ST-150 American Bass Audio Stealth 150 | 15Ah AGM Battery | Maintenance-Free, Sealed Power for Car Audio & More

Stealth 150 AGM Battery 15Ah 12V

SKU: ST-150

Up To 500 Watt Amplifiers

12V AGM Battery, 15 AH

Stealth 150 — 15Ah AGM Car Audio Battery for Compact Installs & Entry-Level Power

The Stealth 150 is the most compact battery in the Stealth Energy lineup by American Bass — built for enthusiasts who need clean, dedicated 12-volt power without eating up valuable install space. With 15 amp-hours of capacity and support for amplifier setups up to 500 watts, this sealed AGM battery is the easiest way to add a secondary power source to your car audio system and start hearing the difference that stable voltage makes.

At just 10.8 lbs and a slim 7.14" × 3.01" × 6.59" footprint, the ST-150 fits where other batteries simply can't — behind seats, under panels, inside custom enclosures, or tucked into a motorcycle or powersports application. Absorbed Glass Mat technology in a fully sealed, maintenance-free ABS housing means you can mount it in any orientation with zero risk of spills, leaks, or corrosion. A 225A max discharge current (5-second burst) delivers the instant power your amplifier needs during peaks and transient bass hits.

Why Choose the Stealth 150?

The ST-150 is the entry point to dedicated car audio power. If you're running a single amplifier in the 300–500W range and your stock battery is struggling to keep up — lights dimming on bass hits, voltage sagging at high volume — the Stealth 150 solves the problem at the lowest cost and smallest footprint in the lineup. It's also an excellent choice for motorcycle audio, powersports rigs, alarm and security systems, emergency lighting, and any 12V application that needs reliable, compact AGM performance.

NOMINAL VOLTAGE	12V
NOMINAL CAPACITY(20HR)	15.0AH
APPROX WEIGHT	Approx 4.9 kg (10.8lbs)
TERMINAL	T12
CONTAINER MATERIAL	ABS
MAX. DISCHARGE CURRENT	225A (5s)
INTERNAL RESISTANCE APPROX	18mΩ
NOMINAL OPERATING TEMP. RANGE	25 3 C (77 5 F )
DIMENSION	Length: 181.5 2mm (7.14 inches) Width: 76.5 2mm (3.01 inches) Container Height: 167.5 2mm (6.59 inches) Total Height (with Terminal): 167.5 2mm (6.59 inches)
RATED CAPACITY	15.0 AH/0.75A: (20hr ,1.80V/cell,25 C/77 F) 14.0 AH/1.40A: (10hr ,1.80V/cell,25 C/77 F) 12.8 AH/2.55A: (5hr ,1.75V/cell,25 C/77 F)11.5 AH/3.83A: (3hr ,1.75V/cell,25 C/77 F) 9.42 AH/9.42A: (1hr ,1.60V/cell,25 C/77 F)
CAPACITY AFFECTED BY TEMPERATURE	40 C (104 F): 103% 25 C (77 F): 100% 0 C (32 F): 86%
OPERATING TEMP.RANGE	Discharge: -15 50 C (5 122 F) Charge: 0 40 C (32 104 F) Storage: -15 40 C (5 104 F)
CYCLE USE	Initial Charging Current less than 4.5A.Voltage 14.4V~15.0V at 25 C(77 F)Temp. Coefficient -30mV/ C
STANDBY USE	No limit on Initial Charging Current Voltage 13.5V~13.8V at 25 C(77 F)Temp. Coefficient -20mV/ C
SELF DISCHARGE	Batteries may be stored for up to 6 months at 25 C(77 F) and then a freshening charge is required. For higher temperatures the time interval will be shorter.

Support

• Specification Sheet (PDF)