The lift is locked out because the battery is either still flat or it thinks it's still flat and it is not seeing the threshold voltage to re set the BDI. Try plugging the charger in for 5-10 mins and then up plug the charger and plug the battery straight in to see if it re sets the BDI. If this oes not work you may need to re set the the lift lock out % setting with the LISA unit or the BDI may be faulty or you have a battery fault.
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