4KR1100-OPTO-JST : 4.8v Battery for Optoelectronics frequency counters/analyzers.

4.8 volt 1100mAh rechargeable Ni-Cd Battery pack for Optoelectronics frequency analyzers and counters. Has white JST connector. See picture to verify that the connector matches the one on your battery (OPTO-ELECTRONICS packs were made a few different conenctors, based on the particular FA model).

Battery pack dimensions: 2" tall, 2.5" across, 0.6" thick.

Assembled in USA by Batteries America.