Battle Energy

  is a new addition in Bloons Tower Defense Battles. The player can also spend 2 to use the Spy Ability to see what towers your opponent is using (exclusive to older versions), and by spending 1, you can either roll a random tower (iOS,Android and PC), which will allow you to use towers you have not unlocked, or use a 5th tower (web). Every 12 minutes, 1 is replenished, even when the game is closed. A bug can prevent energy recharging until you reload the page.

Trivia

 * There are numerous energy boosting and replenishing items in the store.
 * In Bloons TD Battles iOS, Android and computer Energy is used for getting bonus towers and using powers in game.
 * In Bloons Td Battles IOS, Android and Computer, the Extra Battle Slot is a Bonus fourth tower, unlike Bloons TD Battles where you may choose a fifth tower.
 * In Flash versions, the player will need wait for 10 hours to refund your 50, provided that they run out of Battle Energy.
 * In Mobile versions, the player will need to wait ? hours to refund your 20, provided that they run out of Battle Energy.