AJ29 Slim Power Bank with Built-in Type-C Cable | OEM

Description

AJ29 Power Bank is a slim 10000mAh portable power bank with a built-in USB Type-C cable, Type-C input/output, side indicator lights, and a compact carry-loop design for everyday backup charging.

Frequently Asked Questions: AJ29 Slim Power Bank

1. At only 47g, is the AJ29 the lightest 10000mAh power bank in the YULIDA lineup?

Yes. The AJ29 uses a single 146074 battery cell — an ultra-compact format that allows the entire unit to weigh just 47g while delivering 10000mAh. This makes it significantly lighter than standard 10000mAh power banks, which typically weigh 180–220g. The slim 18.7mm thickness also means it slides into any pocket without bulk, making it ideal for minimal everyday carry and corporate gift applications where portability matters.

2. The built-in Type-C cable is bidirectional — what does that mean in practice?

The integrated Type-C cable serves dual purposes: it charges the power bank itself from any USB-C adapter, and it charges your device from the power bank. You never need to carry a separate cable. When plugged into a 12V/1.5A adapter, the AJ29 recharges in approximately 2.5 hours. When outputting, the same cable delivers up to 12V/1.67A (20W) to fast-charge iPhones, Android phones, and other USB-C devices.

3. How does the side indicator light work and what battery levels does it show?

The AJ29 features side-mounted LED indicator lights that display the remaining battery capacity at a glance. Each LED represents approximately 25% of charge — four lights mean 75–100%, three lights mean 50–75%, two lights mean 25–50%, and one light means below 25%. The indicators activate briefly when you plug in a device or press the power button, then turn off to conserve energy.

4. Can the AJ29 charge devices while it is being recharged (pass-through charging)?

Yes, the AJ29 supports pass-through charging. When you connect the built-in Type-C cable to a wall adapter and simultaneously connect a device to the Type-C output port, the power bank routes energy to the connected device first, then charges its own internal battery. This is useful for overnight charging scenarios where you want both your phone and the power bank ready by morning.

5. Is 12V input safe for all USB-C wall adapters, or do I need a specific charger?

The AJ29 supports 5V/3A, 9V/2A, and 12V/1.5A input voltages, which covers the vast majority of USB-C PD adapters on the market. You do not need a proprietary charger — any standard USB-C adapter from an iPhone, Samsung, Google Pixel, or iPad will work. The power bank automatically negotiates the highest safe voltage with the adapter, so using a 5V adapter simply means slower charging rather than any safety risk.

6. How durable is the built-in Type-C cable for long-term daily use?

The integrated cable is rated for over 10,000 insertion cycles and uses a reinforced TPU jacket that resists bending fatigue. Since the cable is permanently housed inside the slim body when not in use, it avoids the common failure points of detachable cables — namely connector wear and cable tangling. The cable extends to a comfortable length for phone use while charging and folds flush into the body when stored.

7. What OEM customization options make the AJ29 compelling for corporate gifting programs?

The AJ29’s ultra-slim profile and 47g weight make it an exceptional corporate gift item. OEM options include custom logo printing on the front panel, brand-specific packaging boxes, Pantone-matched shell colors (MOQ 500), and pre-loaded digital content on the power bank’s Type-C interface. The 10000mAh capacity at this weight class is rare in the market, giving your brand a premium differentiator in promotional product catalogs.