3KR1100AAU-TRI : 3.6v 1100mAh NiCd battery for Exit signs, Shavers etc.
$ 19.95
3KR1100AA-TRI : 3.6 volt 1100mAh rechargeable Ni-Cd Triangle-shape battery pack for emergency exit signs, Shavers, etc. Includes wire leads. Dimensions: 2" long, triangle footprint 1.2" x 1.2" x 1.2". Red wire POS(+), Black wire NEG(-).