電動アシスト自転車バッテリーから18650リチウムイオンバッテリーを入手Get 18650 Lithium Ion Battery from Electric Bicycle Battery

Introduction Lithium-ion battery is a dangerous battery. Please understand the danger of the lithium-ion battery in advance, and disassemble and use it at your own risk. The battery pack of an electrically assisted bicycle often contains an 18650 lithium-ion battery. The 18650 that can be used again is often contained in the battery packs that are sold as junk items. The battery that I disassembled this time seems to have deteriorated to some extent, but it contained 21 usable 18650 lithium-ion batteries. I bought the battery pack for about 5$, so it costs about 0.24$ per battery.