Limitless Lithium Retro Pro 56 Battery

Overview:
The Limitless Lithium Retro Pro 56 is a high-output 12V LiFePO4 battery engineered for demanding car audio and automotive electrical systems. With a 750A continuous discharge capability, up to 1,300A burst output, and support for approximately 9,000–13,000 watts depending on alternator capacity, it provides the high-current delivery and voltage stability required for serious audio builds.

Key Technical Features:

• 56Ah LiFePO4 capacity with a manufacturer-rated 200–240Ah lead-acid equivalent capacity.
• 750A continuous discharge current for sustained high-current applications.
• 1,200–1,300A burst discharge capability, temperature dependent.
• Supports approximately 9,000–13,000W continuous system output, depending on alternator size, with up to 16,000W burst capability.
• 2,000 life cycles at 80% depth of discharge for long-term performance.
• 13.1–13.4V resting voltage range with a 14.8V maximum charge voltage.
• Internal balance board for cell balancing; the battery does not include a BMS.
• Group 24 case size, measuring approximately 10.125" W × 6.5" D × 8.75" H and weighing 21 lbs.
• M8 × 1.25 terminals with positive terminal positioned on the left.

Compatibility & Fitment:

• Designed for 12V automotive electrical systems and high-output car audio applications.
• Ideal for SPL systems, competition builds, multi-amplifier installations, and high-powered subwoofer systems.
• Suitable for systems using approximately 100A–400A alternators, depending on desired continuous power output.
• Group 24 form factor provides compatibility with many battery mounting locations designed around this case size.
• Suitable as a primary or auxiliary battery when properly integrated into the vehicle's electrical system.
• Maximum charging voltage is 14.8V; charging above the manufacturer's specifications should be avoided.
• Maximum recommended charging current is 400A; exceeding this can reduce battery cycle life.

Why Choose This:
The Limitless Lithium Retro Pro 56 combines LiFePO4 chemistry, extreme current delivery, long cycle life, and substantial power-handling capability in a compact Group 24 package, making it a serious electrical upgrade for high-performance car audio systems.