Installing Player on Pio

Hey everyone!!! Hope you´re all doing well.

First of all I would like to explain that I wasn´t able to work in my computer in this past holy week because a friend was trying to fix the problem that I have with the video card.
Anyway, today I went to the lab with Laura and tried to install Player on Pio (the outdoor robot) but we found several problems.
The first one is that the robot was unable to download some files required to install the packages needed to run player. (I think Laura has already found a way to solve this)
And the other problem and main one is that the robot keeps shutting down after 15 minutes or so that we work with it. We tried to charge the batteries but one of the chargers disappeared from the lab and the other one doesn´t work. This means we have to charge each battery one by one and they told us that the charging time is around 8 to 10 hours. And maybe some batteries are not quite efficient anymore. So if anyone has seen the other charger please let us know. And maybe it would be precise to acquire some new batteries in order to work with the robots.
Regards!