EQ 24/48-10


Battery Equalizer/DC Autotransformer

Model: EQ 24/48-10


This unit is an up or down voltage converter whose output is proportional to its input. It functions both ways, producing 24 V @ 10 Amps from a 48 V input or can be connected backwards to produce 48 V @ 5 Amps from a 24 V input.

When connected across a 48 V battery string, it functions as a battery equalizer, allowing loads to be taken off of the 24 V battery section of a 48 V battery pack without fear of damage to the battery pack due to voltage mismatch. It also allows a 24V voltage source to be used to charge the 48V battery string.


  • >95% efficiency, typically 96% over 20% load
  • Bi-directional power flow
  • Weatherproof, NEMA 4 enclosure

Electrical Specifications

Input low side Input high side
Input Voltage (nominal battery) V 24V 48V
Output Voltage 48V 24V
Output Current 5A
Current Limited
Current Limited
Ripple at load 30mV rms 30mV rms
Efficiency >95% >95%

Mechanical Specifications


  • Weatherproof, NEMA 4 enclosure


  • 4.5″ X 2.5″ X 2″ nominal, resembling a junction box with feet


  • approx. 2 lbs.

Temperature Range:

  • -40 deg C to 60 deg C
  • It is recommended, as with all electronics, that the unit not be placed in direct sunshine.


  • 6″ 12 Awg flying leads
  • Red= High Input +
  • Black= common Neg – for input and output voltage
  • White= Low Input +

Wire size:

  • red, black, white: Power leads #12 AWG


  • N/A weatherproof

Note: In the interest of continuous product improvement, specifications subject to change without notice.