CTEK MUS 4.3 POLAR Battery Charger (56-958)




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The MUS 4.3 POLAR (Part No. 56-958) has been specially developed to offer excellent all-round charging with special cold weather performance and adapted AC and DC cables to handle severe cold down to -22°F (-30°C).

Vehicle Fitment:
• Universal Product
• Snowmobiles
Ideal for cold weather applications

Complete Battery Care - Unique and patented system to recover, charge and maintain all lead-acid battery types to maximize performance and extend life.
Safe and easy to use - User safety through spark free operation and reverse polarity protection. Vehicle electrical safety through exceptionally clean voltage and current delivery with no surges or spikes. No need to disconnect the battery from the vehicle when charging.
Connect and Forget - Simple plug and play operation. Select the program and mode and leave the charger to do the rest.
Unique 8 step charging - The patented 8 step program tests battery condition and revives, charges and maintains to ensure maximum battery life and performance. RECOND recovers deep discharged and stratified batteries. FLOAT/PULSE maintenance ensures ideal battery care during periods of inactivity.
Charges down to -22°F (-30°C) - Specially developed for use in extreme cold conditions and featuring AC and DC cables adapted for low-temperature use.
Extends battery life - The unique features of CTEK chargers combine to maximize performance and extend battery life.

Charger Info
The MUS 4.3 POLAR is an advanced microprocessor controlled battery charger providing unrivaled performance on batteries from 1.2Ah up to 110Ah. Features include diagnosis of battery condition to establish if it can receive and retain charge, patented automatic desulphation program and a special reconditioning function that will revive and restore deeply discharged and stratified batteries. ‘Snowflake’ mode ensures ideal charging performance even in the most extreme cold conditions. Patented Float/Pulse maintenance makes the MUS 4.3 POLAR ideal for long-term maintenance. The entire process of battery testing, charging and maintenance is easily followed on the clear LED display.

The MUS 4.3 POLAR is a fully automatic ‘connect and forget’ 12V charger with 8 charging steps and offers selectable 0.8A, and 4.3A programs. The RECOND and SNOWFLAKE modes operate individually or together in both 0.8A and 4.3A programs providing great flexibility for the user. Wide charging range on all lead-acid battery types from 1.2Ah up to 110Ah with additional maintenance capability to 160Ah. Splash proof and dust proof (IP65). The MUS 4.3 POLAR is easy and safe to use, protects vehicle electronics, spark-free, reverse polarity protected and short circuit proof. The MUS 4.3 POLAR features a 5 year warranty.

Technical information:
Charge Voltage 14.4 / 15.0 / 15.8 V
Input Voltage 100-120VAC, 50-60Hz
Battery Capacity 1.2-110 Ah, up to 160 Ah for maintenance
Minimum Battery Voltage Required 2.0V
Charging Current Max 4.3 A
Type of Charger 8 step, fully automatic charging cycle
Ambient temperature Handles severe cold down to -22°F (-30°C)
Battery types 12V lead-acid batteries (Wet, MF, AGM, GEL)
Warranty 5 years

Battery Info:
AGM: The AGM lead-acid batteries are sealed, maintenance free and easy to charge. Many automakers and car owners are adopting the use of AGM batteries for the increased starting demand of modern cars with start/stop feature. These are ideal for higher electricity demand (such as those with larger engines), and are more resilient to being drained. These batteries are designed to perform better in all temperature ranges and are more durable than flooded batteries.
(Examples are: Optima batteries, and Odyssey batteries)
EFB: Your vehicle will only require an EFB (Enhanced Flooded Batteries) battery if it currently has one. For example, vehicles with Stop-Start technology may use one of these batteries. These batteries are meant to tolerate the constant stopping and starting without impacting the battery. While similar to the AGM, it has a longer cycle life. The EFB battery will withstand more cycles of charge and discharge than an AGM before it reaches the end of its useable life.
CA/CA: A calcium battery is a lead acid battery with a calcium component. The battery container is fully sealed and maintenance-free. Many modern vehicles use calcium batteries as they are less likely to be affected by extreme weather conditions and higher charge rates.
Wet: Also called Flooded or Conventional, the wet cell batteries are the most commonly used car battery. Usually flooded batteries are not sealed. Flooded batteries hold very good rates of charge for the price, but require more work.
Gel: The gel-filled lead-acid batteries come with a Geld filled’ label on the battery. Delicate and needs caution when charging, however NOT commonly used in vehicles.
MF: A maintenance free battery is a sealed battery that is easily identifiable because they do not have filler caps. Most new cars come standard with maintenance free batteries.
(A battery can be one of the above types and MF)

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