How long does the battery of an ETC device last?

2 Answers
ErinLee
07/28/25 8:50pm
Generally, the battery of an ETC device can last for 3 years under normal usage. For solar-powered ETC devices that are not frequently used, it is recommended to charge them every 3 months to prevent natural discharge of the internal battery. The ETC device has an internal battery and is charged externally via solar power, so it does not require regular charging. ETC stands for Electronic-Toll-Collection, which means electronic toll collection system. To apply for an ETC, the following documents are required: the vehicle owner's valid ID card and vehicle registration certificate (original and photocopy). If the application is handled by a proxy, the proxy's valid ID card is also needed. The photocopy of the vehicle registration certificate should include the page with the most recent annual inspection stamp. Additionally, a bank card for deducting highway tolls is required. Applicants must be between 18 and 60 years old, and the vehicle must be registered under an individual's name. For company vehicles, the required documents include: a letter of introduction from the vehicle owner (with official seal), a photocopy of the organization code certificate or business license (with official seal), the proxy's original ID card, the original vehicle registration certificate, and the vehicle that needs to be equipped with ETC. How ETC works: The vehicle-mounted electronic tag installed on the windshield communicates with the microwave antenna in the ETC lane at the toll station. Using computer networking technology, the system settles the payment with the bank in the background, allowing vehicles to pass through highway or bridge toll stations without stopping to pay the toll. Benefits of installing ETC: Time-saving: Eliminates the hassle of waiting in line. Green and eco-friendly: Reduces noise and exhaust emissions by allowing vehicles to pass through toll stations without stopping. Cost-saving: Reduces vehicle wear and fuel consumption by minimizing the frequency of starting and braking. Users can also enjoy toll discounts. Efficiency improvement: ETC lanes can theoretically increase traffic efficiency by 2-3 times, making traditional ETC systems more advanced and high-tech. Compared to license plate payment, ETC technology is more mature and advantageous.
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SanGianna
08/12/25 1:33am
I was also concerned about the battery issue when I first installed the ETC device, but after driving for over a year, there have been no problems. I asked a mechanic friend, and he said ETC batteries are usually charged by solar power or automatically when the vehicle is started. Under normal use, they can last five to eight years. My own car hasn’t encountered any issues, but I recommend not parking in shady spots for too long to allow the solar panel to charge fully. If the ETC card suddenly can’t be read, it might be due to a depleted battery, requiring a device replacement. Overall, it’s quite durable—no need to constantly worry about battery replacement. Just focus on daily maintenance. If you’re still uneasy, you can periodically visit an ETC service point to check the battery status for preventive maintenance.
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