# Genie opener with both lights flashing red to yellow: the backup battery is dead

Source page: https://garagedoorscience.com/code/genie-error-codes/round-red-to-yellow-flashing-long-red-to-yellow-flashing

## The backup battery is dead

The backup battery has run flat.

**You can check this.** Let it charge for 48 hours. If it doesn’t hold a charge, replace the battery.

From the maker’s manual:
- Genie manual for models 1035, 2033, 2035, 2036, 2053, 2055, 3033, 3035, 3053, 3055, 7033, 7035, 7053, 7055, PDF page 18: https://www.geniecompany.com/data/products/genie_owners-manual_750-500_eng.pdf

Garage Door Science isn’t affiliated with the opener makers LiftMaster, Chamberlain or Genie. Each meaning is our summary of the maker’s own manual, which we link.