Battery for Graphtec B-517 GL220 GL200A GL450 GL500A GL800E GL820E Data Logger $37.29 $109.99 Battery for Graphtec B-517 GL220 Data Compatible with the following devices GL220 GL200A GL220E GL450 GL500A GL800E GL820E GL900E-8 GL900E-fourth Data Logger SEIKO DPU3445 DPU-3445 Compatible with Battery Part Numbers B-517, BP-3007-A1-E Add to Cart