<P> The Switch offers dual - band 802.11 ac wireless connectivity and is compliant with 802.11 a / b / g / n / ac modes . Up to eight Switch Consoles can be connected in a wireless ad hoc network for local multiplayer games, and multiple players can play on each of the connected Switches . In the case of at least one game, Splatoon 2, ten Switches can connect in the ad hoc network, though only eight can play directly while the other two can watch as spectators . The Switch uses Bluetooth 4.1 for wireless communication between the console and its controllers . Users can purchase a third - party USB LAN adapter for wired connectivity when the Console is docked for TV mode . Nintendo's own Wii LAN Adapter accessory is also compatible . </P> <P> The Switch is primarily powered in portable mode by a non-removable 4310 mAh, 3.7 V Lithium - ion rechargeable battery . The battery life is estimated to be between 2.5 and 6.5 hours, depending on the software being used . Nintendo gives the example of The Legend of Zelda: Breath of the Wild supporting approximately three hours of battery life . The battery can be charged either while in the Dock, or through a standard USB - C connector on the Console . The estimated recharge time while the unit is in sleep mode is about 3 hours . Nintendo offers the means for replacing batteries through its customer support . Each Joy - Con has its own non-removable 525 mAh, 3.7 V Lithium - ion battery separate from the Console, with an estimated twenty - hour lifespan . These batteries are automatically charged if they are attached to the Console while it is charging itself . Additional accessories have other means to charge the Joy - Con . While the basic Joy - Con Grip that ships with the Switch does not offer charging capabilities, a separate premium Joy - Con Grip includes a USB - C connector port that can be used to charge the Joy - Con batteries while they are connected to this Grip . </P> <P> The Switch includes 32 GB of internal storage, and can be expanded up to 2 TB using a microSD, a microSDHC or a microSDXC card . If the microSD card is used, the Switch will only store game save data on the internal memory, leaving data that can be re-acquired on the microSD card . Save data will always be stored on the console, regardless if the source is a physical Game Card or a digital download copy . At launch, there was no way to transfer save files from the internal memory to the microSD card or another Switch console, though save game and profile transfers between Switch consoles were added in a system's 4.0. 0 update in October 2017 . While microSD and microSDHC support was available at launch, microSDXC card support was later added to device's software via a system update . The Switch does not support external storage units at launch, but Nintendo stated that they were looking into adding this feature in the future . </P> <P> The Switch console contains a 3.5 mm headphone jack . The unit does not directly support Bluetooth wireless headphones, though they can be connected with third - party wireless adapters via the headphone jack . A system update in October 2017 enabled support for wireless USB headphones when the receiver is connected to the USB port on the console . </P>

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