How Long Do Batteries Last In A Flashlight. Jul 20 2012. DO replace the batteries in your flashlight or lantern every few months if it isnt used for extended periods of time.

Jul 20 2012. This failure also triggers the Battery Light which is a bit of a misnomer as the Battery Light indicates that your charging system is not charging the battery not that the battery is suddenly bad. This insures that it has fresh working batteries and prevents battery leakage.
The ubiquitous CR2032 battery is a coin-shaped three-volt lithium-ion battery.
They last a long time. I use that light a lot. In my view the primary reason for storing alkaline batteries outside of the light is the batteries propensity for leaking their delicious internal juices and damaging the light. What the key fob battery low warning light means.
