Staff heard noises and hissing from wall mounted battery charger and visually saw smoke.Staff unplugged charger from outlet.Smoke alarm was triggered.Code red was called, security and engineering arrived, and while speaking to staff, a loud "explosion" was heard from the wall charger assembly, which contained one battery pack.Engineering grabbed the fire extinguisher and doused the charging assembly and battery.The fire department arrived and the battery and charger was removed.No injuries were reported.Per fda h0260 01: any actions taken by the manufacturer/facility: manufacturer was notified and will replace all 3.0 series battery packs immediately.Charging stations in remote, rarely occupied areas have been removed.All 3.0 series battery packs have been removed from service.All other batteries have been visually inspected by is dept.Fire extinguishers have been added beside all remaining charging stations.Event has been reported internally to (b)(6) and also fda medwatch.
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