Power Sonic 4 Volt 4.5 Ah Battery, PS-445

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The Power Sonic PS-445 (4 Volt - 4.5 Amp Hour) is a compact general purpose Valve Regulated Lead Battery, Absorbed Glass Mat (AGM) battery boasting excellent performance with an estiamted 5-year design life. The PS-445 is an excellent battery for custom designs, medical equipment and devices, security systems and battery back-up. 

Uses / Applications

The Power Sonic PS-445 is commonly used in the following applications:

Security Systems, Alarms

Emergency Lighting

Exit Lights


General Purpose

Custom Battery Designs


Features of the Power Sonic PS-445:

Absorbed Glass Mat (AGM) Technology

Valve Regulated Lead Acid (VRLA) Battery

Spill-proof, Maintenance-Free Construction

Rugged Vibration and Impact Resistant ABS Case

Gas Recombination Technology

5-Year Design Life


The Power Sonic PS-445 holds the following approvals and certifications.

DOT, IATA, FAA and CAB certified

Approved for air transportation

UL Recognized

ISO9001:2015 Approved - Quality Management Systems


Length: 1.89" (50mm)

Width: 2.09" (34mm)

Height: 3.70" (100mm)

Height Over Terminal: 3.86" (105mm)

Tolerances are +/- 0.04 in. (+/- 1mm) and +/- 0.08 in. (+/-2mm) for height dimensions. All data subject to change without notice.

Terminal Options

F2 Faston

Quick Disconnect Tabs



Nominal Voltage

4 Volts (2 Cell)

Nominal Capacity

20 Hr (225 mA to 3.50 Volts) - 4.5 Ah

10 Hr (420 mA to 3.50 Volts) - 4.2 Ah

5 Hr (765 mA to 3.40 Volts) - 3.8 Ah

1 Hr (2.7 A to 3.00 Volts) - 2.7 Ah

Internal Resistance (Approximate)

15.0 Milliohms

Max Short-Duration Discharge Current (10 Seconds)

45.0 Amps

Shelf Life (% of nominal capacity at 68° F (20° C)

1 Month - 97%

3 Month - 91%

6 Month - 83%

Operating Temperature Range

Charge: 5° F (-15° C) to 122° F (50° C)

Discharge: -4° F (-20° C) to 140° F (60° C)

More Information
Part Number PS-445
Battery Voltage 4 Volt
Amp Hour Rate 4.5 Ah
Battery Chemsitry SLA (Sealed Lead Acid)
Terminal Type F2
Length 1.89"
Width 2.09"
Height 3.7"
Height Over Terminal 3.86"
Warranty 6 Months
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