56-674 - CTEK Charger - Multi US 25000

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Part #: 56-674
Notes: Multi US 25000
MSRP: $324.99
Your Price: $314.99


AMP Hour Rating 40-500

All Fitments

Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes

Product Description

The CTEK Charger, MULTI US 25000 (Part No. 56-674) is an 8-step, fully automatic primary switch mode battery charger. A powerful charger for 12V batteries that require rapid charging such as in garages, RV’s, boats and of course cars. Unlike old traditional battery chargers CTEK chargers are designed with focus on simplicity, safety and flexibility.


  • The Charger With Maximum Power
  • Fully automatic – for charging and maintenance
  • Patented desulphation function
  • Weather independent
  • Electronic protection
  • Unique SUPPLY and RECOND mode
  • Designed for safety

Technical Data

  • Input voltage AC: 100-125VAC, 50-60Hz
  • Output voltage: Nominal: 12V
  • Efficiency: HIGH 85%
  • Charging voltage: 14.4V, temperature compensated
  • Charging current: 25A max
  • Back current drain: *<2Ah per month
  • Ripple: ** 4%
  • Ambient temperature: 0°F to 120°F, output power is reduced automatically at higher temperatures
  • Cooling: Fan
  • Type of charger: 8 step, fully automatic switch mode with pulse maintenance
  • Type of batteries: 12V lead-acid batteries (Wet, MF, AGM, GEL and Ca)
  • Battery capacity: 50-500Ah
  • Dimensions (LxWxH): 9½ x 5½ x 2½ inches
  • Insulation: IP44 (outdoor use)
  • Weight: 3.2lbs

*) Back current drain is what drains the battery if the charger is connected without the power cord connected.

**) Ripple describes the quality of the current and voltage. A high current ripple heats the battery and shortens its life. A linear charger has a current ripple of 70-400% which is much larger than the maximum 5% for a modern sealed battery. High voltage ripple could harm other equipment that is connected to the battery. MULTI US 25000 delivers voltage and current with very low ripple. The battery has a long service life and there is no risk of damage to other electronic devices connected to the battery.