Many battery products of enterprises can achieve normal discharge at low temperature, but at the same temperature, it is difficult to achieve normal charging, or even unable to charge. When Li+ is embedded into graphite materials, the first step is to de-solvation, which consumes a certain amount of energy and prevents Li+ from diffusing into graphite.  On the contrary,  

Li+ in the graphite material into the solution, there will be a solvation process, and solvation does not consume energy, Li+ can quickly get out of graphite. Therefore, the acceptability of charge of graphite material is obviously inferior to that of discharge.  

Low temperature environment, lithium battery charging has a certain risk.  Because as the temperature drops, the dynamic properties of the graphite anode get worse, and during the charging process, The electrochemical polarization of the anode is obviously intensified, and the precipitated lithium metal is easy to form lithium dendrites, break through the diaphragm and lead to short circuit of the anode and cathode.   

Try to avoid charging lithium-ion batteries at low temperatures.  When the battery must be charged at low temperature, low current (slow charge) should be selected as far as possible to charge the lithium-ion battery.  

After charging, the lithium ion battery is fully used to ensure that the metal lithium precipitated from the anode can react with graphite and be re-embedded into the graphite cathode.  

The exploration and research on low temperature resistance of batteries by enterprises and scientific research institutions mainly focus on the process improvement of existing anode and cathode materials. And by raising the local ambient temperature of the battery to create conditions for the battery to work at low temperature.  With the further development of technology, lithium battery in low temperature environment will have a further breakthrough.