The main issues with that battery are availability and cost effectiveness, compared to LR44 / SR44 types. It is electrically compatible with Vector 3, but the low-battery alert set point has not been characterized…
T-smits response in another thread regarding this (quoted below). ...Use at your own caution?
"With all due respect, this is not a good idea. As RobCuadro notes, the spring contacts are breakable if they…
Try a little mineral oil on the batteries. It provides enough lubrications to stop the dropouts due to vibration. It fixed my problem with dropouts completely. I us LR44s but going to try CR1/3Ns due to others here saying that last so much longer. LR44s last about 3 months. I ride 3 times a week about 3 hrs at a time.
CR1 batteries are now recommended by Garmin as better option compared to LR44 for the new Rally model (which is identical to Vector 3)
They've also updated the Vector 3 recommendation. support.garmin.com/.../