Singapore’s Tesla ERP Solution: Addressing Battery Safety and the Road Ahead
Singapore is moving forward with its next-generation Electronic Road Pricing (ERP) system, slated for full implementation by January 1, 2027. A key component of this upgrade is the On-Board Unit (OBU), which requires a constant power supply to function reliably. This has presented a unique challenge for Tesla owners, as Tesla vehicles don’t inherently provide this continuous power source.
The Power Supply Puzzle and Initial Concerns
The Land Transport Authority (LTA) recognized this issue and, after collaborating with Tesla Singapore, determined that an external battery device was the most viable solution for Tesla vehicles. However, this sparked concerns among Tesla owners. The Tesla Owners Club Singapore voiced their apprehension in early February, specifically regarding the safety of installing external lithium battery systems within the cabin. Their letter highlighted the lack of “visible active cooling or thermal management subsystem” and the potential fire hazard associated with continuously charged lithium batteries.
LTA’s Response: Safety Standards and Non-Continuous Charging
Responding to these concerns, the LTA clarified on February 20th that the external battery devices meet international safety standards for electronic devices. Crucially, the LTA emphasized that these devices do not charge continuously, addressing a primary worry raised by the Tesla Owners Club. The devices are designed to withstand environmental conditions like temperature, humidity, vibration, shock, dust, and water, adhering to standards set by the International Electrotechnical Commission (IEC).
Two Battery Solutions for Different Tesla Models
Singapore is employing a phased approach to OBU and battery installation. Tesla cars delivered with pre-fitted OBUs since December 2, 2024, are equipped with the iRoad Powerpack Pro 12, manufactured by a South Korean company specializing in in-car cameras. For older Tesla models requiring retrofitting starting in January 2026, a customized external battery device developed by Singaporean engineering firm Hope Technik will be used. This customized unit utilizes lithium iron phosphate battery cells, a technology also used by other major electric vehicle manufacturers.
Installation and Cost
The installation of the OBU and external battery system for Teslas is being handled by Indeco Engineers. Importantly, installation is free of charge for owners who complete it within three months of receiving a final reminder from the LTA, with reminders being sent from February 2026. As of the finish of 2025, approximately 4,200 Tesla cars have been fitted with the iRoad model, and 380 with the Hope Technik customized unit. Around 93% of Singapore’s vehicle population – approximately 930,000 vehicles – have been fitted with OBUs.
Beyond Tesla: The Broader Implications for EV Power Management
The situation with Tesla OBUs highlights a broader trend in the electric vehicle (EV) space: the need for robust and safe auxiliary power systems. As EVs develop into more prevalent, ensuring reliable power for onboard systems – beyond just propulsion – will become increasingly crucial. This includes everything from infotainment systems to advanced driver-assistance systems (ADAS) and, as Singapore demonstrates, road tolling infrastructure.
The use of lithium iron phosphate (LiFePO4) batteries, as seen in the Hope Technik unit, is a significant development. LiFePO4 batteries are known for their enhanced thermal stability and longer lifespan compared to traditional lithium-ion batteries, making them a safer choice for applications where continuous operation and safety are paramount.
Future Trends: Integrated Power Solutions and Vehicle-to-Grid (V2G) Technology
Looking ahead, we can anticipate several key trends in EV power management:
- Integrated Power Systems: EV manufacturers will likely integrate more sophisticated power management systems directly into vehicle architecture, eliminating the need for external devices like the OBU battery pack in the future.
- Advanced Battery Chemistries: Research and development into new battery chemistries, such as solid-state batteries, promise even greater energy density, faster charging times, and improved safety.
- Vehicle-to-Grid (V2G) Technology: V2G technology, which allows EVs to not only draw power from the grid but also send it back, could play a role in stabilizing the grid and reducing energy costs. This requires advanced power electronics and control systems.
- Standardized Auxiliary Power Interfaces: The development of standardized interfaces for auxiliary power could simplify the integration of aftermarket devices and ensure compatibility across different EV models.
FAQ
Q: Is the external battery pack safe for my Tesla?
A: Yes, the LTA has confirmed that the external battery packs meet international safety standards and do not charge continuously.
Q: How much does it cost to install the OBU and battery pack?
A: Installation is free if completed within three months of receiving a final reminder from the LTA.
Q: What type of battery is used in the customized Hope Technik unit?
A: It uses lithium iron phosphate (LiFePO4) battery cells.
Q: When will the new ERP system be fully implemented?
A: January 1, 2027.
Did you grasp? As of late 2025, there were 8,635 Teslas registered in Singapore.
Pro Tip: Keep an eye out for the final reminder from the LTA to take advantage of the free installation offer.
Have questions about the new ERP system or the OBU installation process? Share your thoughts in the comments below!
