AJ24 AC Plug Power Bank with Type-C Cable | 5000mAh Travel OEM

Frequently Asked Questions: AJ24 AC Plug Power Bank with Type-C Cable

1. At only 50.5 grams, is the AJ24 the lightest AC-plug power bank available?

At 50.5g including the integrated AC plug and built-in Type-C cable, the AJ24 is among the lightest self-contained wall-charging power banks in production. For context, a standard AA battery weighs approximately 23g — the AJ24 weighs barely more than two AA batteries. This extreme lightweight design is achieved through the 115252 single-cell configuration, an ultra-compact AC-DC converter module, and an ABS+PC shell that eliminates any unnecessary structural mass. For B2B buyers, the 50.5g weight is a headline specification that positions the AJ24 in the “ultralight travel” and “emergency backup” categories — markets where every gram is scrutinized. The AJ24 literally weighs less than the charging cable that most power banks require you to carry separately.

2. How does the AC plug work internationally and what voltages does it support?

The AJ24’s folding AC plug accepts 110-240V at 50-60Hz, covering all global voltage standards without a voltage converter. The built-in AC-DC converter automatically adjusts to the input voltage — simply plug it into a wall outlet in the US (110V), Europe (230V), UK (230V with adapter), or Japan (100V) and it will recharge normally. The plug itself is a US/China Type A flat-pin design. For international travel, YULIDA offers compatible clip-on adapters for EU Type C, UK Type G, and AU Type I sockets — these are small, lightweight adapters that snap onto the existing plug pins without adding bulk. The AC input is rated at 10W, so recharging the 5,000mAh battery from a wall outlet takes approximately 1.5-2 hours regardless of country.

3. Can the AJ24 charge a phone directly from the wall without using its internal battery first?

Yes, the AJ24 supports pass-through AC charging. When plugged into a wall outlet, AC power is converted to 5V DC and routed to both the built-in Type-C cable and the internal battery simultaneously. A connected phone charges directly from wall power at up to 5V/3A (15W), with any remaining power trickling into the battery. Once the phone is fully charged, all 10W of AC input is directed to recharging the internal battery. When unplugged from the wall, the AJ24 seamlessly switches to battery power without interrupting the phone’s charge — the transition is instant and the phone does not reset its charging session. This pass-through behavior means you can use the AJ24 exactly like a wall charger at your hotel, and then grab it as a power bank when you head out.

4. Is 5,000mAh enough for a travel power bank — what does one charge actually cover?

The 5,000mAh AJ24 provides approximately one full charge for most modern smartphones: about 0.9-1.0 charges for an iPhone 15, 0.8 charges for a Galaxy S24, and 1.2 charges for an iPhone SE. For travel, this covers the most critical use case: your phone dies mid-journey and you need enough power to reach your destination, make calls, and navigate. The AJ24 is not designed to be your only power source for a week-long trip — it is the emergency backup that you always have with you because it weighs nothing and requires no extra cables. For B2B buyers, the AJ24 is ideal as a promotional travel item (airlines, hotels, travel insurance companies), a conference swag item, or an impulse purchase at airport convenience stores where travelers realize they forgot their charger.

5. Does the built-in Type-C cable support fast charging or is it limited to 5V only?

The AJ24’s built-in Type-C cable outputs at 5V/3A (15W) — standard USB-C charging speed. It does not support higher-voltage PD profiles (9V, 12V, etc.) because the 5,000mAh single-cell configuration limits the maximum output voltage. In practical terms, 5V/3A charges an iPhone at approximately 12-15W (near maximum), a Samsung phone at 10-12W, and most accessories at their full speed. The AJ24 prioritizes compatibility and simplicity over raw speed — the 5V/3A profile works with virtually every USB-C device ever made, with zero protocol negotiation failures. For a travel emergency charger, universal compatibility is more valuable than peak wattage: you want it to work with whatever device you or a travel companion happens to have, first time, every time.

6. How durable is the folding AC plug mechanism after repeated use?

The AJ24’s folding plug uses a stainless steel hinge pin and a detent mechanism with two positive stops (fully folded and fully deployed). YULIDA tests the folding mechanism through 5,000 deployment cycles — equivalent to plugging and unplugging three times a day for over four years — without loosening or failure. The plug blades are nickel-plated brass (not stamped steel) for corrosion resistance, particularly important for travel use where the power bank may be exposed to humid environments. The detent provides a satisfying click when the plug reaches the fully deployed position, giving tactile feedback that it is securely locked and ready to insert into an outlet. The plug folds flush with the body with no protruding edges that could snag on clothing or bag lining.

7. What OEM customization positions the AJ24 for the travel, hospitality, and promotional products markets?

At MOQ 500, the AJ24’s 50.5g weight and self-contained design make it exceptionally cost-effective for promotional distribution — shipping costs are dramatically lower than heavier power banks, and there is no need to include a separate charging cable in the package. The flat 98.5×63.5mm surfaces on both sides provide approximately 62cm² of printable area each — one side for brand artwork, the other for usage instructions or a travel-themed illustration. For hotel and airline brands, the AJ24 can be packaged in a slim welcome card format that fits in a room key envelope or seat-back pocket. The folding plug mechanism can include a small brand-embossed area visible only when the plug is deployed — a subtle detail that creates a moment of brand discovery. For travel insurance or booking platform promotions, the packaging can include a QR code sticker that links to the brand’s app download page, turning each AJ24 into a physical acquisition channel.