Electric vehicle (EV) batteries are expensive, making up 30–50% of a vehicle's cost. Monitoring their health is critical for reducing downtime, extending lifespan, and saving money. Traditional methods, like inspections and driver feedback, often miss early signs of battery issues, leading to unexpected failures and costly replacements. Telematics changes the game.
Here’s what telematics offers:
- Real-time data: Tracks battery metrics like voltage, temperature, and charge levels 24/7.
- Predictive analytics: Forecasts battery degradation and maintenance needs.
- Cost savings: Identifies faulty cells early, avoiding full battery replacements.
- Reduced downtime: Schedules maintenance proactively, keeping vehicles on the road longer.
For example, platforms like GRS Fleet Telematics provide real-time monitoring and predictive insights starting at £7.99/month. These systems help fleet managers optimise charging habits, reduce unscheduled maintenance, and cut operational costs.
In short, telematics provides the tools to move from reactive fixes to smarter, data-driven decisions, ensuring better performance and lower costs for EV fleets.
What is a Battery Management System BMS? EV Range Prediction, Charging, Safety
1. Manual Fleet Management Methods
Traditional fleet management methods mainly depend on physical inspections and driver feedback. While these methods have been the norm, they fall short when it comes to providing the real-time and predictive insights needed to monitor electric vehicle (EV) battery health effectively.
Real-Time Data Access
Manual methods only provide a snapshot of battery performance at specific intervals. Fleet managers often rely on scheduled physical inspections to evaluate battery health, which means problems may go unnoticed until they result in breakdowns or noticeable performance issues. This lack of continuous monitoring leaves fleets vulnerable to unexpected failures.
Adding to the challenge, there's no standardised way to measure and share EV battery health across different manufacturers. This inconsistency makes it particularly difficult to assess battery condition, especially for used EV buyers in the UK. Industry experts note that creating a uniform standard for battery health reporting remains a significant hurdle.
Predictive Analytics
Manual methods are incapable of predicting battery degradation. Unlike modern approaches that use machine learning and data analysis, traditional methods rely on reactive maintenance. This is a major limitation, particularly when you consider that rapid charging an EV battery more than three times a month can accelerate degradation by up to three times the average rate. Without the ability to monitor charging patterns or link them to battery performance, fleet managers miss the opportunity to address harmful habits before they cause serious damage.
Cost Efficiency
The reliance on diagnostic tools and labour-intensive inspections drives up costs. Without granular battery usage data, fleets may replace batteries prematurely or fail to repair specific cells, leading to unnecessary expenses. In the UK, where labour costs are relatively high, this lack of precision can result in higher long-term costs, even if the upfront investment in technology is lower. Additionally, the inability to optimise charging schedules or predict maintenance needs compounds these inefficiencies.
Impact on Maintenance and Downtime
Fixed-interval maintenance schedules based on time or mileage often lead to two major issues: over-servicing or unexpected failures. Both scenarios can reduce fleet availability. For UK businesses that rely heavily on fleet utilisation, these disruptions can result in lost revenue and unhappy customers. On top of that, the absence of historical data makes it harder to identify recurring problems or trace the root causes of battery issues. Without early warnings, repairs can take longer - especially if parts or specialised technicians aren't immediately available - causing extended downtime during critical periods.
These limitations underline the importance of adopting continuous, data-driven monitoring systems, which telematics solutions are well-equipped to provide.
2. Telematics-Based Battery Monitoring (e.g. GRS Fleet Telematics)

Telematics bridges the gaps left by manual battery monitoring by offering continuous, automated oversight. These systems collect and analyse real-time data, giving fleet managers the tools to extend battery life and cut operational costs. Unlike manual methods, telematics provides a constant flow of actionable insights.
Real-Time Data Access
Telematics platforms monitor key battery metrics like voltage, temperature, state of charge, and fault codes around the clock. This real-time data stream helps fleet managers spot issues such as overheating or rapid wear before they escalate into costly failures.
For example, GRS Fleet Telematics provides instant alerts on critical factors like voltage and fault codes. It also boasts a 91% recovery rate for stolen vehicles, offering added value to UK businesses by ensuring both performance and security.
Telematics systems go beyond basic monitoring by integrating mobile and connected vehicle data. Many platforms provide live state-of-charge updates, charging reports, and automated reminders when battery levels dip below safe thresholds. These features, combined with predictive analytics, allow fleet managers to tackle potential problems before they arise.
Predictive Analytics
Telematics doesn't just show current battery performance; it predicts future issues. By analysing both historical and live data, these systems can estimate battery degradation rates, forecast end-of-life, and validate warranties. This allows fleet operators to schedule maintenance more effectively, reducing the risk of unexpected breakdowns.
