How do I change the battery in my OvuLook™ Tester?
With normal use, your battery should last at least a year. If you do need a new battery, simply open the case and remove the round tracking disk. Then, push the old battery out using the tip of a pen. Replace it with the same type of battery. To order new disks, brush, and battery, please order here, or email us at info@ovulook.com, or call toll free 1-866-OVULATION (1-866-688-5284) for more information.