Dead Pentair Prowler 930 - looking for cordless

Welcome to TFP.

Sorry, no one appears to have advice for your situation.
 
I'm pleased with the Beatbot Aquasense. I purchased the lower price model for $1,000. The newer ones are over $2K.

Here's my recent thread on my pool robots:

Thread 'My Robots Review - Beatbot and Bettabot' My Robots Review - Beatbot and Bettabot

I think there are several good options that are cheaper, but I can only speak to my experience. The Beatbot Aquasense is super easy to set up out of the box and very simple to maintain.

Good luck in your search and please let us know what you eventually purchase.