Power Sonic 4 Volt 9 Ah Battery, PS-490s

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The Power Sonic PS-490 (4 Volt - 9 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-490 is an excellent battery for custom designs, medical equipment and devices, security systems and battery back-up. 

Uses / Applications

The Power Sonic PS-490 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-490:

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-490 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: 4.01" (102mm)

Width: 2.09" (44mm)

Height: 3.74" (95mm)

Height Over Terminal: 4.02" (102mm)

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 (450 mA to 3.50 Volts) - 9.0 Ah

10 Hr (830 mA to 3.50 Volts) - 8.3 Ah

5 Hr (1.53 A to 3.40 Volts) - 7.7 Ah

1 Hr (5.6 A to 3.00 Volts) - 5.6 Ah

Internal Resistance (Approximate)

11.0 Milliohms

Max Short-Duration Discharge Current (10 Seconds)

90.0 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-490
Battery Voltage 4 Volt
Amp Hour Rate 9 Ah
Battery Chemsitry SLA (Sealed Lead Acid)
Terminal Type F2
Length 4.01"
Width 1.73"
Height 3.74"
Height Over Terminal 4.02"
NSN 6140-01-290-9724
Warranty 6 Months
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