THE PROBLEM
Why battery failures still surprise fleets
A starter battery can seem fine during a basic inspection and still fail soon after. Common checks do not always show how much useful energy the battery really has left.
For fleet operators, that creates a costly cycle: roadside service calls, no-start events, delayed vehicles, technician time, and batteries replaced too early just to be safe.
Cadex helps teams make battery decisions based on condition instead of guesswork.
THE CADEX SOLUTION
A smarter way to test battery health
Cadex Spectro™ focuses on battery capacity, a more useful indicator of battery health than a simple pass-fail check. In a fast test, technicians can identify batteries that are still serviceable, batteries that should be watched closely, and batteries that should be replaced before failure.
That means fewer surprises, better maintenance timing, and more confidence in every service decision.
HOW IT WORKS
Fast battery testing designed for real service environments
Spectro™ compares a battery’s electrical behavior to known battery models to estimate condition and remaining usefulness. This gives technicians a practical health reading without the long process of traditional testing.
Instead of waiting for the battery to fail in service, teams can identify risk earlier and act during scheduled maintenance.
WHY CAPACITY MATTERS
Why capacity tells a better story than CCA alone
A battery may still crank an engine even when its reserve energy has already dropped too far. That is why cold cranking numbers do not always tell the whole story.
Multi-mode EIS in Spectro™ departs from load testing by assessing the electrochemical evidence of a battery with a frequency scan. Rather than checking overall battery health, Spectro™ assures Minimum Operational Reserve Energy (MORE) in capacity and reads internal resistance (Ri) in a non-invasive 30-second test. Capacity and Ri do not correlate.
For the customer, the message is simple: a battery that starts today may not last until the next service interval. Capacity testing helps you catch that earlier.
BENEFITS
What fleets gain
Reduce no-start events and roadside battery failures.
Improve confidence in maintenance decisions.
Avoid replacing batteries too early.
Support preventive maintenance with clearer battery data.
Keep more vehicles available for service.
Ideal for
Commercial fleets, dealership service departments, municipal fleets, transit operators, truck service networks, and maintenance teams responsible for vehicle uptime.
Book a Demo
Reduce battery surprises across your fleet
See how Cadex can help your team identify weak batteries earlier, improve replacement timing, and keep more vehicles ready for the road.
Validating performance by EIS Test
Battery Check in Seconds
The battery is the weakest link in a chain that causes half of all system failures. Battery diagnostics has been lagging, but technology is available that observes capacity fade to fully use each battery with call to replace before failure.
The Spectro CM-24 tests battery health by modeling a battery against a matrix to secure Minimum Operational Reserve Energy (MORE) based on capacity, the leading health indicator.
Threshold Setting
Capacity pass/fail levels for deep-cycle batteries are commonly set to 60%. A PASS assures full day service; FAIL calls for replacement or lower tasks.
The Spectro CM-24 comes with a matrix of choice and ability to download other matrices from the Matrix Library. The matrices are kept in the CadexCloud, a web app that also stores test results and shares data with fleet supervisors.
How does Spectro™ work?
A frequency scan produces a Nyquist plot that models a battery against a matrix to extract capacity, state-of-charge (SoC) and other characteristics. The test is non-invasive and accuracy rests on the Matrix Integrity Level (MIL) that can be improved by scanning additional batteries of same-model but with diverse performances to capture all anomalies.
The EIS Direct-Drive tests batteries in 30 seconds with capacities of up to 300Ah. The battery is not agitated during testing and the compact test unit stays cool. Scientists predict that battery diagnostics will advance to Multi-Model EIS methods, a patented technology Spectro™ devices use.
Checking Battery Match
Battery runtime is governed by the weakest link in a chain. Matching can be assured by measuring leftover charge of each pack after service with the Spectro CM-24. State-of-charge of a well-matched string should be within 10%. Replace low performers with a pack of similar capacity.
Operation
Settings are entered through the host with tests results shown in numbers and by graphics. The system works in local mode by storing test data in the host with optional connection to CadexCloud to share test results with fleet supervisors.
Saved data includes battery status, charge levels, internal battery resistance and temperature, as well as VIN records and work orders. Compatible printers produce print reports and labels.
Historic Test Data
Testing is simplified by marking each battery with QR code. A scan connects the host to CadexCloud to download custom matrices, view previous results and store new readings.
With matrices available from the Matrix library, Spectro devices form an open test platform to service all major batteries.
Capacity Thresholds
Pass/fail settings can be changed by selecting matrices with different MORE thresholds. This enables reserving top performers for critical uses while keeping regular packs for everyday uses.
Specifications
- Uses multi-model electrochemical impedance spectroscopy (EIS) to read capacity, CCA and SoC.
- Test time is 30s with a scanning frequency of 2,000Hz to 4Hz. Frequencies to 0.1Hz are available.
- Includes matrix of choice; additional matrices can be downloaded from CadexCloud.
- Capacity pass/fail set to 60%. Other settings are on request. Measures internal battery resistance.
- Test ranges: 3–12V; 24V; 35–300Ahand 300µΩ. Extended range to 48V nominal is on request.
- Internal battery performs 250 tests between charges.
- Unit connects to a host by Bluetooth and Cloud Analytics by Wi-Fi.
- 1 meter (40”) test cable connects to DB15; USB-C charges internal battery with AC adapter.
- D: 182mm (7.16“); W: 96mm (3.78“); H: 47mm (1.85“).430g net (0.94 lb.). Comes in transit case:
- Complies with CSA/UL/CE. RoHS. REACH, RED, WEEE, ISTA 3A, IP52 and FCC Type A.