There’s nothing more annoying than having your battery on your smartphone, tablet or e-reader die on you when you’re out and about. Relief is provided in the form of powerbanks: compact, pocket-sized spare batteries. XLayer, the specialist for mobile data and energy storage from Unterhaching, has now presented three practical, new models at the IFA.
From exceptionally handy to exceptionally powerful
The latest generation from XLayer’s X-Charger range is thinner and lighter. It comprises three mobile batteries:
- The X-Charger 5,000 mAH (capacity in milliampere hours), 126 x 71 x 12 mm, 135 g, charging time: 2.5 to 3.0 hours, charge indicator in percent
- The X-Charger 10,000 mAH, 136 x 71 x 16 mm, 210 g, charging time: 5.0 to 6.0 hours, charge indicator in percent
- The X-Charger 19,200 mAH, 160 x 82 x 22 mm, 400 g, charging time: 10.0 to 11.5 hours, charge indicated through four LED lights, integrated torch
All devices work with lithium polymer accumulators and have two USB ports each, enabling two devices to be charged at the same time. The powerbanks themselves are also charged via USB cables; one USB to micro USB cable is included with delivery.
As a side note, in order to gauge how often a mobile device may be charged with a powerbank, it is not enough to simply divide the capacity of the powerbank by the capacity of the device’s battery. That is to say, a smartphone with a 2,000 mAH battery cannot be charged four times with a 10,000 mAH powerbank. This is because voltage also plays a role. The voltage of the device’s battery is lower (usually between 3.6 and 3.8 volts) than that of the USB connection (5 volts). This means that, when charging, the voltage must be increased and then decreased again – which costs energy. For this reason, it is more realistic to assume three to three and a half charging cycles for the example named above.