Servos and ZipZap spell

So i have finally built a Servo in my household with an Alien and a Spellcaster, and i realised that when the Servo gets shocked with electricity their charge meter instantly fills up so i found that a great little feature, and it reminded me of the Zipzap spell Spellcasters have, and i got my Spellcaster to zipzap the Servo when his charge was getting low, but all it did was daze the robot. I would love if the gurus would update it so the ZipZap spell can fill their charge up.