VEVOR Solar Fence Charger, 1J 10kV Solar Powered Fence Charger, 1.86 Miles Range, Electric Fence Energizer Kit, Keep Out Predators, 3 Days Runtime, for Livestock, Poultry, Garden Protection

Lithium batteries will severely degrade in such low-temperature environments, with reduced capacity and decreased charging efficiency.

Cloudy days can charge the battery slightly, but rainy days won't work. In densely wooded areas, check if sunlight reaches the solar panels. If this answer does not resolve your current issue, please contact us again for assistance.

this device contains a lithium battery.