Drained Battery applies only to Magic / Melee / Projectile Laser cards, that is, cards that have Laser (damage) type printed on the card's information bar (the bar in the middle). Laser Block (or any other blocks, for that matter), don't have card (damage) type. But yeah, I agree that Drained Battery could be worded better (or have it include Laser Block as well).
Dont think the gut-wrenching malfunctions you get with total certainty whenever you need lasers to work need a buff.
