Smartphone Power Banks and Wireless Charging
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Smartphone Power Banks and Wireless Charging
In daily dynamics, a discharged smartphone can mean a missed flight, an unpaid bill, or an unread important email. VIDEX daily series power banks (external batteries) are designed to fit perfectly in your pocket while providing maximum charging speed. Here you will find both classic, ultra-light models (weighing only about 220g) with 22.5W fast PD (Power Delivery) charging, as well as innovative wireless magnetic stations for iPhone and Android devices. Forget about cheap stations that "swell" and lose capacity within a month.
Why VIDEX daily power banks are the best choice:
- Magnetic (Magsafe) wireless charging: Forget about constantly carrying wires in your bag! Simply "stick" our W102 or 331 series model to the back of your smartphone and enjoy 15W fast wireless energy transfer without stopping your stride.
- Apple Watch and accessory support: Certain models are equipped with a special wireless zone that can safely charge even your smartwatch.
- Safe lithium polymer chemistry: Integrated protection circuits protect your smart device from overvoltage, short circuits, and overheating.
Never stay disconnected! Buy the power bank that best suits your lifestyle in our e-shop and feel safe in any situation.
Q: How do PD (Power Delivery) and QC (Quick Charge) protocols engineeringly accelerate smartphone charging?
Q: What is the energy loss coefficient when using magnetic (MagSafe/Qi) wireless charging?
Q: Why is the real deliverable capacity (mAh) of a power bank always less than stated on the casing?
Q: How do VIDEX power banks prevent the swelling of Li-Po elements during intensive daily use?
Q: What is the engineering function of the Low-Current mode in portable power banks?
A: These microcontroller-driven protocols allow the smart device to dynamically request a higher voltage from the power supply (9V, 12V, or 20V) instead of the base 5V. This physically increases the charging power up to 20W or 30W, allowing a smartphone's lithium-polymer (Li-Po) battery to charge from 0% to 50% in just 30 minutes.
Q: What is the energy loss coefficient when using magnetic (MagSafe/Qi) wireless charging?
A: Inductive coils create a magnetic field, during the transfer of which 20% to 30% of the energy is physically lost in the air and through thermal radiation. Therefore, wireless charging generates more heat and consumes more of the power bank's cell capacity than a direct USB-C copper cable connection.
Q: Why is the real deliverable capacity (mAh) of a power bank always less than stated on the casing?
A: The indicated capacity (e.g., 10000 mAh) corresponds to the 3.7V base voltage of the internal cells. To charge a smartphone via USB, the inverter must step up this voltage to 5V, which, according to the laws of physics and conversion losses, reduces the real output capacity to approximately 6200-6500 mAh.
Q: How do VIDEX power banks prevent the swelling of Li-Po elements during intensive daily use?
A: The NTC thermistors built into portable batteries continuously measure the cell temperature, automatically reducing the charging current if the heat exceeds +45°C. This thermal safety circuit prevents outgassing in the electrolyte, ensuring the mechanical integrity of the casing and user safety.
Q: What is the engineering function of the Low-Current mode in portable power banks?
A: Standard charging chips automatically cut off the power supply if consumption drops below 50 mA, mistakenly perceiving it as a fully charged device. The low-current mode forcibly maintains an active 5V output, allowing for the uninterrupted charging of micro-consumers, such as TWS wireless earphones or smartwatches.
