Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

Fleet Battery Monitoring Goes High-Tech with Clarios IdleLess and Battery Manager

Clarios Connected Services offers predictive battery monitoring that helps fleets lower fuel use, avoid jumpstarts, and optimize maintenance planning.

Deborah Lockridge
Deborah LockridgeEditor and Associate Publisher
Read Deborah's Posts
November 26, 2025
Truck technician installing Clarios' IdleLess battery monitoring system

A Clarios technician installs the IdleLess battery monitoring system, helping trucking fleets cut idling time.

Photo: Clarios

4 min to read


Clarios Connected Services gives trucking fleet managers a new level of insights into their batteries, using real-time battery data and artificial intelligence to help extend battery life and reduce idling, resulting in fuel and maintenance cost savings.

And while Clarios also makes batteries, Clarios Connected Services work with any battery chemistry from any battery maker, according to the company.

Ad Loading...

It’s a modular platform. IdleLess, announced at ACT Expo in April, can ensure truck drivers' comfort and peace of mind while avoiding unnecessary idling and wasted fuel.

Battery Manager monitors the health of the battery and notifies fleets when the battery is nearing the end of its life. 

Real-Time Alerts Take the Guesswork Out of Overnight Idling

Truck drivers tend to idle more than they need to, trying to stay comfortable in their truck cabs overnight, because they don’t have real-time battery charge status. 

Ad Loading...

IdleLess monitors the charge level of the battery and sends drivers alerts on when to start and stop the engine.

The Clarios IdleLess solution monitors the state of vehicle batteries and provides real-time actionable insights to fleets, helping to maintain optimum battery charge level while reducing fuel consumption and emissions. 

According to Clarios, fleets using the system can reduce unnecessary idling by about 60%, saving roughly $3,300 in fuel per truck per year. Because they’re using their batteries more efficiently, fleets can also avoid some maintenance costs. Over five years, that can add up to more than $13,000 in savings per vehicle, Clarios estimates.

The solution uses three components:

  • Battery Data: Each battery has a sensor to collect voltage, current and temperature data, which is sent to the Clarios cloud via a cellular gateway.

  • Proprietary algorithm: With 130 years of expertise in low-voltage batteries and vehicle power systems, Clarios has developed advanced AI algorithms to convert raw data into predictive insights on battery state of charge.

  • Communications link with drivers and fleet managers: These predictive insights are converted into actionable alerts, notifying drivers when to start and stop their engines to maximize fuel savings while minimizing the risk of a battery-related downtime event.

Ad Loading...

"The Clarios idling reduction solution not only maximizes battery potential but also revolutionizes the way drivers and fleet managers understand and utilize battery power," said Cagatay Topcu, vice president of Clarios Connected Services.

A Clear View of Truck Battery Health Across the Entire Fleet

The insights into battery health provided by Battery Manager allows fleet managers to plan ahead and know when a battery needs to be replaced instead of replacing on a set schedule. This can mean getting more life out of the battery — and less risk of downtime.

In addition, Battery Manager monitors charging system health and analyzes the system to see if there’s something impacting the battery, like an alternator putting out the wrong amount of power. 

Insights are delivered through a customer portal. The fleet manager can see how many are green, yellow, or red, so you can see at a glance which batteries need attention. Battery Manager is portal-agnostic and Clarios offers APIs to integrate into a fleet’s existing maintenance software.

Clarios Battery Manager monitors individual batteries, not the battery pack as a whole. Often fleets will replace the whole battery pack, not knowing which one is the culprit. 

Ad Loading...

Even fleets that don’t have jumpstarts may have over-spec’ed their batteries to prevent it, adding expense and weight. 

And with Battery Manager, fleets don’t need to rely on battery testers that are often inaccurate.

Ruan Sees Fast ROI in Pilot Deployment

Ruan Transportation Management Systems, Des Moines, Iowa, quickly saw the return on investment in a pilot program and is now deploying IdleLess with Battery Manager in strategic phases.

