Careful on these Volta free units. Been using them for the last year without issues. Unit overheated here in Seattle today, charged for about hour and unplugged unit. Went to grab my 1067348-00-B adapter and was hot as hell. Couldn’t unplug to adapter from the handle. After yanking super hard, and looking in the plastic housing melted/fused together. Thankfully yanked while the plastic was soft still, if it cooled down I don’t think I would have got my adapter back.