I listen to dozens of podcasts, and I usually have one playing while I’m working on electronics projects in my workshop. The speaker in my iPhone is ok, but I wanted to get some kind of external speaker to give it a bit more volume.
BlitzWolf kindly sent me a BW-F4 Bluetooth speaker to use in my workshop. I’m not really into music (I’d rather spend my time listening to something that teaches me new things) so I can’t give an opinion on its sound fidelity, but so far it’s been great for listening to podcasts.
The BW-F4 charges by USB and can run from battery for most of the day.
It’s available online for about US$55.