You can't! The relevant state departments clearly stipulate that lithium batteries for bicycles cannot be charged at home to avoid danger. Electric bicycle lithium battery charging, must be in good ventilation, no flammable and explosive products, because the lithium battery chemical characteristics are active, improper charging, easy to burn explosion, it is not allowed to charge at home.
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It is not safe to charge lithium batteries at home, because the environment during the charging process of lithium batteries can not dissipate heat in time, the internal temperature is high, exceeding the normal working temperature of lithium batteries, causing the melting or contraction of organic matter inside the battery, and then causing the positive and negative short-circuiting of the battery, and the spontaneous combustion explosion caused by the battery short circuit.