EnerSys PowerSafe 4DSG-09

8V 595Ah Lead-Acid Battery for Switchgear / Utility / Telecom
Data Center, Uninterruptible Power Supply, Switchgear
Long Shelf and Cycle Life, High Rate Power Delivery, 100% Initial Capacity
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The PowerSafe D range of batteries are designed for telecommunications, utlity and switchgear applications.

PowerSafe DSG battery models feature a lead-calcium design that reduces the maintenance (watering intervals) associated with lead-antimony batteries. This makes the DSG battery ideal for challenging utility switchgear applications. Its 0.25 inch positive grids are one of the thickest in the industry, making it an excellent long discharge battery and ideally suited for the complex duty cycle requirements of the switchgear application. The multi-cell construction helps to minimize floor space. PowerSafe DSG batteries also have individual posts for each cell to help ease and simplify the integration of battery monitoring and test equipment used in routine maintenance inspections.

All PowerSafe D batteries employ a proven Slide-Lock post seal that allows for natural plate growth over time without degrading the seal. The innovative tongue-and-groove jar-to-cover seal provides reliability with a robust airtight seal.

  • Capacity Range: 310 – 780Ah
  • Flat plate, lead-calcium grid alloy, well suited for long duration float applications
  • Proven Slide-Lock™ post seal design
  • Positive and negative posts on each cell allow for monitoring of individual cells
  • Standard UL94 V-0 flame retardant cover and container
  • NEBSTM level 3 certified for systems with a nominal voltage under 80V
  • Application: suitable for installation in network telecommunication facilities
  • 20 year life expectancy in float service at 77ºF (25ºC) ambient temperature
  • Operating temperature: 32ºF (0ºC) to 104ºF (40ºC)
  • Recommended temperature: 68ºF (20ºC) to 86ºF (30ºC)


Volts: 8V
Battery Capacity: 595Ah
Capacity Rate: 8 hr rate to 1.75 volts/cell @ 77°F (25°C)
Length: 42.4 CM
Width: 40.6 CM
Height: 57.6 CM
Weight: 224 KG


  • 0.25” thick positive plates provide long discharge rates and long life
  • Lead plated copper posts - one positive and one negative post per cell
  • Cover - standard PVC UL94 V-0 LOI>28%
  • Container - standard PC UL94 V-0 LOI>28%
  • Separator - microporous phenolic with “Vitrex” glass fiber retainers
  • 1.215 specific gravity nominal at 77ºF (25ºC)
  • Intercell connectors - lead-plated copper, optional tin-plated copper
  • Flame arrestors - included for increased operational safety
  • Proven Slide-Lock™ post seal design


  • Switchgear
  • Utility
  • Telecom


  • The management systems governing the manufacture of this product are ISO 9001:2008 and ISO 14001:2004 certified