Battery Pack

The Battery Pack is a Hardmode accessory. Whenever the player takes damage, its meter will increase, capping out at 900 damage. The player will begin to glow red at this stage. When they activate the Battery Pack (default key B), they will gain the following:
 * 10% damage increase
 * 25% movement speed increase
 * 15% attack speed increase
 * 50 max health
 * Hunter, Night Vision and Swiftness buffs
 * 5 defense