Definition:
A lithium-ion battery or Li-ion battery, are rechargable . The batteries are popularly useful in aerospace, also in military, portable electronics and electric vehicles.
In the batteries, the lithium ions, during discharge move from the negative electrode to the positive electrode through an electrode. And back while charging. Lithium is present at the positive electrode and graphite at the negative electrode.
Properties of Lithium ion Batteries:
The battery shows high energy density, low discharge , therefore they can be hazardous as they contain flammable electrolytes.
When not charged properly leads to explosion causing damage.
Lithium –ion batteries show stability and can recharged multiple times. in addition, they tend to have a higher energy density, voltage capacity and lower self-discharge rate than other rechargeable batteries.
Therefore, this makes for better power efficiency as a single cell has longer charge retention than other battery types
Despite its overall advantages, lithium–ion has its drawbacks. It is fragile and requires a protection circuit to maintain safe operation.
However when,built into each pack , the protection circuit limits the peak voltage, and prevents voltage from droping low on discharge.
The estimated life of the battery is two to three years or 300 to 500 charge cycles.
One charge cycle is a period of use from fully charged, to fully discharged, and fully recharged again
batteries become useless when not used for a long time.
Under normal conditions, the factory standard charge of the pack is 30%-40%.
The batteries are lightweight as compared to other rechargeable batteries. It has high-energy density which means it can hold a high amount of energy.
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