The roughly ten minutes the fully charged battery offers sufficient time for several play sessions, however there are circumstances, such as multiple dogs, when you might need more time. We hope to offer options in batteries on our website soon, but in the meantime you might find a compatible battery at your local hobby store or online.
For a compatible AC to DC power adapter look for a 12V, 3A, adapter with an XT60 Plug as shown in the blow-out in the image below.
Click the image to open a new tab with more information on each product - NOTE these are only samples of compatible options, not necessarily a recommendation. This is one example of a compatible battery with a larger capacity.
You might consider getting an AC / DC power adapter.