The AC charging adapter with an 8.4V 3814 DC interface is designed for charging the Cooling Fan Jacket battery pack, which powers the built-in fans in the jacket. This adapter is an important Cooling Fan Jacket Accessories for anyone who wants to ensure that their Cooling Fan Jacket is always fully charged and ready to use.

The AC charging adapter is connected to a standard household AC outlet and then to the Cooling Fan Jacket's battery pack via the 3814 DC interface. The adapter converts the AC power into DC power, which allows the battery pack to be charged efficiently and safely.

The 8.4V rating of the charging adapter is ideal for recharging the Cooling Fan Jacket's battery pack, as it provides the necessary voltage for efficient charging. This ensures that you can quickly and easily recharge the battery pack between uses, so you can enjoy the benefits of the Cooling Fan Jacket for longer periods of time.

Overall, the AC charging adapter with an 8.4V 3814 DC interface is an essential accessory for anyone who wants to use the Cooling Fan Jacket regularly, especially if they spend extended periods of time in hot or humid conditions. With this adapter, you can ensure that your Cooling Fan Jacket battery pack is always fully charged, so you can stay cool and comfortable at all times.