|Primary caster||Nanoha Takamachi|
|Japanese name||Ａ.Ｃ.Ｓドライバー |
(Ē Shī Esu Doraibā)
|First app.||StrikerS (ep.22)|
A.C.S Driver (Ａ.Ｃ.Ｓドライバー Ē Shī Esu Doraibā) is Nanoha Takamachi's spell to expand fully the Strike Flame under Raising Heart Exelion's Exceed Mode, and perform acceleration-charge-strike attack with the help of the Accelerate Charge System. It is classified as an "energy blade generation + flight support strengthening" spell.
With command phrase "Charge!", Raising Heart's end tip releases a stream of mana to boost Nanoha's flying speed for the charge attack. A combination of the heavy armor, acceleration charge and the offensive field generated by the Strike Flame, A.C.S Driver can destroy the targets around in a flight, without any physical contact.
The proper full name of the spell will be Accelerate Charge System Driver.