Talk:AA Plasma Turret/@comment-5989514-20140803100401/@comment-4836864-20140803103358

Say you have a level 1 turret defending your base and you decide to research level 2. Your level 1 turrets do not upgrade to lv 2 automatically. They each require res and thor to upgrade... manually to current research level. If you decided to research straight to 5 then upgrading your lv1 to lv only requires the lv 5 equip cost.

A savings if you wait for max turret level... If you can wait that long.