Xiaomi is recalling nearly 147,000 units of its 33W power bank (model PB2030M1) due to safety concerns. The 20,000mAh devices, sold mainly between August and September last year, contain defective 126280 battery cells that may damage smartphone batteries under prolonged use or simultaneous charging. Although no accidents have been reported, Xiaomi is offering a full refund of 159 yuan (about USD 22) for returned units. The recall follows growing safety concerns in Asia after similar incidents with other brands.