How Long Does an ETC Battery Last?
3 Answers
Typically, an ETC battery has a lifespan of 3 years. Currently, ETC devices are powered either by solar charging or via a charging cable. If any quality issues arise with the ETC device within the 2-year warranty period, you can have it repaired or replaced for free at an ETC bank service outlet. For wired ETC devices, if they are not used for an extended period, it is recommended to charge them once a month. This helps prevent the ETC battery's lifespan from being affected by self-discharge. There are also solar-powered ETC versions, which do not require deliberate charging if used frequently. ETC stands for Electronic Toll Collection, meaning electronic toll system. To apply for ETC, you need to provide the vehicle owner's valid ID card and the original and photocopy of the vehicle registration certificate. If the application is not made by the owner, the agent's valid ID card is also required. The photocopy of the vehicle registration certificate should include the page stamped with the most recent annual inspection. Additionally, a bank card for deducting highway toll fees is needed. Applicants must be between 18 and 60 years old, and the vehicle must be registered under an individual's name. Documents required for company vehicles: An introduction letter from the vehicle owner (with official seal); photocopy of the organization code certificate or business license (with official seal); original ID card of the agent; original vehicle registration certificate; the vehicle for which ETC is to be installed. Benefits of installing ETC: Time-saving: Avoid the hassle of waiting in line; Green and eco-friendly: Low-carbon, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions; Cost-saving: Reduce costs by minimizing vehicle start and stop frequency, decreasing wear and fuel consumption. Users can also enjoy toll discounts; Efficiency improvement: ETC lanes can theoretically increase traffic efficiency by 2-3 times, making traditional ETC updates faster and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. Precautions for installing ETC: Do not obstruct the view; it is best to install it behind the rearview mirror: Many car models have steeply angled windshields, which can reduce the driver's field of vision. Installing ETC without considering this may increase blind spots for the driver. Installing it behind the rearview mirror on the right side can avoid obstructing the view. Do not interfere with charging: ETC electronic tags require power, but generally, they do not need to be charged or have their batteries replaced, as they have a solar panel on the back for self-charging. Therefore, during installation, avoid the blackened areas on the windshield and positions that might block the solar panel.
The battery life of my ETC device is usually around 5 years, but it depends on how you use it. If you frequently drive on highways and pass through multiple toll stations daily, the battery will drain faster and may need replacement in three to four years. If the car is mostly parked at home with infrequent use, the device can last seven to eight years. My previous ETC card lasted over six years before showing weak signal issues, and I later got it replaced with a new device for free at a service center. The key is to pay attention to the device's indicator light—if it flashes yellow or red, it means the battery is low and needs replacement. Avoid frequently pressing the power button to turn off the device after parking, as it doesn’t save much power and may shorten its lifespan. I recommend having the 4S store check it during annual maintenance to avoid the embarrassment of running out of battery at a toll station.
I think the lithium battery design in ETC devices is quite durable, with an average lifespan of 5 to 7 years. This type of battery isn't the replaceable kind, so once it's depleted, you basically have to replace the whole unit. The main factors affecting battery life are usage frequency and environmental temperature: driving through toll stations daily naturally consumes more power; leaving your car baking in the summer sun also ages the battery faster. I usually try to park in shaded areas to minimize heat damage, and my last ETC battery lasted seven years before failing. Also, avoid frequently turning it on and off—keeping it in standby mode is the most power-efficient. If you notice slow response or failure to recognize at toll stations, it's most likely a battery issue, and you should address it promptly to avoid unexpected toll delays.
