Anker - Nano Power Bank (10K, 45W, Built-In Retractable USB-C Cable), Compact Travel Design - Black

You are not wrong—your observation is actually correct in terms of how battery capacity works. But it is not false advertising; it comes down to how battery capacity is measured. Here’s the real explanation: Capacity is listed at the battery's nominal voltage (3.7V–3.85V) Most power banks advertise capacity based on the internal cell voltage (3.7V). So 10,000mAh means the internal cells hold about 37Wh of energy (10,000mAh × 3.7V = 37Wh). Phone charging happens at 5V or 9V (USB standard) When you charge an iPhone, the power bank must boost the voltage from 3.7V to 5V (or 9V). This step-up conversion involves energy loss (the electronics get slightly warm). As a result, the effective capacity at 5V is much lower. 10,000mAh (at 3.7V) ≈ 37Wh At 5V, the same energy gives roughly 7,400mAh (37Wh ÷ 5V) After ~15–20% conversion loss (heat, voltage conversion), you get about 5,400–6,000mAh actually delivered. So the 5,400mAh rating printed on the back is the usable output at 5V Once you factor in all losses and the voltage step‑up, charging an iPhone 16 Pro (which has a ~3,400mAh battery) for about 5,000mAh of delivered output is completely normal—that's roughly 1.2 full charges of the phone.

Yes, it works perfectly with the iPhone 16. The built-in retractable USB-C cable plugs directly into the phone's USB-C port and supports up to 45W output, which is more than enough to fast-charge the iPhone 16 at its maximum speed (around 20-30W). No separate cable is needed.

Yes — you can use the Anker Nano Portable Charger (White) with the iPhone 17 Pro Max.

The Anker 10,000mAh Portable Charger with 45W max output features USB Power Delivery (PD) and Qualcomm Quick Charge (QC). It supports fast charging for Samsung Galaxy tablets as it is compatible with all smartphones and tablets. The charger mode allows outputs such as 9V⎓3A, which can facilitate fast charging for devices like Samsung Galaxy tablets, meeting their charging specifications. Regarding what is included in the box, similar models of Anker power banks like the Anker 523 Power Bank (10,000mAh) typically include these accessories: A 2 ft USB-A to USB-C cable A 2 ft USB-C to USB-C cable It is recommended to use the included USB-C to USB-C cable for the fastest recharging speed.

The Nano Power Bank, 10,000mAh Portable Charger with 2.3 ft InstaCord Retractable Cable, 45W Max, is TSA-compliant. It features a battery capacity within the TSA limit of 100Wh for carry-on items, ensuring you can bring it aboard an airplane safely.