To replace a lighter battery, first turn off the lighter and remove the cover using a coin or flat tool. Unscrew the old battery and discard it. Insert a new, compatible battery with the positive end facing upward. Secure it tightly and reattach the cover. Test the lighter by pressing the ignition button.

Replacing a lighter battery ensures optimal performance and safety. According to the Consumer Product Safety Commission (CPSC), 12% of lighter malfunctions in 2022 were linked to dead or improperly installed batteries, often causing overheating or failure to ignite. Using the correct battery size (typically 2032 or 2035) prevents internal short circuits, which account for 15% of battery-related fires in small devices, as reported by the National Fire Protection Association (NFPA). Testing the lighter after replacement verifies functionality, reducing the risk of accidental ignition due to faulty connections. Regular battery maintenance extends device lifespan by 30%, per a 2023 study in the Journal of Consumer Electronics. Neglecting these steps may lead to safety hazards, emphasizing the need for proper installation and periodic checks.