As part of that implementation, the 3,500-truck private fleet will train drivers to maximize idle reduction benefits.

When Ruan started the pilot program, the fleet quickly added more trucks to the pilot, going from 10 trucks to more than 50, as it found ROI opportunities beyond idle reduction. 

Ad Loading...

In fact, it was Ruan who noticed the Battery Manager offered savings that were low-hanging fruit beyond the fuel savings from IdleLess, according to Clarios officials, such as eliminating jumpstarts.

The idling reduction technology is now available to U.S. fleet operators. 

More Maintenance

A GP Transco tractor-trailer crosses a bridge over a river, with trailer side skirts visible beneath the white trailer.
Fuel Smarts•by Deborah Lockridge•October 27, 2026

How GP Transco Builds Fuel Savings a Fraction at a Time

Aerodynamic specs, solar panels, and driver incentives help GP Transco turn small efficiency gains into savings it can reinvest in its people.

Read More →
Maintenance•by Deborah Lockridge•October 23, 2026

Oil Crisis Squeezes Trucking Lubricant Supplies

Fleets report higher lubricant costs as Middle East disruptions tighten supplies of ingredients used in synthetic engine oils and some driveline lubricants.

Read More →
photos of three Shell heavy-duty engine oil bottles
Maintenance•by News/Media Release•October 16, 2026

Shell Prepares Rotella Oils for 2027

New CL-4 and FB-4 formulations will begin arriving in early 2027, with improved protection against oil breakdown, wear and deposits, according to Shell.

Read More →
Ad Loading...
Three Mack Anthem heavy-duty trucks parked side by side beneath an overpass, including two highway tractors and a vocational truck.
Maintenance•by News/Media Release•October 6, 2026

Mack Expands Extended Coverage With Four Chassis System Plans

Mack Trucks' new system-specific coverage options allow heavy-duty fleets to select protection for driveline, cab, HVAC, electronics, and advanced safety components.

Read More →
Georgia state trooper inspecting the tires on a tractor-trailer at a weigh station
Maintenance•October 6, 2026

What an Out-of-Service Order Really Costs, and How to Plan for One

The repair invoice is the first number you see — and often one of the smallest. Here’s what else an out-of-service order can cost a fleet, and how planning can reduce the damage.

Read More →
Abstract visual of truck part with Fleetrite logo
Maintenance•October 5, 2026

International Launches Online Truck Parts Store

Fleetrite.com lets fleets and repair shops find OEM and all-makes parts, check prices and availability, and order without calling a parts counter.

Read More →
Ad Loading...
Two truck tires with a muted highway background
Maintenance•by News/Media Release•October 2, 2026

Continental Introduces New Regional Truck Tires

Continental says its new Generation 5 steer and drive tires for regional operations offer longer tread life, with estimated mileage gains of 22% and 19%, respectively.

Read More →
A man working on a truck engine.
Maintenance•October 1, 2026

How AI Can Help Your Techs’ Efficiency

The technician shortage isn't going away, and no single fix can close the gap on its own. Trent Broberg makes the case that AI's real job in the shop is protecting the billable hours and job satisfaction of the techs you already have, not asking them to work faster.

Read More →
A woman holding a tablet with a screen showing rectangles of various colors
Fleet Management•September 16, 2026

Color Match Smarter: Tools That Restore & Perform

For fleet managers and collision repair professionals keeping heavy-duty trucks on the road, getting the color right the first time isn't just about appearance — it's about efficiency, turnaround time, and bottom-line results. Discover how today's digital color tools are transforming the repair process from guesswork to precision.

Read More →
Ad Loading...
Maintenance•by Staff•September 14, 2026

Wrong Repair Prompts Recall of Freightliner, Western Star 4x2 Trucks

DTNA is recalling more than 2,400 trucks that received an incompatible software fix instead of the hardware repair required to address brake valve corrosion.

Read More →