TopStar T8 LED Tube 18W/32W Emergency Battery Back Up Lamp 3500k L48T8-835-17P-P2-EM

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The LED EM T8 tube is designed and engineered as an all-in-one general purpose lighting and battery powered emergency backup LED solution. The tube can be switched on as a normal lamp, providing high lumen efficacy and supporting on/off switching operation. The integrated batteries and emergency driver provides a minimum of 90 minutes of light.


  • UL Classified & DLC listed
  • 18W/32W 4ft fluorescent tube replacement
  • Integrated tube: regular T8 lighting and emergency lighting
  • Built-in lithium batteries
  • Reduces maintenance and replacement costs with longer lifespan
  • Easy installation
  • Power Factor >0.9, THD<20%, Triac Dimming
  • Provides 90 minutes of light under emergency use
  • 3500k and 4000k also available


  • Power Consumption: 17W
  • Light Output: 2100 Lumens
  • Color Temperature: 4000K / 5000K
  • CRI: 80
  • Base: Medium Bi-Pin (G13)
  • Length: 48 inches
  • Voltage: 120V-277V
  • Certifications: DLC Approved, FCC Compliant, UL Listed
  • Instant Start
  • Emergency Application: 90 minutes; lamp wattage: 3W; initial lumen: 400 Lumens