Before I get told off, I did a search and found some interesting information on this question but I was wondering if anybody had any specific answers relevant to this watch.
I have a Citizen Eco Drive BL5250-02L with an E812 quartz movement, and in order to operate the chronograph function you must pull the crown out to the 1st position, rotate it to change the 6 o'clock subdial to 'CHR' mode, and then push the crown back in. At which point the second hand speeds round to rest at the 12 o'clock position and becomes the chronograph second hand. At this point if you push the top right hand pusher it activates the chronograph.
I'm happy that having a chronograph running all the time will have more demand on the battery. My question is, if I leave it in 'CHR' mode without operating the chrono will this have an effect on the battery either way? Will it save battery as the the second hand is not moving, drain it because it 'stands ready to be used' or something, or will it have no effect at all?
I would do this because it would enable quicker operation of the chrono and also because sometimes I find the ticking second hand distracting when trying to read the exact time. I know it's a light powered watch and it would be replenishing it's lost charge all the time anyway but i'm very curious.