Why don t some things work with rechargeable batteries?

The device may have a low voltage cut out of 4.9 volts. So when each battery is discharged to 1.225 volts the device will cease to operate. A similar rechargeable cell has a voltage of 1.2 volts so the same combination of cells will only yield 4.8 volts which is already lower than the low voltage cut out.

Why do rechargeable batteries not last as long?

As the voltage drops below a certain point the devices stop working. As Secondary batteries have a lower voltage to start with even slight voltage drops will cause the devices to stop functioning properly, even if they have not expended their full capacity.

Do rechargeable batteries work in everything?

You can use rechargeable batteries in absolutely any device where you would normally use an alkaline battery, unless stated otherwise by the device manufacturer. There are no interference implications using rechargeable battery brands that are different to the device brand.

Is it OK to use rechargeable batteries in smoke detectors?

Most alarm manufacturers recommend against using rechargeable batteries to power a smoke alarm. No matter what kind of smoke alarms you have, according to the US Fire Administration, you should test the battery monthly and replace the entire device every 10 years.

Are rechargeable batteries more environmentally friendly?

Rechargeable batteries can be better for the environment than disposables, but only if they are used to their full potential. When you consider the greenhouse gases generated from manufacturing, rechargeables look better than disposables.

Is it OK to leave rechargeable batteries in the charger?

Don’t Leave Battery on Charger: Unless your tool instructions specifically say to store the battery on the charger, be sure to remove it after charging is complete. Overcharging can damage a battery and shorten its life, and not all chargers shut off automatically.