How long does it take to fully charge the battery of an electric bicycle?

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Update time : 2025-10-15

The charging time of an electric bicycle depends on several factors, including battery capacity, charger power, battery type (lead-acid/lithium-ion), and remaining battery level. The theoretical analysis is as follows:

  Charging time ≈ Battery capacity (Ah) ÷ Charger output current (A) × 1.1~1.2 (efficiency coefficient). For example, for a 48V 12Ah lead-acid battery, the output current of a common 48V 12Ah lead-acid charger is 2A; thus, the charging time ≈ 12Ah ÷ 2A × 1.2 ≈ 7 hours. The same logic applies to lithium-ion batteries.
  The above are all theoretical values. In practice, many other factors need to be considered, such as temperature and the charger’s intelligent charging strategy (after the battery level reaches 80%, it switches to trickle charging mode, which can extend the battery life but increases the charging time).


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