Retro Pro 56 Limitless Lithium
Regular price $1,399.99
Limitless Lithium
Retro Pro 56 – High-Capacity, Lightweight Performance in a Group 24 Case
The Retro Pro 56 from Limitless Lithium is a 56Ah LiFePO₄ powerhouse engineered for serious audio builds and high-performance systems. Designed in a Group 24 case, it’s compact enough for tight compartments yet delivers up to 16,000W burst wattage, making it ideal for competitive sound systems and demanding applications.
Key Specs & Highlights:
- Voltage: 12V (Resting range: 13.1V–13.4V)
- Capacity: 56Ah actual (200–240Ah Pb equivalent)
- Chemistry: Lithium Iron Phosphate (LiFePO₄)
- Life Cycles: 2,000 @ 80% Depth of Discharge
- BMS: Not included – for advanced users with external protections
- Internal Balance Board: Yes
Performance:
- Continuous Discharge Current: 750A
- Burst Discharge Current: 1200–1300A (temperature-dependent)
- Charge Input Limit: 400A max (exceeding this may reduce cycle life)
- Max Charge Voltage: 14.8V
Power Handling:
- Continuous Wattage Range: 9,000–13,000W (based on alternator size: 100A–400A)
- Burst Wattage Handling: Up to 16,000W
Physical Specs:
- Weight: 21 lbs
- Dimensions: 8.75" H x 6.5" D x 10.125" W
- Terminal Size: M8x125 Orientation: Positive Left
- Temperature Range: -22°F to 140°F (-30°C to 60°C)
The Retro Pro 56 is built for those who don’t settle—offering extreme power density, lightweight design, and rock-solid discharge performance. Pair it with a robust charging system and monitor your setup for best results.
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📍Insane Asylum Motorsports
700 N Golden Key St, Suite A8
Gilbert, AZ 85233
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