I have 6 (six) brand new 7.2v, 2600mAh Li-ion batteries for Phase One backs. These are fresh and brand new. I use four identical batteries myself, and they appear the same as the two that I received with my Phase One back.
I'll sell all 6 for $50 plus $6.00 for shipping by USPS Priority Mail to continental US addresses. So just $56 gets you all six batteries. Such a deal! Contact me by PM or email (joe at joecolsonphotography dot com). Thanks.