Predictive analytics also flag suboptimal charging practices that could harm battery health. By tracking charging patterns, telematics systems alert managers to damaging habits before they cause significant wear.
In 2024, Geotab analysed data from over 10,000 EVs and revealed that telematics-enabled fleets reduced unscheduled maintenance by 15%, thanks to insights into degradation trends and optimised charging schedules.
The XALT Battery Viewer (XBV) is a prime example of predictive analytics in action. It monitors factors like charging status, energy use, cell voltages, and temperature, providing real-time alerts and diagnostic codes. This proactive approach helps fleet operators address issues quickly, reducing downtime and keeping vehicles on the road.
Cost Efficiency
Telematics can save UK fleets significant money by identifying faulty cells early, avoiding the need for full battery replacements. This targeted approach to maintenance can save thousands of pounds per incident.
Automated monitoring also cuts costs by eliminating manual inspections and streamlining charging management. For example, GRS Fleet Telematics offers these tools starting at just £7.99 per month, making advanced battery management affordable for businesses of all sizes. Their dual-tracker technology combines operational insights with security features, ensuring a strong return on investment.
Detailed charging reports add another layer of cost control by reducing the risk of energy fraud. By making unauthorised charging harder to conceal, telematics helps fleet managers maintain tighter oversight of energy expenses.
Impact on Maintenance and Downtime
Telematics transforms maintenance from reactive to proactive. Automated alerts for service needs, fault codes, and battery degradation help fleet managers schedule repairs at convenient times, avoiding disruptions during critical operations.
Minimising unscheduled downtime is crucial for UK businesses that rely on high vehicle availability. With telematics, vehicles spend more time on the road and less time in the shop, boosting service levels and customer satisfaction.
Remote diagnostics further enhance efficiency by allowing many battery issues to be identified and assessed without bringing vehicles back to the depot. This rapid troubleshooting reduces the time between identifying a problem and resolving it, keeping fleets operational when it matters most.
Additionally, the historical data provided by telematics helps pinpoint recurring issues and their root causes. This enables fleet managers to address underlying problems rather than just treating symptoms, ensuring more reliable performance across their EV fleets in the long run.
Advantages and Disadvantages
Weighing the pros and cons of manual versus telematics-based battery monitoring can help refine strategies for managing electric vehicle (EV) fleets. Building on earlier discussions about battery wear, let’s explore how these approaches influence maintenance and operational costs.
Manual Fleet Management: The Traditional Approach
Manual monitoring methods are straightforward and come with low upfront costs, making them a practical choice for smaller fleets or businesses operating on tight budgets. These methods typically involve driver logs and routine inspections, offering a basic level of oversight.
However, manual monitoring has its limitations. Without real-time data, fleet managers often face unexpected breakdowns and extended downtime, as issues are only addressed after they become critical. This reactive approach can lead to inefficiencies in energy use and faster battery deterioration, as charging schedules are rarely optimised without data-driven insights. Additionally, diagnosing problems manually takes longer, further affecting productivity.
Telematics-Based Monitoring: The Data-Driven Solution
Telematics systems bring a new level of efficiency to battery management through continuous, automated tracking. These platforms collect real-time data on voltage, temperature, and state of charge, building a comprehensive picture of battery health.
One major advantage is the ability to schedule proactive maintenance. For instance, XALT Battery Viewer technicians use diagnostic codes to alert fleet operators worldwide about potential problems, providing round-the-clock support. This predictive approach helps prevent costly breakdowns before they occur.
Telematics also offers cost-saving benefits. By monitoring battery performance at the cell level, manufacturers can pinpoint issues and replace individual cells rather than entire battery packs. Considering batteries can make up 30–50% of an EV’s total cost, this targeted maintenance can significantly reduce expenses.
GRS Fleet Telematics exemplifies how affordable telematics can be, with plans starting at just £7.99 per month. Their dual-tracker technology not only enhances operational efficiency but also provides robust security features, including a 91% recovery rate for stolen vehicles. For UK businesses, this combination of benefits delivers a solid return on investment.
Comparative Analysis
The table below highlights the key differences between manual and telematics-based monitoring.
| Aspect | Manual Fleet Management | Telematics-Based Monitoring |
|---|---|---|
| Real-time Data Access | Periodic checks only | Continuous monitoring with instant alerts |
| Predictive Analytics | Not available | Advanced predictions and early warnings |
| Cost Efficiency | Higher operational costs | Targeted maintenance reduces expenses |
| Maintenance Impact | Reactive maintenance | Proactive scheduling minimises downtime |
| Battery Health Insight | Limited visibility | Detailed data and trend analysis |
| Initial Investment | Low upfront costs | Higher initial investment required |
The Drawbacks of Each Approach
Manual fleet management’s biggest drawback is its reactive nature. Without real-time monitoring, warning signs of battery issues often go unnoticed, leading to unexpected failures, longer downtimes, and higher operational costs.
