apc how to replace battery?
['Position the UPS to let it face you.', 'Remove the front bezel of the UPS.', 'Pull the battery connector by the string.', 'Remove the screws holding the battery in place.', 'Pull the battery module out.', 'Get a new rack-mount battery.', 'Slide in the replacement battery and mate the Anderson connectors.', 'Screw the battery module back in place.']