Skip to content
BLUE COLLAR BUYS: Save Up to 50%. Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.
Print

CTEK Power MUS 4.3 Test & Charge — 12V, 4.3A, Smart Battery Charger & Tester, Model# CTK56-959

Item# 7162715
CTEK Power MUS 4.3 Test & Charge — 12V, 4.3A, Smart Battery Charger & Tester, Model# CTK56-959

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

CTEK Power MUS 4.3 Test & Charge — 12V, 4.3A, Smart Battery Charger & Tester, Model# CTK56-959

Click or Tap image to Zoom

$128.99

  • Shipping: 

    Factory shipped

  • Store Pickup: 

    Not available - online only
  • 12V battery charger and diagnostic tester in one smart unit
  • Charges batteries from 1.2Ah to 110Ah, ideal for cars, motorcycles, and more
  • 8-step automatic charging for optimal battery care
  • Desulphation and reconditioning modes restore deeply discharged batteries
  • Cold weather mode (Snowflake) for charging in low temperatures or AGM batteries

  • Prop 65 Warning: See Details

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Compare

Product Summary

The CTEK MUS 4.3 TEST CHARGE (CTK56-959) is a powerful, all-in-one solution that combines advanced smart battery charging technology with comprehensive system diagnostics. Designed for 12V batteries from 1.2Ah to 110Ah, this charger not only restores and maintains your battery’s performance but also tests your battery, starter, and alternator, helping you identify and resolve electrical issues before they leave you stranded. Backed by a microprocessor-controlled 8-step charging process, the MUS 4.3 features CTEK’s patented desulphation and reconditioning modes to revive deeply discharged or stratified batteries. The built-in ‘Snowflake’ cold weather mode ensures optimal charging performance in low temperatures or with AGM batteries. Whether you’re storing your vehicle or maintaining a daily driver, the Float/Pulse maintenance mode provides the safest and most effective long-term battery care. For diagnostics, three built-in test programs allow you to measure battery voltage, cranking power, and alternator output—essential insights to keep your vehicle’s electrical system in check. With reverse polarity protection, spark-free operation, and rugged components, this charger is ideal for automotive enthusiasts, daily drivers, and professionals alike.

What's Included

    (1) (1) Connect Eyelet M10 lead, (1) Connect Clamp lead (alligator clamps), (1) User manual

Features + Benefits

  • 12V battery charger and diagnostic tester in one smart unit
  • Charges batteries from 1.2Ah to 110Ah, ideal for cars, motorcycles, and more
  • 8-step automatic charging for optimal battery care
  • Desulphation and reconditioning modes restore deeply discharged batteries
  • Cold weather mode (Snowflake) for charging in low temperatures or AGM batteries
  • Three test programs check battery condition, cranking power, and alternator output
  • Patented Float/Pulse maintenance mode for long-term battery health
  • Reverse polarity protected, spark-free, and short-circuit safe

Key Specs

AttributeSpecification

item#

7162715

Brand

CTEK Power, Inc.

Ship Weight

1.8 LB

Volts

12

Wheeled

No
AttributeSpecification

Overcharge Protection

Yes

Polarity Reversal Protection

Yes

Product Weight

1.9000 lb

Dimensions L x W x H (in.)

4.0 x 4.0 x 0.5 in

Reviews

Questions & Answers

Recently Viewed Items

This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.