Stealth Energy Stealth 350 Battery

The Stealth Energy Stealth 350 Battery is a high-capacity pack designed for demanding car-audio builds, offering 35.0 Ah at the 20-hour rate with a robust 525 A max discharge for brief high-current needs.

• NOMINAL CAPACITY(20HR): 35.0 AH (1.80 V/cell, 25 C/77 F). In real-world use this translates to extended runtime for head units, DSPs, and multi-amp setups at a steady draw.
• APPROX WEIGHT: Approx 11.2 kg (24.7 lbs). A substantial mass that affects mounting considerations and vehicle weight distribution in performance builds.
• TERMINAL: T6. High-current terminal compatibility supports reliable connections under demanding load conditions.
• CONTAINER MATERIAL: ABS. The durable plastic enclosure provides rigidity and protection in an automotive environment.
• MAX. DISCHARGE CURRENT: 525 A (5s). Enables brief high-current bursts (e.g., transients or peak amplifier demands) with minimal instantaneous sag.
• INTERNAL RESISTANCE APPROX: approx 11 mΩ. Lower resistance helps reduce voltage drop under load for steadier voltage delivery.
• NOMINAL OPERATING TEMP. RANGE: 25+3 C (77+5 F). Indicates the temperature at which the specified nominal performance is rated.
• DIMENSION:
  • Length: 195+2 mm (7.68 inches)
  • Width: 130+2 mm (5.12 inches)
  • Container Height: 164+2 mm (6.46 inches)
  • Total Height (with Terminal): 167+2 mm (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 10.5 A. Voltage 14.4 V~15.0 V at 25 C (77 F). Temp coefficient -30 mV/°C.
• STANDBY USE: No limit on initial charging current. Voltage 13.5 V~13.8 V at 25 C (77 F). Temp coefficient -20 mV/°C.
• SELF DISCHARGE: Batteries may be stored for up to 6 months at 25 C (77 F) and then a freshening charge is required; higher temperatures shorten the interval.

Benefits: This battery suits multi-amp, high-demand systems that require solid energy storage with strong transient capability. Its ABS enclosure and T6 terminal support secure, high-current field installations, while its wide operating and storage temperatures give flexibility for vehicles in varied climates. The rated capacity across discharge rates and the temperature-based capacity adjustments help you size the pack precisely for your head unit, amps, and gain structure without overestimating runtime.