The charging efficiency of lithium ion batteries is impacted significantly at temperatures below 40°F / 4°C, with the potential for it to stop accepting a charge entirely below -4°F / -20°C.
Some of the symptoms might include the battery not charging or draining quickly (e.g., 100% to 80% rapidly) and not getting the same level of charge even on sunny days. This is situational and can improve as higher temperatures role in.
Aosu suggests these tips for using your cameras in the winter:
Indoor Charging: Install the camera in an accessible spot for easy removal and wired charging indoors.
Lower Sensitivity: Adjust detection settings to reduce unnecessary recordings and save power.
Solar Panel Check: Ensure the solar panel is connected and unobstructed for better charging.
Battery Check: Test battery health by placing the device indoors at room temperature for two hours, then charge. If it reaches 100%, the battery is fine.