Security policy(edit with the Customer Reassurance module)
Delivery policy(edit with the Customer Reassurance module)
Return policy(edit with the Customer Reassurance module)
Smart LED display: the mode design for displaying the power level of the power bank. Real-time and accurate status of the remaining power helps you easily manage the operation of the power.
Wide compatibility: unlike most power banks on the market that are unable to charge low-power accessories, the DrPhone external battery can not only work with all phones and tablets, but also with your smaller devices like AirPods.
20000mAh high capacity: The large capacity of the 20000 mAh power bank ensures you can charge your smartphones and tablets multiple times. Despite the large capacity, the compact power bank weighs only 375 grams. It easily fits in any pocket or bag, making it the perfect portable charger for travel, on the plane, or anywhere your phone needs charging.
4 ports : Compatibility at its best, not only ready to charge almost all USB devices including laptops, tablets, smartphones and more, but also portable chargers can be charged by all cables (USB-C). It supports 2 USB and 2 USB-C outputs.
18 W Total Tri-Output & PD 18W Fast charge: The power bank with 18 W PD 3.0 USB-C port, 18 W QC 3.0 USB-C port and 18 W USB port for simultaneous charging of 3 devices with a combined power of 18 W (all 3 outputs support 18W PD fast charging).
100% safe protection: The portable power bank uses high-quality lithium-ion batteries, along with multiple intelligent protection technologies, to keep your devices safe from overvoltage, overcharge, overcurrent and short circuit, etc.
Features:
Specifications:
Explanation about mAh:
Difference between battery capacity and actual capacity
One third of the capacity is lost. The technical explanation is complicated, but the rule is simple: the actual capacity of a power bank is about two thirds of the stated capacity. The rest disappears during power conversion or is lost during charging, especially as heat. Power banks with a battery of 10,000 mAh or 20,000 or 30,000 mAh actually have only 6,660 mAh or 13,330 mAh or 17,500 mAh capacity.
The reason power banks have two thirds of the stated capacity is largely because the power must be converted. For example, the voltage of the power bank battery is 3.7 ampere, but to charge a smartphone or tablet the power bank must boost the voltage to 5 ampere. By boosting that voltage, only 7,400 mAh remains from 10,000 mAh, a quarter less. This applies to every power bank, regardless of capacity or quality. During charging, about 10 percent of the remaining energy is lost. That 7,400 mAh is then only 7,400 x 0.9 = 6,660 mAh. Much of that energy is lost as heat: that is why your smartphone often gets warm during charging.
