First of all, when was chidori transformed into lightning? I mean yeah kakashi was said to cut through ligthning but what the hell has that to do with chakra transforming into electricity?. Chidori was nothing but a lot of chakra in one part of the body. You release that chakra in a burst (with something called body activation, still thinking about this) to get the destructive power.
Now appears that that chakra burst is released through all the body (im not even going to say how much chakra this thing could burn, or the strain to the body, if chidori in one hand was painful and give lots of strain imagine that in all the body). It should be just chakra so yeah it can throw you back but electrifing? what the hell has electricity on a sword to do with it being able of cutting kunais like butter? Chidori transformed into electricity and if its used on a sword it becomes laser?