What does it mean when the Wuling Hongguang mini battery pack is heating up?

[PeterFitz]

When the Wuling Hongguang mini battery pack is heating up, it means that after the battery is fully charged, the battery pack will continue to maintain its temperature. You can simply unplug it and drive directly when using the car, which helps to prevent the battery from cooling down and affecting the range. Taking the 2021 Wuling Hongguang miniev as an example, it belongs to the microcar category with body dimensions of 2920mm in length, 1493mm in width, and 1621mm in height, with a wheelbase of 1940mm and a curb weight of 665kg. The 2021 Wuling Hongguang miniev features a MacPherson strut independent front suspension and a multi-link non-independent rear suspension. It is equipped with a front permanent magnet synchronous motor, with a total motor power of 20kw and a total motor torque of 85nm, paired with a 1-speed single-speed transmission.

[LeOmar]

My Wuling Hongguang Mini displays this prompt, and my friend told me it means the battery is preheating, especially in cold weather. The system automatically activates the heating function to maintain stable battery performance. For example, lithium-ion batteries tend to discharge poorly in low temperatures. Preheating the battery before driving or while parked in winter helps restore it to normal operating temperature, avoiding sudden range drops or starting difficulties. I also noticed that if I use the mobile app to start preheating in advance and charge for about ten minutes before driving, the car runs more smoothly, and the battery life improves. However, there's no need to worry—this is a normal design for most electric vehicles. But if the prompt appears frequently or the heating lasts too long, it’s best to visit a 4S shop to check if there’s a fault in the battery management system. Usually, just avoid parking in extremely cold environments for extended periods, and it shouldn’t be a big issue. Safety first.

[CeciliaFitz]

Having driven an electric vehicle for many years, I know this prompt indicates the battery thermal management system is at work. The battery pack heating in the Wuling Hongguang Mini is designed to optimize lithium battery performance in cold weather. When temperatures drop too low, electrochemical reactions slow down, so the system automatically activates heating elements to raise the temperature to the ideal range, ensuring smooth acceleration and charging efficiency. From my actual tests, the full-charge range after heating is noticeably longer than without heating, especially reassuring for long trips at zero degrees Celsius, though it does consume some extra power. I recommend preheating in winter. Manual activation is also possible via the center console – just don't ignore battery temperature warnings. Occasional abnormal heating may require relay checks or software updates to fix, which is quite important for maintenance.

[LaSilas]

Don't panic when you see the battery pack heating prompt while driving; it's a normal protection mechanism. It indicates the system is preheating the battery in cold weather to prevent excessive discharge or safety hazards. I've encountered this in freezing conditions before—after heating, the battery worked normally, and the temperature rise helped avoid startup issues. If the heating persists, consult a professional to check if the control module is functioning properly, ensuring driving safety.