For my first 8 months I had 4 JoyeTech eGo platinum finish batteries in rotation. I still have them and still use them on occasion. Zero plating problems on the batteries bodies, the switch area or the covers. Heck, not even a problem with my el cheapo Riva stainless batteries.
In contrast it was kind of annoying to see the plating wearing off the EPower switches on the first day of use.
In contrast it was kind of annoying to see the plating wearing off the EPower switches on the first day of use.