“Next time I will buy a music player, I will definetely look for replaceable batteries”
You can look for players with an easily swappable battery, but if things don’t change, you will only find basic players without a display like the Slotmusic player or Slotradio To Go player, low quality players, or very old low capacity players. I keep hoping things will change, but until then I have an external usb battery pack that uses AA nimh batteries.
