If ECO mode is set to “Off”, turn it “On”. You can reduce the decrease in battery power during storage. Setting the ECO Mode

When storing this unit, avoid places with low temperatures, high temperatures and high humidity. A temperature of 0 °C to 40 °C (32 °F to 104 °F) and humidity of 65 % or less is recommended.

When storing this unit for a long period of time, charge it to 60 to 80 % before storing it. If stored for a long time, please check the remaining battery power once every 6 months.