Flashlight with battery life indicator module

An apparatus for a flashlight comprising:

• a tubular module having first and second ends, each of said ends having threads for coupling to a flashlight head assembly and a battery holder assembly. respectively:
• means for providing an electric connection between said battery holder assembly and said flashlight head assembly;
• a circuit board mounted inside said tubular module;
• at least two light emitting diodes mounted on said circuit board, said tubular module defining at east two windows proximate said light emitting diodes for allowing light to escape;
• and
• circuit means for measuring a battery level and activating said light emitting diodes responsive to said battery level.

A flashlight comprising:

• a head module having an opening at a first end for emitting light;
• a reflector mounted in said head module;
• a light bulb mounted between said reflector and said head module opening;
• a battery life indicator module having a first end coupled to a second end of said head module;
• a battery casing for holding at least one battery having a first end coupled to a second end of said battery life indicator module;
• an indicator mounted in said battery life indicator module;
• and
• circuit means for measuring a parameter related to a charge of said battery and activating said indicator when said battery level passes a predetermined value.

A module for incorporation into a flashlight having at least one battery comprising:

• an indicator mounted in said module and visible from the exterior of said module;
• circuit means for measuring a battery level and activating said indicator when said battery level passes a predetermined value;
• and
• means, coupled to an ON/OFF switch of said flashlight, for activating said circuit means.