Open Circuit Voltage OCV: When the battery is not discharged, the potential difference between the two poles is referred to as an open circuit voltage. The open circuit voltage of the battery can be varied according to the material of the battery, the negative electrode and the electrolytic solution. If the battery is positive, the negative electrode material is exactly the same, then the geometric structure varies regardless of the volume of the battery, the opening voltage is the same.
Over discharge: If the battery exceeds the termination voltage value of the battery discharge, it may cause the battery to increase the pressure, the reversibility of the battery, the reversibility of the negative electrode active material, causes the battery. The capacity is significantly reduced.
Depth of Discharge DOD: During battery use, the capacity of the battery accounted for a percentage of its rated capacity, called discharge depth. The high and low discharge depth is deeply related. The deeper the discharge depth of the secondary battery, the shorter the life of its charging, so it should be avoided as much as possible to avoid depth discharge.
Over Charge: When the battery is charged, if it continues to charge, if it continues to charge, it may cause the battery to rise, the battery deformation, leakage night, etc., the performance of the battery will also be significantly reduced and damaged.
Energy Density: Electrical energy released by the average unit volume or mass of the battery. Under the same volume, the energy density of the lithium-ion battery is 2.5 times the nickel-cadmium battery, which is 1.8 times that of the nickel-hydrogen battery, and thus the lithium ion battery is more than nickel-cadmium and nickel-hydrogen batteries in the case of equal cell capacity. The volume is smaller and the weight is lighter.
Self Discharge: The battery will cause electricity loss due to various reasons due to various reasons. If it is calculated in units of one month, the lithium ion battery self-discharge is about 1% -2%, and the nickel-hydrogen battery is from about 3% to 5%.
Cycle Life: The rechargeable battery is gradually declined to 60% -80% of the initial capacity under repeated charge discharge.
Cut-Off Discharge Voltage: When the battery is discharged, the voltage drops to the lowest operating voltage value of the battery should not continue to discharge. Depending on the type of battery type and different discharge conditions, the requirements for the capacity and life of the battery are also different, so the termination voltage of the specified battery discharge is also different.
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