DrPhone PBM2 - 20,000mAh - Powerbank – Portable charger – 2x USB 2A/2.1A – 2x input Micro USB & USB C – LED Display & LED light

Powerbank: Are you often travelling or on the go and have no access to a power source to charge your phone or tablet? DrPhone® introduces the Mini size DrPhone PBM3. The perfect solution to safely and quickly charge tablets, smartphones and all your other devices.

USB ports & 20,000mAh: 2x 2.1A gives you a stable charging option and is better for your battery life.
With the 20,000 mAh 3.7V high capacity you can enjoy your device for a long time.

LED light: Additionally, the PBM2 has an LED light in the centre. So you can turn on the light in the evening if you are busy with something or need light.

Features:
- 20,000 mAh
- 2 USB inputs 2.1A Dual
- LED light

Specification:
- Battery type: Li-polymer Battery
- Input: Type C
- Input: Micro USB
- Output interface: dual USB 1 USB 2A & 1 USB 2.1A
- Battery capacity: 20000mAh
- Charging devices: For Tablet, Drones, Smartphone, Camera etc
- Shielding material: Plastic
- Size: 84*87*28mm
- LED lamp lighting: Yes
- Output Voltage: 5V 2.A / 5V 2.1A
- Input voltage: 5V/2.1A

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 powerbank is about two thirds of the stated capacity. The rest disappears during power conversion or is lost during charging, especially as heat. Powerbanks with a battery of 10,000 mAh or 20,000 or 30,000 mAh actually only have 6,660 mAh or 13,330 mAh or 17,500 mAh capacity.

That powerbanks have two thirds of the stated capacity is largely because the power must be converted. The voltage of the powerbank battery is for example 3.7 amps, but to charge a smartphone or tablet the powerbank must raise the voltage to 5 amps. By raising that voltage, from 10,000 mAh only 7,400 mAh remains, a quarter less. This applies to every powerbank, regardless of capacity or quality. During charging, about 10 percent more 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.