To release the battery from the battery holder you will need to:

1. Place your tweezers in the latch and pull in the direction of the green arrow. If you do not have a pair a tweezer, use a tack and place the tack between the latch and battery space and pull out

2. Pull the latch all the way up to release the battery following the direction of the pink arrow

Be careful not to accidentally knock off one of the ground pins