How to replace the AAA battery in my TWIST – Time Timer Support

You will occasionally need to replace the AAA battery in your Time Timer® TWIST.

To replace the battery, please follow the directions below:

Simply lift the battery cover on the back of your Time Timer® TWIST to open.
Insert the AAA battery negative side (the flat end) first so that it's touching the spring.
Replace the cover of the battery compartment.

Non-rechargeable batteries are not to be recharged.
Do not force discharge, recharge, disassemble, heat above 100ºC/212ºF or incinerate. Doing so may result in injury due to venting, leakage or explosion resulting in chemical burns.
Ensure the batteries are installed correctly according to polarity (+ and -).
Remove and immediately recycle or dispose of batteries from equipment not used for an extended period of time according to local regulations.