Identifying when your solar light battery needs replacement is essential for maintaining optimal performance. Here are the key signs that your battery may be failing:

1. Reduced Runtime

• Description: If your solar lights are not staying illuminated for as long as they used to, even after a full day of charging, the battery may no longer hold a sufficient charge.
• Action: Monitor the duration of light output and compare it to the battery’s expected runtime. A significant decrease indicates battery wear.

2. Inability to Hold a Charge

• Description: Lights that fail to turn on at night or only operate briefly after sunset suggest that the battery cannot retain the charge from the solar panel.
• Action: Test the battery with regular batteries to confirm if the issue is with the battery’s ability to hold a charge.

3. Physical Damage or Swelling

• Description: Inspect the battery for physical signs of damage, such as swelling, leaks, or corrosion. These issues can pose safety risks and indicate that the battery needs replacement.
• Action: Replace the battery immediately if any physical damage is observed.

4. Illumination Does Not Improve After Charging

• Description: If the illumination does not improve after charging the solar lights for a day or two in direct sunlight, the battery may be faulty.
• Action: Ensure the lights are placed in optimal sunlight for charging. If there is no improvement, consider replacing the battery.

5. Testing in Other Devices

• Description: Try using the battery in another functioning solar light. If the battery does not work in another device, it confirms that the battery is defective.
• Action: If the battery fails in other devices, it is time to replace it.

6. Age of the Battery

• Description: Rechargeable batteries in solar lights generally have a lifespan of 1 to 2 years. As the battery approaches or exceeds this age, it may need replacing, even if it seems to work.
• Action: Consider replacing the battery if it is nearing the end of its expected lifespan.

By keeping an eye on these signs, you can ensure that your solar lights continue to perform effectively and reliably.