The battery charger that every household should have.

The MXS 3.8 is a versatile battery charger in a compact format that makes it convenient and easy to charge and maintain all household vehicles. The special cold mode means that you can also charge during cold winter days without problems. The MXS 3.8 satisfies all the home's charging needs as it charges all types of 12V batteries.

Features & Benefits

  • Three step, fully automatic switch mode model.
  • Charges lead-acid batteries (Wet, MF, GEL and AGM) from 1.2Ah to 120Ah.
  • Maintenance pulse charging increases battery life and gives superb performance.
  • Charges even drained batteries.
  • Pulse recover of slightly sulphated batteries.
  • Three unique charging modes for use on small batteries, large batteries and a special cold mode that is also suitable for AGM batteries.
  • Low back current drain, low ripple and input voltage independent (170-260V).
  • High efficiency: 85%
  • Delivered with two interchangeable connection leads, one with clamps, and one with eyelet terminals.
  • The charger can by connected for months, ideal for seasonal vehicles.
  • Compact design with mounting holes for permanent assembly.
  • 5 year warranty.



  • Motorbike
  • Snowmobile
  • Car
  • Lawnmover
  • Vintage Car
  • Motorboat
  • Four Wheeler
  • Sailboat
  • Agricultural Machinery
  • Caravan
  • Moped

Technical Data

Model MXS 3.8
Input voltage AC 220-240VAC, 50-60Hz
Output voltage Nominal: 12V
Charging voltages 14.4V/0.8A, 14.4V/3.8A, 14.7V/3.8A
Charging current 3.8A max
Back current drain* <1Ah per month
Ripple** <4%
Ambient temperature -20℃ to +50℃, output power is reduced automatically at higher temperatures.
Type of charger 4-step, fully automatic charging cycle
Type of batteries 12V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Battery capacity 1.2-80Ah up to 130Ah for maintenance
Dimensions 165x61x38mm
Insulation IP 65
Weight 0.6kg

* Back current drain is what drains the battery if the charger is connected without the power cord connected. The MXS 3.8's extremely low back current drain corresponds to 1Ah per month. Many other chargers have 1Ah per day.

** Ripple denotes the amount of interference there is to 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. Voltage ripple could harm other equipment, which is connected to the battery. The MXS 3.8's ripple is only 2%. The battery gains a long service life and there is no risk of damage to other electronic devices connected to the battery.


These accessories are available separately for the MXS 3.8

Comfort Comfort Comfort Comfort Comfort Comfort Comfort
(56-972, MXS 3.8 12V 3.8A 7 Stage Multi Smart Charger, 7350009569729)
Product Options
CTEK MXS 3.8 CTEK MXS 3.8 £79.99