Li-Ion Boe-Bot Rechargeable Power Pack?
Parallax used to sell a rechargeable battery pack for the Boe-Bot https://www.jameco.com/z/28988-Parallax-Li-ion-Boe-Bot-Power-Pack-Charger_2153422.html. Unfortunately though it's no longer in production.
Is anyone aware of a similar battery pack that is still available today? I've looked around but haven't found anything quite like it.