How often do I have to replace the batteries for HPS Fence automatic chicken coop door and which

How often do I have to replace the batteries for HPS Fence automatic chicken coop door and which

  1. Normally, the new batteries can be used for more than 6 months.

    When red light flashes frequently, please replace batteries.

    Please use high quality batteries. Avoid rechargeable batteries as they can dip in voltage in colder weather.