Here's an odd question. I want to reduce my clutter to a bare minimum for some travels. I'm already going to have an iPad with its requisite cable and AC wall power converter. Has anyone confirmed that a power unit like that can safely charge the RX1? I know, in most cases, those voltage converters regulate the output to what is being drawn by the device, so the limitation is normally that you can't charge a more power-hungry device, with a smaller capacity AC unit. Thanks.