Commercial Fixed Wing
Confusion
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Hazardous Material Violation
General None Reported / Taken
Human Factors; Procedure
Lithium Collapsible wheelchair checked in at ticket counter.  Unclear if customer bypassed [company] rep. Lithium battery not removed.No pilot notification form.Wheelchair was collapsed.Wheelchair was delivered by [a different company] to baggage make-up and accepted.Issue was identified while loading.I have worked three other unreported instances with collapsible wheelchairs at gate area and customers are advising that they were allowed on a previous trip in.  This issue continues to surface.
Gate agent reported a Lithium Collapsible wheelchair was checked in at the ticket counter; without the Lithium battery being removed.