One last thought on this subject is the concern of running a lift while blocked up and free wheeling. There is a hefty voltage spike when the current is removed from a high rpm running motor and some MFG's do have a warning in the service manuals describing such voltage as some can reach upward toward a 1000 or more. Most later model trucks are equipped with a flyback diode that eliminates this. I have seen a few ev-1 systems zapped because of winding one up while blocked.

As far as load test is concerned i have always performed the load test using hydraulics as they are the amp hog of most lifts including this one. I do not like to see much over 3 volt drop in voltage when performing a deadhead check. Low battery voltages can lead and will lead to card failure eventually. Lower than voltage rated will lead to heat thus smoke. A battery going out will most time drop of 5+v when checked on "full" charge with hydraulics dead headed. You will also have other tell tell signs such as rotten egg smell when lift is charging and or running and deformed tops on the cells. Just my 2 cents worth.