How many Pneumatics resovoirs are we allowed to use on our robot? Also are we allowed to connect to old batteries together and make a connection. For example connect two batteries that would still be 7.2 volts, but it would combine to hold 6000 milliamps. Is this possible.
There is no limit to the amount of reservoirs that you can use.
No, this is strictly prohibited. You may only use a maximum of two VEX legal batteries; one directly connected to the Cortex, and one directly connected to a Power Expander that is directly connected to the Cortex.