Telematics systems, on the other hand, come with higher upfront expenses, including costs for hardware, software, and cellular connectivity. They also depend on reliable network coverage, which can be a challenge in remote areas. Managing the large volumes of data generated by these systems may require additional training or hiring specialised staff.
Making the Right Choice
Choosing between these approaches depends on fleet size, budget, and operational goals. Smaller fleets with limited resources may find manual methods more accessible initially. However, the long-term costs of reactive maintenance and unexpected failures should not be overlooked.
For those seeking real-time insights and operational efficiency, telematics offers clear advantages despite the higher initial investment. By preventing costly battery replacements, optimising charging schedules, and reducing downtime, these systems often pay for themselves over time.
Modern platforms like GRS Fleet Telematics make advanced monitoring more accessible to businesses of all sizes. With affordable monthly plans and a combination of battery tracking and security features, these solutions help UK businesses overcome traditional challenges and unlock multiple operational benefits.
Conclusion
Telematics-based battery monitoring is reshaping how UK electric vehicle fleets are managed. By providing real-time data and predictive insights, it surpasses manual methods, enabling proactive maintenance and reducing unexpected failures. This approach shifts fleet management from reactive problem-solving to strategic planning, ultimately leading to smoother, more cost-effective operations.
Telematics has become a cornerstone of modern EV fleet management, offering actionable insights that drive smarter maintenance, cut costs, and enhance safety. For instance, platforms like GRS Fleet Telematics offer practical and affordable solutions for continuous monitoring, ensuring fleet managers can stay ahead of potential issues.
GRS Fleet Telematics stands out with plans starting at just £7.99 per month. Their platform combines real-time vehicle tracking with advanced security features, such as dual-tracker technology and an impressive 91% recovery rate for stolen vehicles. This comprehensive system tackles multiple fleet management challenges simultaneously, delivering far more than basic tracking and security.
For fleet managers focusing on sustainability, telematics provides the detailed reporting necessary for CO₂ and ESG compliance. It also helps optimise energy use and may even extend battery lifespan. Access to in-depth data on battery and vehicle health empowers managers to make informed decisions about vehicle redistribution, replacement schedules, and charging strategies.
UK fleet operators looking to reduce costs, minimise downtime, and meet sustainability goals should prioritise telematics-based battery monitoring. While manual methods might appear cheaper at first glance, the long-term costs of reactive maintenance, unexpected breakdowns, and inefficient battery use far exceed the investment in modern monitoring systems.
Platforms like GRS Fleet Telematics make this transition manageable for businesses of all sizes by offering scalable solutions that adapt to growing fleet needs. In today’s competitive market, where operational efficiency directly influences profitability, telematics-based monitoring has become a strategic must-have for forward-thinking fleet managers. Adopting telematics isn’t just about upgrading technology - it’s about ensuring long-term performance and profitability for UK fleets.
FAQs
How does telematics support better monitoring and maintenance of EV batteries compared to traditional methods?
Telematics systems are transforming how we maintain and extend the life of EV batteries, offering real-time data that traditional approaches simply can’t provide. These systems keep an eye on critical factors like battery charge levels, operating temperature, and charging habits, giving fleet managers the tools to spot potential problems early and fine-tune battery performance.
With telematics, businesses gain the ability to track and interpret data trends, enabling smarter charging strategies, preventing overcharging, and ensuring batteries stay within their optimal temperature range. This forward-thinking approach doesn’t just prolong battery life - it also cuts operational costs and boosts overall fleet efficiency.
How can telematics help UK fleet operators save costs by monitoring EV battery health?
Telematics systems are becoming an essential tool for UK fleet operators aiming to cut costs and improve efficiency. By offering detailed insights into the performance and condition of EV batteries, these systems allow for proactive management. Regular monitoring of battery usage, charge cycles, and efficiency helps spot potential problems early, reducing the likelihood of expensive repairs or unplanned downtime.
On top of that, telematics data can be used to fine-tune charging schedules and improve driving habits, which helps extend the life of EV batteries and reduces the need for costly replacements. These systems also support smarter energy management, ensuring fleets run more efficiently and delivering notable savings over time.
How can telematics systems use predictive analytics to minimise downtime and prevent unexpected maintenance for EV fleets?
Telematics systems with predictive analytics are game-changers for keeping EV fleets operating efficiently. These systems constantly track key data points like battery health, charging habits, and usage trends. By doing so, they can spot potential problems early, long before they escalate into major disruptions.
This forward-thinking approach allows fleet operators to plan maintenance during optimal windows, minimising the risk of unexpected breakdowns and the associated costs. On top of that, by fine-tuning charging cycles, telematics systems help maximise battery longevity, ensuring EVs deliver consistent performance over time.

