Does the Casio ADE95100MP support connecting to external MIDI devices for expanding its functionality?

The Casio ADE95100MP does not have built-in MIDI connectivity for external MIDI device connection. Its functionality is mainly focused on power supply rather than MIDI interface expansion.

Can the Casio ADE95100MP operate on battery power for portable use, and what is the typical battery life?

The Casio ADE95100MP itself is a power supply adapter and does not operate on battery power. Keyboards that use this adapter may operate on batteries, but this adapter is for mains power supply only.

What is the maximum polyphony of the Casio ADE95100MP and how does it affect complex musical arrangements?

The Casio ADE95100MP supports a maximum polyphony of 8 notes. This means it can play up to 8 notes simultaneously, which is suitable for simple to moderately complex musical arrangements but may limit very complex layering of sounds.