What is the voltage of the Roewe i5 USB interface?
3 Answers
The voltage of the Roewe i5 USB interface is 5 volts. Its USB interfaces are located below the central control screen, in front of the gear shift, and behind the rearview mirror. Taking the 2020 Roewe i5 as an example, it belongs to the compact car category with body dimensions of: length 4601mm, width 1818mm, height 1489mm, a wheelbase of 2680mm, a fuel tank capacity of 45 liters, and a curb weight of 1185kg. The 2020 Roewe i5 features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.5L naturally aspirated engine, delivering a maximum horsepower of 120PS, a maximum power of 88kW, and a maximum torque of 150Nm, paired with a 5-speed manual transmission.
I've been using my Roewe i5 for over three years and frequently charge my phone via its USB port. The port voltage is standard 5V, same as household phone chargers. However, it's worth noting the current output is relatively low, typically around 0.5-1A. Once when I charged while navigating for three hours, it only gained 30% battery. For long trips, I recommend using a cigarette lighter to fast-charger adapter which can deliver 2.4A. The USB port is conveniently located in front of the gearshift, though prolonged charging causes slight heating. Also, fellow drivers should avoid charging tablets or other high-power devices - insufficient power may damage batteries.
As an automotive circuit enthusiast, I have tested the USB output of the Roewe i5. The voltage remains stable within the range of 5V±0.25V, complying with international USB standards. Professional instruments measured an open-circuit voltage of 5.1V, which drops to around 4.8V under load. The nominal current is 1A, but the actual peak reaches 0.8A, indicating the presence of a protection chip inside. By the way, the two front USB ports deliver consistent output voltage, but rear ports (if available) may have lower power output. For those looking to upgrade to fast charging, it's recommended to draw power from the fuse box with modified wiring, but a voltage regulator module should be installed to prevent damage to the vehicle's infotainment system.
