Well thats nice. The ability to enchant IC2 tools via exploit is gone in 1.5.1. Thats why I use Tinkers Construct now instead.
Meh Oh well I'll have to find a new best friend. On the topic of the exploits of adding enchantments to IC2 things I personally do not consider them exploits, they are tools and armor and enchantments were added for tools and armor the simple fact that they can be recharged is balanced by the cost of the mats like the gravchest plate for example.
It really doesn't matter what we think but personally I think its a mistake calling them bugs/exploits simply because they are in fact tools and armor.