Does ETC need to be connected to a power source?

[CarmenRose]

Installing ETC does not require an external power connection as it uses its own built-in power source. The ETC electronic tag consumes power, but it does not need to be charged during normal use because there is a solar panel on the back of the battery that can charge it automatically. During installation, it is necessary to avoid the black areas on the windshield. The built-in power source of ETC typically has a lifespan of 3-5 years. ETC stands for Electronic-Toll-Collection, meaning electronic toll collection system. To apply for ETC, you need to provide the original and photocopy of the vehicle owner's valid ID card and 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 with the most recent annual inspection stamp. Additionally, a bank card for deducting highway tolls is needed. 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: 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; and the vehicle that needs to be equipped with ETC. How ETC works: The onboard electronic tag installed on the vehicle's windshield communicates with the microwave antenna in the ETC lane at the toll station. Using computer networking technology, it settles the toll with the bank in the background, allowing the vehicle to pass through highway or bridge toll stations without stopping to pay. Benefits of installing ETC: Time-saving: Avoid the hassle of waiting in line; Green and eco-friendly: Low-carbon solution, as vehicles pass through toll stations without stopping, reducing noise and exhaust emissions; Cost-saving: Reduces vehicle start-up and braking frequency, minimizing wear and fuel consumption. Users can also enjoy toll discounts; Efficiency improvement: ETC lanes can theoretically increase passing efficiency by 2-3 times, making traditional ETC more updated, faster, and higher-tech. Compared to license plate payment, ETC technology is more mature and advantageous.

[CoreyDella]

When I installed the ETC device in my car before, I was also worried about wiring issues, but it turned out to be unnecessary! The ETC device comes with a small solar panel and can automatically charge when installed on the front windshield. I specifically observed that when the car was parked in an open parking lot, that little black block was quietly absorbing sunlight. Of course, if the car is parked in a basement for several weeks in a row or has a metal explosion-proof film that blocks the light, the battery might run out. But such cases are rare, and most people's ETC devices can last for years without any attention. If it really runs out of power, don’t panic—just drive it out into the sun for two hours, and it will come back to life. It’s much more hassle-free than the old devices that had to be plugged into the cigarette lighter.

[Makayla]

The ETC device comes with its own battery and is powered by a solar panel on the top, which is really convenient. When I installed mine, the staff just stuck it onto the windshield—no wiring needed at all. During daily driving, sunlight through the glass keeps the battery charged, and even the sunlight at a red light is enough. There’s just one thing to watch out for: if your car is parked in an underground garage for a long time, the solar panel might drain the battery after three months without light. In that case, just move the car into the sun for a few hours—no need for special wiring. The newer models even have Bluetooth, so you can check the battery level with your phone, which is pretty handy.

[VeraMarie]

When installing the ETC, I specifically asked the technician if it needed a power cable. He said all current devices are solar-powered models. Just stick it on the dotted area of the windshield, and it charges naturally while driving. I've used this device for over two years without even seeing a low-battery warning. The only thing to watch out for is not to apply window film or place sunshades on the solar panel, as blocking light affects charging efficiency. A friend once had their ETC run out of power from long-term underground parking, and later got a replacement from the bank. The maintenance guy suggested taking the car out for sunlight exposure at least once per quarter—no need for wired charging at all.

[McEvelyn]

My ETC has been stuck on the windshield for three years without ever needing to be plugged in. It operates on an embedded battery, while the solar panel on the roof handles charging. Remember, choosing the right installation spot is crucial—don’t place it too close to the edge of the roof, or the wipers won’t reach it and it could block sunlight. I used to worry about weak winter sunlight draining the battery, but even on mornings below -10°C, it still triggers the barrier lift. The only exception was my friend’s older ETC model from five or six years ago, which required charging via the cigarette lighter—banks phased those out long ago. Newer devices come with a low-battery warning light; just drive out to sunbathe when it flashes red, no wiring needed.

[ZoeAnn]

The wireless design of ETC is so user-friendly that I got it installed in just ten minutes. The solar panel on the windshield automatically charges every day, even utilizing scattered light on hazy days. The device is powered by an internal button battery, and I specifically asked customer service—they said the theoretical lifespan is five years. However, cars parked long-term in underground garages might run out of power in about two years. The solution is super simple: just park the car in an outdoor spot for half an hour before work—way more convenient than a charging cable. If the battery is completely dead and can't be detected, many ETCs now support Bluetooth wake-up via a mobile app, eliminating even the need for solar charging.