Have you ever had such moments of crash in winter
Half an hour in the middle of the cold wind, the queue finally picked up a fast-filled stake, so it was slower to charge than a snail to charge 20% of its electricity in an hour; and even more ridiculously, it showed that it was full, not a few kilometers away, and that it went down like a roller coaster, and it was not charged with electricity, but with "virtual power"
A few days ago, i had a huge catch: after work, i deliberately went around to the filling station, and the freezer was frozen for 1. 5 hours, leaving only 30 per cent to 70 per cent, leaving 50 per cent at home, which was so inefficient。
Then i asked the old man at the garage to know that the winter charge wasn't "just stickin' a gun and waitin' for it to be full" and that the timing was more important than anything! The data from a new energy vehicle testing centre for the winter of 2025 show that selecting four gold recharge periods, fast charge efficiency increases by 37 per cent directly, not only saving time but also making batteries more durable。
Today, we'll talk about the winter charge and say goodbye to the nightmare of "two hours of charge, three kilometers"
The top grouping data: the december 2025 report of the chinese institute of automotive engineering shows that 80 per cent of the electric vehicle owners are charged to a pit during the winter, that it takes an average of 40 minutes to charge each charge compared to the normal temperature, and that 30 per cent of the car owners are responsible for an accelerated decline in battery capacity due to the inappropriate charging method. To be honest, it's not the winter of a tram, it's the “gold time” you didn't find for charging。
First of all, understand: why is the winter charge so slow? The battery is hibernation
If you want to pick up the charge time, you have to understand the causes of the slow charge in winter. Actually, the battery is like a hibernation bear in winter, and it's so low。
Professionals say that electric battery recharges by the movement of ions in electrolytic fluids, which at low temperatures make electrolytic fluids as sticky as honey in winter, ions inert, and charging efficiency is naturally reduced. The measured data show that temperatures are below 0°c, that the actual capacity of lithium batteries is only 70 - 80% below constant temperatures, and lead-acid batteries are worse, falling directly to 60 - 70%。
Even worse, the battery is also injured by forced charging at low temperatures. For example, in the open-air environment of -10°c, there is a “small crystal” of lithium crystals inside the battery, which will puncture the cell diaphragm over the long term, with a light reduction in water capacity, which may trigger short circuits and fear。
Many of the drivers mistakenly assumed that the charger was “fuller” and that it was a mistake. In winter chargers jump green lamps, batteries tend to have only about 90 per cent of their actual capacity, and excessive floats can decompose electrolytic fluids and accelerate battery ageing. It's like pouring hot water on a frozen man, not only because he can't drink it, but because he can burn himself。
Two, that's the point! Four prime charge time periods, full speed
Combined with empirical data and the experience of the old drivers, these four periods of charge, which are fast and protective of batteries, can increase efficiency by 37 per cent, and can be measured effectively
Period 1: within 30 minutes of flight (the battery is most “active” while the heat is filling)
This is the king's bombing time, which is charged in winter! Batteries naturally produce heat during the course of a tram, when the temperature is usually 10-25°c, which is the optimal temperature range for charging. It's like when people heat up after exercise and eat anything, and when batteries are hot, they charge more。
It has been measured that charging is 10-15 per cent more than after one hour of static operation and that the capacity can stabilize above 80 kw; and that when cooling is refilled, it tends to be only around 40 kw, twice the power gap. I'm going home from work and i'm going straight to the garage to charge the charge, and without waiting for the freeze, i can charge from 30 to 60 per cent in 20 minutes, which is half the time saved。
Note: if the battery is above 45°c at a high speed of more than one hour in a row or climbs a long slope, it should not be charged immediately, with a 10-to-20-minute cooling first, otherwise the high temperature + charge will accelerate the aging of the battery。
Period 2: daytime 10 - 16:00 (highest temperature, no “difficult” charge)
In winter, the sun is not much warm, but it can raise a little bit of ambient temperature. Daytime between 10 and 16 is the highest temperature in the day, and even open charging is much more efficient than sooner or later。
Data show that this period is 20-30 per cent faster than the low-temperature period in the morning. For example, i was charged at 5 a. M., only 25 per cent for an hour; at 12 noon, 40 per cent for the same hour, the difference is clear. If available during the day, it would not only be efficient, but also avoid a line at night。
Attention: don't charge the sun in the sun! Although the temperature of the winter sun will not be too high, the battery will be better protected if the vehicle is parked in the open sun and moved to the shade for five minutes, before the gun is charged。
Period 3: 1 hour before departure (preheated, with no delay)
If a long trip was to take place the next day, it would be wise to charge one hour before departure. A number of new energy vehicles support mobile phones to remotely turn on the battery preheating, which starts 30 minutes in advance, raising the temperature of the battery to more than 5°c, and then plugs the gun to a high point, with direct efficiency。
The last time i went to the surrounding city, i used the app preheated batteries before i left, and then went to the filling station to recharacterize from 50% to 80% in 30 minutes, with a steady power of 90kw, much faster than without preheating. Also, when charged, the batteries are hot and continue, and there is no “too little to run”。
