First of all you did not provide a model number for the some alarm, but I looked at some models that I found online it looks like some have a front door that you can open up with out taken it off the wall eaither by swing it upen or pushing the door open.
Remove the old battery. Then reverse the procedure; once you have determined the method of removing the cover. Some twist off, some have to be 'squeezed' to unhinge the snap tab.
You got to take out the battery and put a new one in.
how do you unplug the quick connect wiring and open the door to change the battery on a model 1275
Apart from smoke alarms, Kidde make many different safety appliances. They also make fire extinguishers, carbon monoxide alarms, escape ladders, key safes, locks and many more.
new battery
In the alarm panel box or an auxiliary box nearby.
Change all of them at the same time, as otherwise the weaker ones will make the newer ones fail more quickly. Note that some smoke alarms no longer have replaceable batteries, since you need to dispose of a smoke alarm after 8-10 years anyway.
Smoke alarm batteries are easy to replace, once you find where they go. The design varies from brand to brand. Usually, the battery is located on the side of the alarm, either in a "drawer" or a swinging compartment. There may be a small plastic latch holding it closed. Occasionally, it is necessary to remove the alarm from the wall or ceiling to find the battery compartment. This can be done by rotating the entire alarm counter-clockwise until it releases. The battery compartment is designed not to close if the battery is inserted incorrectly. Many smoke alarms have an option to permanently screw the battery compartment closed. This is typically done in rental units to prevent tenants from removing the battery during a false alarm. In this case, the landlord is required by law to change the battery. If you are the landlord, consult the alarm documentation (which can be found online) for instructions on how to remove the locking screw.
There are several places one can buy Kidde smoke alarms. Online retailers include Amazon and the official Kidde website. Retailers that offer both online and in store purchase options include Home Depot and Walmart.
Most smoke detectors have a single 9 volt battery in them. It is the square type that snaps onto the circuit. You should replace them twice a year, one recommended timing is to swap them out when you change your clocks.
The most likely reason your smoke alarm starts beeping when you are on the treadmill is it needs a new battery. It is a coincidence that you are on the treadmill when it is alerting you.
It probably beeps during the day too, but there is too much ambient noise in an active household to notice it. Change the battery and be done with it.
You should replace your batteries every 6 months. Smoke detectors save lives!
If the smoke alarm lasts for ten years before you need to replace it, and the batteries should be replaced at least once per year, you would need to change the batteries of a smoke alarm ten times before you replace the entire thing.