Why my Smoke Alarm "Backup" batteries are dying? - house alarm batteries
If the alarm is connected to the house, should not the backup battery is still fresh? Leaving the only 6 months that has been made the new battery and the alarm never has.
Sunday, January 3, 2010
House Alarm Batteries Why My Smoke Alarm "Backup" Batteries Are Dying?
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1 comments:
The expiry date is printed on the battery only valid if the battery is not installed on everything. Once it put into a device, even if you do not use the battery will expire within a few months. You need to change batteries in smoke detectors twice a year.
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