Button type doesn't tell you anything.
I have a true Joyetec eGo-C (complete with logo) and a eGo-type battery I bought from Litecig USA (has their name on the bottom plate) and both buttons are the same. Both batteries are 650ma but the one from Litecig seems to last a little longer. The one from Litecig has the 5-click on/off but doesn't have the color-changing voltage indication. The one from Litecig is about $5 cheaper. I'll be buying more of these from Litecig.
I have a true Joyetec eGo-C (complete with logo) and a eGo-type battery I bought from Litecig USA (has their name on the bottom plate) and both buttons are the same. Both batteries are 650ma but the one from Litecig seems to last a little longer. The one from Litecig has the 5-click on/off but doesn't have the color-changing voltage indication. The one from Litecig is about $5 cheaper. I'll be buying more of these from Litecig.