Battery

The Battery is an explosive in Swamp Attack.

Abilities
When used, the Battery falls into water and electrocutes every foe with lightning arcs within its short range. The zapping attack also slows them.

Strategies
Battery is one of the most powerful explosives. It hits any foe, does an acceptable amount of damage and can stall them, while also rapidly whittling down energy barriers. While it suffers from the return fire issue shared by most projectile explosives, stunning the player briefly in the process and isn't effective on some enemies as well as bosses, it is a solid choice for every level.

Trivia

 * Battery and Alien Gun are the only items capable of electrocution in the entire game.
 * Despite being thrown into the water the Battery can't electrify it.