Outdoor gas water heater powered by dry battery

The utility model discloses an outdoor gas water heater powered by a dry battery, which comprises a box body, a burner and a heat exchanger, the burner and the heat exchanger are arranged in the box body, a dry battery pack is arranged in the box body, and the dry battery pack is at least electrically connected with an ignition device in the burner; the box body is also provided with a power connection port and a power supply port, and the power connection port is electrically connected with the power supply port; the power connection port is used for inputting an external power supply, and the power supply port is used for supplying power to an external water pump. According to the outdoor gas water heater, the dry battery pack is arranged in the box body, low-voltage power supply components such as the ignition device in the gas water heater are powered by the dry battery pack, and the external water pump is powered by the external power supply, so that separated power supply of the high-voltage power suppl