Retro Pro 56 Limitless Lithium

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 si