Charging error 5 on roomba 560- battery not working - after 4 calls and 4 different answers from irobot they tell me now I need a new battery and power supply. is there a way to test the power supply? I installed a friends battery in my robot and it worked fine so I know it's not the robot (which is what they told me I needed to replace on the 3rd call). I've tried resetting, taking the battery out, charging directly without the home base, etc. Is there anything left to try? Should I go back with irobot batteries or do the generic work fine?

Vacuums - iRobot - Roomba 560 Robotic Vacuum