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# Unlike NiCad batteries, lithium-ion batteries should be charged early and often. However, if they are not used for a longer time, they should be brought to a charge level of around 40%. Lithium-ion batteries should never be "deep-cycled" like NiCd batteries.
# Li-ion batteries should be kept cool. Ideally they are stored in a refrigerator. Aging will take its toll much faster at high temperatures. The high temperatures found in cars cause lithium-ion batteries to degrade rapidly.
# Lithium-ion batteries should never be depleted to empty (0%).
# Li-ion batteries should be bought only when needed, because the aging process begins as soon as the battery is manufactured. [citation needed]
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