CTEK battery testers are here to help you choose your next step in battery care
29 October 2026
Up to 5 year warranty
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CS ONE (Gen 2) is our most versatile charger, compatible with virtually all 12V batteries across cars, motorcycles, boats, campers, and more. It automatically adapts for optimal safety and performance—making it the safest choice when you’re unsure.
29 October 2026
Get to know your battery with the CTEK BATTERY TESTER and BATTERY TESTER PRO. Now part of CTEK’s battery care range, these easy-to-use tools check vehicle battery health, cranking performance and charging system output, helping you identify potential problems and decide what to do next. Choose the compact BATTERY TESTER for home use and everyday workshop checks, or BATTERY TESTER PRO for professional diagnostics with printed customer reports.
A vehicle that starts today may still have a battery that needs attention. Testing gives you a clearer picture of its condition, helping you identify low charge or signs of deterioration before they disrupt your plans.
It also helps answer an important question: does the battery need charging, replacing or further investigation? A low state of charge does not automatically mean a battery has reached the end of its life. Testing, charging where appropriate and retesting can help avoid unnecessary replacement.
Checking cranking performance and charging system output provides further insight, helping identify potential problems beyond the battery itself. Acting on those findings can reduce the risk of unexpected starting difficulties and being left stranded.

The CTEK BATTERY TESTER is the practical starting point for drivers, vehicle enthusiasts and workshops that want quick answers without printed reports.
Use it before a long journey, after a vehicle has been standing unused or as part of regular battery care. In a workshop, it is a convenient tool for routine checks when a vehicle arrives for servicing or repairs.
Connect the clamps and follow the on-screen prompts. The tester draws power directly from the battery being checked and displays results on a clear 2.8-inch colour screen.
Despite its compact size, it goes beyond a basic voltage reading. It checks battery health, charge status and internal resistance, alongside cranking performance and charging system output. Its lightweight design makes it easy to store and keep close at hand, while a protective rubber bumper adds durability and a secure grip.
Choose it if: you want straightforward battery diagnostics at home or a practical tool for simple, regular workshop checks.
The CTEK BATTERY TESTER PRO is designed for workshops that need to turn diagnostic findings into clear service recommendations.
Alongside battery, cranking and charging system testing, it offers detailed insights including ripple voltage testing to help identify charging system issues. Its 2.8-inch colour display makes results easy to review, while the built-in thermal printer produces reports on the spot.
That reporting capability is particularly valuable when discussing work with customers. Showing the findings helps explain why charging, replacement or further investigation is recommended, giving customers evidence to support their decision.
For busy workshops, it supports a consistent approach to battery checks and clearer communication between technicians, service advisers and customers.
Choose it if: battery testing forms part of your professional service and you want printed reports to explain findings and support recommendations.

| CTEK BATTERY TESTER | CTEK BATTERY TESTER PRO | |
|---|---|---|
| Best suited to | Home garages and routine workshop checks | Professional workshops |
| Battery, cranking and charging system tests | Yes | Yes |
| Clear colour display | 2.8-inch | 2.8-inch |
| Built-in printer | No | Yes |
| Main benefit | Convenient checks with clear on-screen results | Detailed diagnostics with printed evidence for customers |
Both support 12V and 24V lead-acid batteries and battery systems, including Regular Flooded, AGM, GEL and EFB types. They work with 10 industry-standard battery rating systems, including CCA, EN and DIN.
At home, regular testing helps you understand when action is needed. If a compatible 12V battery needs charging, a smart charger such as the CTEK NXT 5 can replenish its charge before you test again. Poor battery health or starting and charging system concerns may require professional attention.
For workshops, CTEK encourages checking the battery in every vehicle that comes through the door. Routine testing helps uncover overlooked issues, identify genuine service needs and give customers confidence in the advice they receive.
Explore the CTEK BATTERY TESTER for home and everyday checks, or choose BATTERY TESTER PRO for professional diagnostics and customer reporting.

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