text: Battery for deep brain stimulation depletion in Parkinsons Disease and dystonia patients a systematic review Deep brain stimulation DBS therapy for Parkinsons Disease PD and dystonia is associated with the possibility of both minor and major complications One possible side effect is the depletion of implantable pulse generator IPG battery and the associated sudden recurrence of PD or dystonia symptoms which can be potentially life threatening Delayed or postponed outpatient visits due to COVID 19 may be a risk factor of battery end of life consequences To analyse the clinical outcomes in reported PD and dystonia patients treated with DBS who as a result of the sudden depletion of the neurostimulator battery developed life threatening symptoms The databases of PubMed Scopus EMBASE and Google Scholar were searched using pre established criteria A total of 244 articles was found of which 12 met the adopted criteria Selected papers presented a total of 17 case reports of DBS treated patients 11 with PD and six with dystonia who had depleted IPG batteries and due to rapid worsening of PD dystonia symptoms required urgent hospital admission IPG battery replacement was the only effective treatment in the majority of cases IPG battery depletion can result in fatal outcomes Sudden recurrence of PD or dystonia symptoms in patients treated by DBS can be potentially life threatening so scheduling the replacement of a discharged IPG battery should not be postponed The COVID 19 pandemic should alert staff at emergency neurology and movement disorders wards not to postpone the visits of patients with an implanted DBS system 