Note: the technical parameters for battery preheating in the new energy vehicle type need to be based on the ministry of industry and communications bulletin, with slight variations in the way the brands are operated, with an advance look at the vehicle instructions。
Period 4: night valley hour (23:00 a. M. The following day, save money but “sweet”
This period is better than “lower” and cereal electricity is generally half as cheap as peak electricity and suitable for the owner of a private charger. At night, however, the temperature is low, the direct charge is inefficient and the battery is injured, so the temperature must be kept warm。
Correct practice: first remotely activate the battery preheating, or park the car in the garage (temperature cylindrium-5°c) before plugging the gun into charge. In the case of open parking, the vehicle can be covered with wind jackets to reduce the heat loss and charge efficiency increases of about 15 per cent. My neighborhood has a parking garage at 11 p. M., loaded to 80% automatic stop, saves money and doesn't delay the next day. Perfect
Note: valley-time charge is too full to charge 80-90 per cent, which accelerates battery ageing over 10 hours。
Iii. Except for the right time, these five techniques allow charging efficiency to be added
Picking the right time is just the first step, with these little skills. Fast-charge efficiency can be upgraded and batteries more durable
A “preheating” battery before charge: a vehicle model without a long-range preheating function can activate a vehicle with a warm wind of 5 minutes to raise the temperature of the battery and charge it; or a three-to-five-minute (non-start charge) power is connected to the recharge pole, using the charge point electric preheat battery, to display the temperature of the battery at 0°c and then to charge it。
2. Pre-selection of a garage/covered charger: the ambient temperature of the underground garage is 5-10°c higher than that of the open air, and recharge efficiency is about 40% higher. If there is no underground garage, the selection of charging stakes with wind sheds can also reduce the impact of low temperatures。
3. Lightness, with no charge: the risk of loss of electricity damage increases significantly when the amount of battery power is less than 20 per cent in winter. It is recommended that power levels be reduced to 30-40 per cent, recharged to 80-90 per cent, which will avoid deep discharge batteries and ensure recharge efficiency (highest between 20-80 per cent)。
Reduced use of public accelerator and emergency charge to 80 per cent will cease: large public accelerators generate large amounts of heat at low temperatures and long-term use accelerates battery decay. Every day, as slow as possible, emergency response stops at 80 per cent and does not。
5. Use original chargers to reject impurities: the voltage of impurities is unstable and can easily lead to dissatisfaction or overload, causing damage not only to batteries but also to safety risks. The winter charge had to be made with the original charger, damaging the purchase of the same brand-specific authentic。
Iv. Guide to the hole: these four wrong recharge methods, do not commit them
A lot of people charge slow and the batteries are bad because of the pits
Pipe 1: low-temperature open-air direct filling. - under 5°c open-air charge, with very low battery activity, not only slow but also producing lithium crystals and damaging batteries. If there is no condition to enter the garage, at least use a wind jacket to block it or preheat it。
Pipe 2: recharge when electricity is depleted. This is the “fatal error” of charging in winter. When the amount of power is less than 10 per cent, insoluble crystals occur within the battery, leading to permanent decay of capacity and even short circuits. Remember, it's better to charge in winter than to eat more。
Pipe 3: heating with cotton packaged batteries when charged. In order to keep the batteries “heated”, cotton is used, clothing is wrapped in a battery or charger, and the heat is not distributed, not only to burn the chargers, but also to cause a fire, which is simply self-incineration。
Pocket 4: a constant charge is applied throughout the night. The charger jumps the green light, and the battery is already largely full and continues to float for more than 10 hours, allowing the electrolyte to decompose and reduce the battery life. It is recommended that a time charge be set, or that the power be cut manually at 80%。
V. Special scenarios: how can extreme temperatures (<-20°c) be charged
If you encounter extreme temperatures of less than 20°c, the normal charge method may not work. Repeat 2-3 times to recharge the battery after the temperature has recovered, with an approximate success rate。
If the vehicle is idle for more than seven days, it is recommended that the power be maintained at 50 to 70 per cent and that the vehicle be activated and charged to the zone every 15 days to prevent a deep battery deficit. I traveled 10 days last winter, and i came back and found that the car was out of power, and the charger became less efficient, and later i realized it was a deep failure。
In conclusion, the core of the winter charge is “to find the right temperature, to catch the right time”. Bearing in mind the four golden periods, pre-heat and temperature protection will not only increase speed efficiency by 37 per cent, but also extend battery life, as well as ease and safety in driving electric cars in winter。
What's wrong with your winter charge? Do you have your own little charger? Let's talk in the comment section and get more people out of here
The data are synthesized from the december 2025 report of the chinese institute of automotive engineering, the winter measurements of a new energy vehicle testing centre and the pacific vehicle recharge guide; the technical parameters related to the new energy vehicle type are covered in the paper, which is based on the ministry of industry and communications bulletin。
