I recently had the need to get an item that you wouldn’t have thought would be too difficult to find –a Cat Flap. OK,so it was a particular Cat Flap that uses an RFID tag rather than a magnet to prevent stray or unwanted cats from entering our house,but it was listed [...]

Can Rechargeable Batteries be used in Smoke AlarmsCan Rechargeable Batteries be used in Smoke Alarms
Smoke Alarm Batteries
Yes,but perhaps the question should be:
“Should I use rechargeable batteries in a Smoke Alarm”
One of the problems with conventional rechargeable batteries is the self discharge –at between 1% and 2% per day this is higher than the drain from the smoke alarm itself.
So a conventional rechargeable [...]