AJ40 Premium Aluminum Magnetic Power Bank 10000mAh | OEM

Description

AJ40 Power Bank combines a slim aluminum alloy body, magnetic wireless charging, and PD 20W Type-C output for premium daily backup power.

Frequently Asked Questions: AJ40 Premium Aluminum Magnetic Power Bank

1. What makes the AJ40 different from the AJ39 if both are aluminum magnetic power banks?

The key differences are capacity and finish. The AJ40 offers 10000mAh (double the AJ39’s 5000mAh), providing 2+ full phone charges versus the AJ39’s 1 charge. The AJ40 also features two premium color options — Gunmetal and Titanium — compared to the AJ39’s standard aluminum finish. The AJ40 measures 66×14.2×103.5mm, making it slightly taller but thinner than the AJ39 (104.7×67.7×10.1mm), offering a different ergonomic profile suited for users who need more capacity in a premium metal body.

2. How does the Gunmetal and Titanium finish hold up against scratches and fingerprints?

Both finishes use an anodized aluminum process that creates a hard ceramic-like surface layer (HV 300+ hardness rating) resistant to everyday scratches from keys, coins, and phone cases. The Gunmetal finish has a matte texture that naturally hides fingerprints, while the Titanium finish has a subtle brushed effect that camouflages smudges. Unlike painted surfaces, anodized finishes will not chip or peel — the color is integrated into the aluminum oxide layer itself.

3. Can the AJ40 charge two devices simultaneously via wireless and Type-C?

Yes. The AJ40 supports simultaneous wireless charging (15W Qi) and Type-C output (20W PD). You can place an iPhone on the magnetic pad for wireless charging while connecting an Android device or AirPods to the Type-C port. The total combined output is capped at 20W to prevent overheating — the system intelligently distributes power, typically giving priority to the wired connection for faster charging while maintaining steady wireless output.

4. How does the aluminum body handle heat during extended 15W wireless charging sessions?

The aluminum alloy body is a significant thermal advantage during wireless charging. Unlike plastic bodies that trap heat, aluminum dissipates it rapidly — the surface temperature during a 30-minute 15W wireless charging session stays below 38°C, compared to 42–45°C on equivalent plastic-bodied power banks. This lower operating temperature extends battery cell lifespan and prevents the thermal throttling that reduces wireless charging speeds on hotter devices.

5. What is the 20W PD Type-C output capable of charging beyond phones?

The 20W PD output (5V/3A, 9V/2.22A, 12V/1.67A) can charge iPhones at full speed, fast-charge most Android phones, power AirPods Pro cases, charge iPad Minis and iPad Airs at near-full speed, and provide a maintenance trickle charge for USB-C laptops like MacBook Air. It cannot fast-charge larger laptops that require 45W+, but it will keep a MacBook Air running during light tasks like web browsing or document editing.

6. Does the AJ40 support MagSafe charging at the full 15W, or is it limited to 7.5W?

The AJ40 delivers genuine 15W Qi wireless charging, not the 7.5W limitation imposed by older non-MagSafe chargers on iPhones. The N52 magnets provide proper MagSafe alignment, which triggers the handshake between the power bank and iPhone to unlock full 15W speeds. This applies to iPhone 12 and later models. Non-Apple Qi devices (Samsung, Google) also receive up to 15W depending on their respective wireless charging protocols.

7. What OEM customization options position the AJ40 for the luxury corporate gift market?

The AJ40’s premium aluminum body and Gunmetal/Titanium finishes make it a standout in luxury corporate gifting. OEM options include custom laser-etched logos on both sides, exclusive Pantone-matched anodized colors (MOQ 1000 for custom colors), premium gift boxes with magnetic closure and foam inserts, and bundled carrying pouches in matched materials. The 10000mAh capacity in a metal body commands a higher perceived value than plastic alternatives, making it suitable for executive-level gifts, VIP client appreciation, and premium retail bundles. MOQ is 500 units.