Fully integrated, 10 W, wireless charging receiver (bq51025) and transmitter (bq500215) enable waterproof and dustproof portable designs and accelerate charging for 1- and 2-cell Li-Ion batteries. Charging solution is also compatible with any 5 W, Qi-compliant products. While 3.60 x 2.89 x 0.5 mm receiver supports programmable 4.5–10 V output and achieves up to 84% charging efficiency at 10 W (paired with bq500215), 9 x 9 mm, fixed-frequency transmitter features foreign object detection.