CTEK MXS 7 Smart Charger

CTEK | 8 Step Charger | 12V 7Amp


CTEK MXS 7 Image


7Amp Automatic Battery Charger

For charging batteries rated up to 150Ah

& Maintenance ‘trickle’ charging for batteries up to 225Ah


+ Advanced charging with temperature compensation

The MXS 5.0 comes with automatic temperature compensation for the best charging performance, even in extreme conditions.

+ Cold weather performance


At a glance:

  • Fully automatic ‘connect and forget’ 8 step 12V charging
  • Normal battery, Cold Weather, AGM and Recond programs
  • Built in automatic temperature compensation
  • Patented float/pulse maintenance charging for batteries up to 225Ah


The MXS 7.0 is the perfect universal 12 V charger. It is ideal for charging larger batteries such as caravan, RV, boat and car batter- ies. These types of vehicles often demand features that can solve a broad range of battery-related problems. The MXS 7.0 offers fea- tures such as battery diagnosis that shows if a battery can receive and retain a charge, a special reconditioning function that restores stratified and deeply discharged batteries, unique maintenance charging, a mode for optimised charging during cold winter days and the charging of demanding AGM batteries (i.e. Optima). It also has a power supply mode which allows the battery to be discon- nected from the vehicle without losing important configurations.

The MXS 7.0 is a fully automatic 8-step charger that delivers 7 A to 12 V batteries from 14–150 Ah and is suitable for maintenance charging up to 225 Ah. The charger is IP65 classified (splash and dust proof), designed to protect vehicle electronics, non-sparking, reverse polarity protected, and short-circuit proof. It is delivered with a 5-year warranty.


In the box:

  • Charger
  • Crocodile Clips
  • M6 Eyelets (for permanent connections)
  • Carry Bag


Why do Groves sell this and what are our recommendations?

CTEK boasts incredible popularity in the battery aftercare market due to how well their products work. Using their chargers is extremely easy and can provide a ‘connect and forget’ battery charging solution; we even use them ourselves at our workshop.

They are fully automatic which means you can leave them on charge and they will switch themselves off when they are done.

When a battery is not in use, we recommend charging once every 3 months or so. 


We recommend this charger if you:

  • Want to get up to 3 times the life out of your battery
  • Do short journeys, town driving etc
  • Use your vehicle intermittently 
  • Have a moderate to high amount of electrical equipment (heated seats, air conditioning, convertible, daytime running lights etc.)


The MXS 7 is great for charging all types of batteries quickly. From motorbike to leisure batteries; this charger will charge very quickly and can be left to maintain batteries for as long as you like. Perfect if you plan to keep the charger connected for several days / weeks / months. 

We would recommend this charger for leisure batteries.

We would recommend this charger if you are charging batteries frequently.


Technical Information:

Input: 220–240VAC, 50–60Hz, 1.2A max

Output: 14.4V/14.7V/15.8V/13.6V, 7.2A max

Start voltage: 2.0V

Back current drain*: Corresponding to less than 1Ah/month

Ambient temperature: -20˚C to +50˚C

Battery types: All types of lead-acid batteries, 12V, WET, MF, Ca/Ca, AGM, GEL

Battery capacity: 14–225Ah

Warranty: 5 years

Insulation class: IP65


Warranty Icon


Why do batteries need to be charged?

With a fully charged battery you don’t have to worry about whether your sports car or motorbike will start after a winter stored away. You have full control and avoid any unpleasant surprises. In addition, the battery remains in top condition, and you can rest assured it will work correctly. Regular charging also prolongs battery lifespan. 

When should batteries be charged?

All batteries self-discharge to some extent, but the amount depends on the temperature. If the battery’s no-load voltage drops to 12.4 V or less for an extended period, sulfation increases, which impairs charging. So it is important to keep the no-load voltage high, even if the battery is not being used. This applies, for example, to batteries for pleasure boats, motorbikes and other vehicles that are only used part of the year. You can do this either by charging the battery at intervals or through continuous maintenance charging.


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