The external powerbanks are an addition to smartphones of the Huawei P series. They feature a plain and elegant design and a tailor-made, discreet range of colours. Ultrathin at only 8 or 9.3 mm, they offer a good balance between mobility and performance. The polycarbonate case inhibits dints and scratches; tests have shown that the base withstands up to 100,000 abrasions thanks to its metal oxidation processing. High-performance soft lithium polymer batteries assure reliability.