Found a solution without ripping hands apart too much. Struggled for hours to get the battery strap latched and beat hands up bad, and still unsuccessful. Was getting ready to bring to dealer to have him reinstall.
Solution?? After placing battery but before attaching cables put the strap to port side of battery and hook it to the tray, and then lift it while it’s attached over the battery. Then connect your battery cable. Took 5 minutes to do two machines.