prolong lithium-ion battery's life

prolong lithium-ion battery's life (四)

Longevity of high-power lithium-ionGenerally speaking, batteries live longer if treated in a

gentle manner. High charge voltages, excessive charge rate and extreme load conditions will

have a negative effect and shorten the battery life. This also applies to high current rate lithium-

ion batteries. Not only is it better to charge lithium-ion battery at a slower charge rate, high

discharge rates also contribute the extra wear and tear. Figure 3 shows the cycle life as a

function of charge and discharge rates. Observe the good laboratory performance if the battery

is charged and discharged at 1C. (A 0.5C charge and discharge would further improve this rating.)
Figure 3: Longevity of lithium-ion as a function of charge and discharge rates. A moderate

charge and discharge puts less stress on the battery, resulting in a longer cycle life.Battery

experts agree that the life of lithium-ion depends on other factors than charge and discharge

rates. Even though incremental improvements can be achieved with careful use of the battery,

our environment and the services required are not always conducive to achieve optimal battery

life. The longevity of a battery is often a direct result of the environmental stresses applied.