Replacing the old battery on rechargeable bike lights

An author successfully repaired decade-old rechargeable bike lights by replacing the worn battery, using a soldering iron at a local makerspace. The repair process involved opening the silicone casing, removing screws to access the circuit board, desoldering the old battery, and replacing it with a new one. The author documents this DIY electronics repair project as a learning experience in fixing old electronics rather than discarding them.