This is a blog post about replacing two coin-cell batteries in a pair of rechargeable bike lights that are ten years old. The author has minimal electronics experience. The lights are unnamed, the batteries turned out to be LIR2477s, and the whole project cost about $20 CAD in parts from AliExpress. The repair worked. That is the entire plot. What makes it worth reading is the texture of the process. The author cuts open a silicone housing "in a haphazard way," consults the iFixit desoldering guide, gets confused by a welded tab on the battery, loses screws on the makerspace floor, and glues everything back together imperfectly. The finished product looks rough. It works anyway. This is what real repair looks like for most people — not a pristine iFixit teardown video, but a series of semi-informed decisions that happen to land. The community makerspace is load-bearing infrastructure here. The author names it as a queer makerspace where they're a member, and credits friends Lee and Lauria for soldering advice. The soldering iron, the workspace, the human knowledge — none of this was purchased individually. It was accessed through membership in a shared resource. This is the repair economy working as designed: pooled tools, pooled expertise, low barrier to entry. The LLM moment is honest and interesting. The author couldn't identify the battery from its partially obscured label, used an LLM to guess "LIR2477," verified the guess visually, and explicitly says they'd prefer to learn non-LLM methods. This is a useful data point about how people actually use these tools — as a last-resort lookup when search and community knowledge hit a wall, not as a replacement for learning. The post deliberately avoids safety advice, acknowledging the author doesn't know enough to give any. This is responsible in a way that overconfident tutorials often aren't. The desoldering involved a lithium battery, which can be dangerous if overheated. The author took cooling breaks, followed a guide, and asked for help. No one got hurt. The implicit message: you can do this, but do it with support and humility. The repair is not beautiful. The glue job is uneven, some screws are missing, and the author still hasn't confirmed the battery lifetime because the replacement Mini USB cable hasn't arrived yet. But the lights turn on and the author rides at night with them. Function over aesthetics, participation over perfection — this is what lowers the barrier to a culture of repair rather than replacement. The post is a small, specific, well-told story about fixing a thing. It is not trying to be a manifesto. It succeeds precisely because of that modesty.