Skip to content

Model: RP24-56AH
Series: Retro PRO

Voltage: 12V
Capacity: 56Ah (LiFePO4)
Equivalent Lead-Acid Rating: ~200–240Ah Pb-Eq

Resting Voltage: 13.1V – 13.4V
Max Charging Voltage: 14.8V
Continuous Discharge Current: 750A
Burst Discharge Current: 1,200A – 1,300A (temperature dependent)

System Power Capability:
– RMS: 9,000W – 13,000W (depending on alternator size)
– Burst: Up to 16,000W

Cycle Life: 2,000+ cycles @ 80% depth of discharge

Dimensions:
– Width: 10.125"
– Depth: 6.5"
– Height: 8.75"

Weight: 28 lbs

Terminal Type: M8-125
Terminal Orientation: Positive terminal on the left

Model

Retro Pro 56

Voltage

12V

Resting Voltage Range

13.1V-13.4V

Capacity (Amp Hours)

56AH (Not Pb Eq) 200-240 Pb Eq

Chemistry

LifePo4

Operating Temperature Range

-30-60℃/-22℉-140℉

Weight

21 lbs

Dimensions

Height 8.75” Depth 6.5” Wide 10.125”

BCI Group Case

Group 24

Terminal Size

M8x125

Terminal Orientation

Positive Left

Life Cycles

2,000 @ 80% DOD

Battey Management System (BMS)

No

Balance Board

Yes (Internal)

Max Charge Voltage

14.8V

Max Charge voltage BMS Cutoff

NA

Minimum Discharge Voltage BMS cutoff

NA

Max Input Charge Current

400A  *Charging higher than this can reduce cycle life

Continuous Discharge Current

750A

Max Discharge Current (Burst amperage)

1200-1300A (Temperature dependent)

Continuous Wattage Range (Alt. size dependent)

9,000-13,000W (100A-400A Alt)

Burst Wattage (Alt size dependent)

16,000W

Dealer Resources 

Customer Service

South Carolina Branch

  • Address: 804 Center St. West Columbia, SC 29169 USA
  • Email: sales@umdistributors.com
  • Sales: (803) 333-9475 
    Tech: (800) 425-0753 ext. 3
Ultimate Marketing © 2026. All Rights Reserved.