Basic Maintenance: Lithium Battery

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I have a friend with an electric car. He seldom charges the battery above 85% capacity. I forget exactly why, but it has to do with extending its life.

With lithium batteries, it takes a lot more time to charge to 100% than just 80%. That last 20% is really time consuming.

Going to a 100% also stresses the battery and will lesson its useful life if done frequently.

Many people believe you can offset the loss of 20% by being able to increase the number of charging cycles because the battery last longer.