Why there was no battery?
2051746
It takes one AA battery. You can buy them just about anywhere. What's the problem?
2051747
That's just a Remington choice. But it should list that in the product description page on Amazon.
243554
There is no battery. It must be plugged into an 110 volt AC source. Think long extension cord
1704630
The battery is a backup in case of power interruption. From a practical viewpoint you need a low voltage power supply.
2181534
Hi Beth, This device has no battery. You need to connect it to a power source. -Anthony
1524165
This model does not have a battery in it. It gets its power from the main alarm system board. If your alarm system is working everywhere else except this sensor then it would appear that the sensor is not working any more. Make sure the rest of your alarm system is working properly before replacing the sensor. It might just be a loose wire in the sensor circuit.
464638
Ours had a battery. If the description does not specify "battery not included" you should check with the seller or it could be fraud. They all should have batteries included.
645794
Most likely, battery is bad & cannot be charged. If it cannot be returned, then one of the cover can be popped off & battery can be replaced with parts from eBay & little bit of soldering...
394514
Maybe it is defective--a dead battery inside (which is not consumer-replaceable.)
2090539
There are no batteries. I think there is some type of spring device in the hinges.
1382555
Well the seller never included any batteries before shipping. And did not know that there no battery before traveling with it. To outside US. It was a big diappointment?
27891
It is battery low. Simply replace the batteries with new and it will be fixed.
1008483
There is no battery in this device. It operates only when it is plugged in.
1093410
make sure you are pressing the metal on both hands. I thought our batteries were dead, too. but they were not. My next thought was to take the battery out and check the size, but that wasn't necessary.
63731
Unscrew the battery case, the part with the button. There's probably a tag or plastic between the batteries so it didn't get turned on by accident during shipping
308181
As far as I know, there's no battery. It plugs directly into the electric outlet like a night light.
643327
no battery required. i did not know it took a battery but now i see where it goes.
1813273
From what I have experienced, there is not "battery" on this product. So it has to be plugged to a power source.