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3.3 It is not fast charge but slow charge. The wall mounted charging box given by the old Tang car is 3.3 kilowatts. The charging power of BYD charging pile is 3.3KW, and the charging voltage of the charging pile is about 380V. The battery capacity is 16.9kWh, and the time from 0 to full charge using the charging pile is 16.9kWh\/3KW=5.6h.