- Turn the meter off.
- Remove the battery door.
- Remove the batteries.
- Open the child-resistant battery door by inserting a narrow object, such as a pen, into the slot. Push the tab in the direction of the arrow and lift the battery door up.
- Examine the battery compartment. Each battery should be held in place by the black tab on the side of the battery compartment.
- Confirm that the black tabs on the side are not bent down.
- If a bent black tab is preventing the battery from making contact, use tweezers or a small screwdriver to gently bend the tab(s) back into position.
- Each battery should be held in place by the battery ejector button with an image of a hand in the center of the battery compartment, and an additional black tab on the side of the battery compartment.
- Reinstall the batteries. The batteries must be placed in the battery compartment, under the black tabs and battery ejector button, with the “+” side facing up (visible).
- Press each battery down flat inside the battery compartment, and snap the door closed.
- Attempt to turn on the meter by pressing and releasing the power/OK button.
