Energy Shield

Energy Shield is a Power-Up in Sky Force Anniversary/2014

Details
Energy shield can be activated on PC and Console by pressing it's respective button, and on Mobile by lifting off your finger. It can only be activated if it is unlocked and has at least one charge. While activated, a charge will be spent, your plane is invulnerable to damage, only vulnerable to the Arachnotron's Super Laser. It's useful if you need to ram something, escape damage, or simply if you need to be careful. While flying through the sky before a stage starts, you can charge it using stars. One free charge is provided if you have Energy Shield to Begin With. You can carry up to five charges at a time, and charges can be found from boxes and ground defenses.