extend the battery to avoid to turn on the flashlight by accident, or contaminate the tube once leak. So some flashlights need to lock or remove the battery to conserve. Like IMALENT SA04 uses 4 *AA batteries, this is easy to buy this size if can not find the original ones and with the lock function to keep flashlight clear and long runtime for both of battery and flashlight.
4.5 years or so
An expandable battery is if you would like to switch out the existing battery with a longer-lasting one. It will extend battery life.
No.
Whether you have just started using your iPod or are looking to make the battery last longer than normal, consider the following tips: Charge the battery only when it runs out. Charging it too much can actually result in a shorter battery life. Keep your iPod at room temperature. Leaving your iPod out in the cold can damage it. Turn off your iPod when unattended, as leaving it on can quickly drain the battery.
Waiting for the battery to drain completely to extend battery life.
Turn down the brightness settings
No, it is just said to extend their life if not immediately used.
i do believe you can
According to manufacturers, you should never remove the battery when the computer is plugged in. Removing the battery does not extend battery life because all batteries have "shelf" life and are no good after a certain time. Today's batteries actually will last longer if you keep it in the laptop.
When using a laptop leaving it plugged in when the battery is fully charged does do some slight damage to the battery life. However this is minium but if you do thiscosistantly you will notice your battery does not last as long. Good question
It depends on how new the battery is (in other words, how long it has been sitting on the shelf), but in most cases it will.
The battery life can range from 5-10 hours, depending on the age and size of battery. Remembering to turn the unit off after each use can extend this period.