When the battery is in an open circuit state, the phenomenon of the stored power being consumed spontaneously is called the self-discharge of the battery, also known as the battery’s charge retention capacity.That is, under certain environmental conditions, the battery’s ability to store power is maintained.
In theory, the electrodes of the battery in the state of charge are in a thermodynamically unstable state, and physical or chemical reactions will spontaneously occur inside the battery, resulting in the loss of chemical energy of the battery.
Self-discharge is also one of the important parameters to measure battery performance. Different types of battery self-discharge factors and sizes are the same.The self-discharge rate of lithium batteries is slightly better than that of lead-acid batteries and significantly better than that of nickel-metal hydride batteries.
When a lithium-ion battery is not in use, it will lose some of its charge. This is known as self-discharge and it’s a natural process that occurs with all batteries. Study shows that batteries happens to discharge even faster when the battery isn’t being used properly or stored in suboptimal conditions.
Self-discharge has an impact on how you can use your battery and how long you can store it before it reaches the end of its useful life. The good news is there are some things you can do to slow down the self-discharge rate and get more out of your lithium ion battery, no matter how often you plan to use it. Here are the basics about Lithium Battery Self-discharge.