Just curious that if I could build a device that would allow me to connect an eGo or Vision Spinner 2 type battery to a charger like a Nitecore Intellicharger i4 that it would work safely and efficiently in place of the usual USB charger? I have an idea as to how to make the connection but I wanted to get some feedback on the idea before I actually proceed to build it. I admit that I am no expert when it comes to Li-ion batteries but my goal is to be able to charge the "stick" type batteries that I own in a faster and safer manner than the seemingly low tech USB chargers. Thanks for any input offered.