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Emergency Lighting and Alarm System Batteries

At Midstate Battery, we carry a variety of Power-Sonic SLA batteries, including an assortment of capacities for Emergency Lighting and Alarm Systems, Exit Lights, and Hand Held Lights.


SLA Battery Features:

  • Sealed/Maintenance Free
    The value regulated, spill-proof construction allows trouble-free, safe operation in any position. There is no need to add electrolyte, as gasses generated during overcharge of this battery are recombined in a unique “oxygen cycle.”
  • Long Service Life
    Under normal operating conditions, four or five years of dependable service life can be expected in stand-by applications, or between 200 and 1,000 charge/discharge cycles depending on the average depth of discharge.
  • Valve Regulated Design
    These batteries incorporate a series of one-way low-pressure valves. These self-sealing valves allow venting of any excess gasses that may be produced in the battery due to severe overcharging. Valve regulated batteries should never be recharged inside a sealed container.
  • Deep Discharge Recovery
    Special separators, advanced plate composition, and carefully balanced electrolyte system have greatly improved the ability to recover from excessively deep discharge.
  • Design Flexibility
    Batteries may be used in series and/or parallel to obtain choice of voltage and capacity. Due to recent design breakthroughs, the same battery may be used in either cyclic or standby applications. Over 60 models are available to choose from.
  • Lead Calcium Plates
    Heavy-duty lead calcium plates provide an extra margin of performance and life in both cyclic and float applications and give unequaled recovery from deep discharge.
  • Compact
    Power-Sonic batteries use state-of-the-art design, high-grade materials, and a carefully controlled plate-making process to provide excellent output per cell. The high energy density results in superior power/volume and power/weight ratios.
  • Economical
    The high watt-hour per dollar value is made possible by the materials used in a sealed lead-acid battery: they are readily available and low in cost.
  • Rugged Construction
    The high impact resistant battery case is made of non-conductive ABS plastic to UL94-HB. This material imparts very good resistance to shock, vibration, chemicals and heat. Certain models feature flame retardant cases/covers to UL94 V-O.
  • Operation in any Orientation
    Power-Sonic’s SLA batteries can be discharged in any orientation, without reduction in performance or leakage of electrolyte.
  • High Rate Discharge
    Low internal resistance allows discharge currents of up to ten times the battery’s rated capacity. Relatively small batteries may thus be specified in applications requiring high peak currents.
  • Long Shelf Life
    A low self-discharge rate allows storage of fully charged batteries for extended periods of time before charging is required. Lower storage temperatures further enhance shelf life characteristics.
  • Wide Operating Temperature Range
    Power-Sonic batteries may be discharged over a temperature range of -40°C to +60°C (-40°F to +140°F) and charged at temperatures ranging from -40°C to +50°C (-40°F to +122°F).


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Call Midstate Battery today at (860) 243-0646 to speak with one of our battery specialists!