Description Specifications Stealth 350 35Ah 12V AGM Battery for 900W Car Audio Systems SKU: ST-350 Up To 900 Watt Amplifiers 12V AGM Battery, 35 AH Stealth 350 — 35Ah AGM Car Audio Battery for Mid-Range Systems The Stealth 350 is the mid-range workhorse of the Stealth Energy lineup by American Bass. With 35 amp-hours of capacity and support for amplifier setups up to 900 watts, this sealed AGM battery hits the balance point that most car audio builds actually need — enough reserve power to eliminate voltage sag and keep your amplifiers performing at their best, in a package that's still compact enough for flexible mounting. Built with Absorbed Glass Mat technology inside a fully sealed, maintenance-free ABS enclosure, the ST-350 delivers clean, stable 12-volt power with no risk of spills, leaks, or acid corrosion. A 525A max discharge current (5-second burst) and low 11mΩ internal resistance mean fast, efficient power delivery right when your system demands it — on transient bass hits, sustained low notes, and everything in between. Why Choose the Stealth 350? The ST-350 is the most versatile battery in the Stealth Energy range. It's large enough to serve as the sole dedicated audio battery for a single high-powered amplifier or a modest two-amp setup, yet at 24.7 lbs and a 7.68" × 5.12" × 6.57" footprint, it's still easy to fit into trunks, behind seats, or alongside custom enclosures. If you've outgrown a basic setup but aren't ready for a full 55Ah or 75Ah build, the Stealth 350 is the smart next step. NOMINAL VOLTAGE 12V NOMINAL CAPACITY(20HR) 35.0AH APPROX WEIGHT Approx 11.2 kg (24.7 lbs) TERMINAL T6 CONTAINER MATERIAL ABS MAX. DISCHARGE CURRENT 525A (5s) INTERNAL RESISTANCE APPROX Approx 11mΩ NOMINAL OPERATING TEMP. RANGE 25+3 C (77+5 F ) DIMENSION Length: 195+2mm (7.68 inches) Width: 130+2mm (5.12 inches) Container Height: 164+2mm (6.46 inches) Total Height (with Terminal): 167+2mm (6.57 inches) RATED CAPACITY 35.0 AH/1.75A: (20hr ,1.80V/cell,25 C/77 F) 32.6 AH/3.26A: (10hr ,1.80V/cell,25 C/77 F) 29.7 AH/5.95A: (5hr ,1.75V/cell,25 C/77 F) 26.8 AH/8.93A: (3hr ,1.75V/cell,25 C/77 F) 22.0 AH/22.0A: (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 10.5A. Voltage 0 0 0 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)
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