[{"content":" Background # A swollen power bank # While tidying a drawer, I found a power bank that had swollen up like a balloon. It looked dangerous, so I decided to find out how to dispose of it. I forgot to take a photo of the power bank.\nNaha City\u0026rsquo;s website didn\u0026rsquo;t make it clear whether I could put it out as \u0026ldquo;hazardous waste,\u0026rdquo; so I ended up calling to ask directly.\nI called to ask # Apparently, they stopped collecting them as hazardous waste at the end of fiscal year 2024. (Update)\nThe person I spoke to gave me the following options, in order of preference:\nTake it to a participating collection store Contact the manufacturer Have it collected at city hall (Environmental Policy Division counter, 7th floor of the main Naha City Hall building) My situation # However, swollen batteries like mine aren\u0026rsquo;t accepted by participating collection stores. I\u0026rsquo;d also bought it at a 100-yen shop, so I didn\u0026rsquo;t know who the manufacturer was.\nThat left taking it to city hall as my last resort.\nCollection at Naha City Hall # Getting there # The nearest station to Naha City Hall is Kencho-mae Station on the Okinawa Urban Monorail. Getting to Naha City Hall\nLocation Apparently, power banks are collected at the Environmental Policy Division counter on the 7th floor.\nIt felt a bit like a high school staff room or a university student support office, which made me a little nervous, but I got through it by acting as though I was lost.\nHow it went # Me: \u0026ldquo;Excuse me, I heard you collect power banks here.\u0026rdquo;\nStaff: \u0026ldquo;Do you have any ID showing that you live in Naha City?\u0026rdquo;\nMe: \u0026ldquo;Yes.\u0026rdquo; (I show my My Number card.)\nStaff: \u0026ldquo;Thank you.\u0026rdquo; (They take the power bank.)\nThat was it.\nWrapping up # Make sure you get rid of yours before it explodes, too.\nReference: https://www.city.naha.okinawa.jp/kurasitetuduki/gomirisaikuru/gomi/katei/KHAITAIyuugaigomi.html (accessed 2025/7/23)\nUpdate (2026/07/12) # Apparently, collection as dangerous waste began in March 2026. Follow the latest rules and dispose of it safely.\nhttps://www.city.naha.okinawa.jp/kurasitetuduki/gomi-recycling/1001934/1010979.html\n","date":"28 August 2025","externalUrl":null,"permalink":"/en/posts/how-to-dispose-mobilebattery/","section":"Posts","summary":"","title":"I disposed of a swollen power bank","type":"posts"},{"content":"","date":"28 August 2025","externalUrl":null,"permalink":"/en/posts/","section":"Posts","summary":"","title":"Posts","type":"posts"},{"content":" Projects View my projects Posts Read my posts About About me ","date":"28 August 2025","externalUrl":null,"permalink":"/en/","section":"tamasyun","summary":"","title":"tamasyun","type":"page"},{"content":" Introduction # I\u0026rsquo;m an ordinary university student in the Faculty of Engineering at a regional national university in Japan.\nI update this site whenever something comes to mind.\nLinks # GitHub Twitter / X About this site # Verification I\u0026#39;m not a robot Robots, click here Read posts View my projects Take a detour View achievements ← Back 403 Forbidden Access denied. Back ","externalUrl":null,"permalink":"/en/about/","section":"About","summary":"","title":"About","type":"about"},{"content":"","externalUrl":null,"permalink":"/en/authors/","section":"Authors","summary":"","title":"Authors","type":"authors"},{"content":"","externalUrl":null,"permalink":"/en/categories/","section":"Categories","summary":"","title":"Categories","type":"categories"},{"content":"","externalUrl":null,"permalink":"/en/series/","section":"Series","summary":"","title":"Series","type":"series"},{"content":"","externalUrl":null,"permalink":"/en/tags/","section":"Tags","summary":"","title":"Tags","type":"tags"},{"content":"","externalUrl":null,"permalink":"/en/projects/","section":"Things I've built","summary":"","title":"Things I've built","type":"projects"}]