Battery will not charge; the charger LED stays off or blinks rapidly when the battery is inserted.

Safety first: Do not use or charge a swollen, leaking, or hot battery.

• Check power source: Verify the wall outlet works. Try another outlet.
• Inspect charger and battery contacts: Look for bent or corroded pins. Clean gently with a dry cloth.
• Observe charger LED codes: Refer to the Insignia manual for LED meanings. Rapid blinking often indicates a battery fault.
• Cool down battery: If the battery is warm from use, let it cool for 30–60 minutes before charging.
• Swap components: If possible, test with another Insignia charger or battery to determine which component is faulty.