple product?▾

No — this unit is an AddOn-compatible replacement designed to match the electrical output and connector profile of the Apple MC503LL/A adapter for support and replacement purposes.

What is included in the package?▾

The package contains one AddOn MagSafe power adapter with an integrated DC cable. It does not include Apple-branded packaging or additional cables.