The author decided to repair old, rechargeable bike lights that only worked for five minutes after a full charge. This project seemed feasible as it likely only required a battery replacement. They visited a local queer makerspace for tools and assistance, emphasizing the benefits of a community environment for learning.The repair began by cutting open the silicone casing of the light, revealing the circuit board beneath. Next, they removed the necessary screws to extract the circuit board, being careful to only remove a few to avoid losing them. The old battery, identified as a LIR2477, was then desoldered from the circuit board, a new skill learned through an iFixit guide and friends' advice.After identifying the battery model, primarily with the help of an LLM, two replacement batteries and silicone glue were ordered from AliExpress for about $20 CAD. Once the parts arrived, the new batteries were soldered into place. The screws were then reinserted, though some were lost due to their small size. Finally, the light's silicone casing was glued back together, albeit somewhat messily, and clamped to dry.After a 24-hour curing period for the glue, the repaired bike lights were tested and found to be working. The author noted that they hadn't yet needed to recharge them, and were awaiting a new Mini USB cable to fully test the battery life. Despite some aesthetic imperfections in the re-glued casing, the author found the repair process rewarding and a successful learning experience in basic electronics.