On the day after the storm, you'll acquire a battery pack from it.
Battery packs can sometimes be purchased from the [[Traveling Cart]] for {{tprice|500}} and can be sold to Robin at the [[Carpenter's Shop]]. Very rarely, a Battery Pack can be dropped by breaking boxes or crates in the [[Skull Cavern]]. They may also be dropped by [[Bats|Iridium Bats]] (5% chance).
==Crafting==