EX-99.1 2 d275503dex991.htm EXHIBIT 1

Exhibit 1

Exhibit 1

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of Ultralife Corporation is, and any amendment thereto signed by each of the undersigned shall be, filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Date: December 29, 2011 NGP Energy Technology Partners II, L.P. By: NGP ETP II, L.L.C. Its: General Partner
By:		/s/ Philip J. Deutch
Name: Title:		Philip J. Deutch Authorized Member

NGP ETP II, L.L.C.
By:		/s/ Philip J. Deutch
Name: Title:		Philip J. Deutch Authorized Member

Energy Technology Partners, L.L.C.
By:		/s/ Philip J. Deutch
Name: Title:		Philip J. Deutch Sole Member and Manager

/s/ Philip J. Deutch

Philip J. Deutch