The Energy Focus RedCap® Emergency Battery Backup is an all-in-one general purpose lighting and battery-powered emergency backup TLED solution. The tube acts as a normal lamp, providing 145 lm/W efficacy and supporting on/off switching operation. Upon loss of power, the integrated batteries and emergency driver provide an illumination duration minimum of 90 minutes of light. RedCap® has a full brightness output of 1595 lumens with an initial battery light output of 1200 lumens on the battery. The maintained battery light output is ~600 lumens. Available in 3500K, 4000K, and 5000K color temperatures.