I think my wife needs one for the office. any suggestions on a good one and where to get it?
Joye makes eGo passthrough units starting at about 15 bucks:
1000mah with passthrough: Joyetech eGo-C 1000mAh USB Pass-through Battery for Electronic Cigarette
I too second on Bill and Mstr Vpng's suggestions. I have both the MVP 2 and the Joyetech 1000 mAh passthroughs. Love the MVP cos it lasts me 3 days of heavy vaping when im out in the woods. Love the passthrough capability and its ability to even charge my phone and other PVs when im out.
Joyetech passthrough eGos are my love. Thin and sleek and not as heavy as the MVP if that is what your wife is looking for. Robust batteries that has lasted me 3 years to today and not a problem ever since i bought them off myvaporstore.com.
Joye makes eGo passthrough units starting at about 15 bucks:
1000mah with passthrough: Joyetech eGo-C 1000mAh USB Pass-through Battery for Electronic Cigarette