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  2. Charge cycle - Wikipedia

    en.wikipedia.org/wiki/Charge_cycle

    A charge cycle is the process of charging a rechargeable battery and discharging it as required into a load. The term is typically used to specify a battery's expected life, as the number of charge cycles affects life more than the mere passage of time.

  3. Flashlight - Wikipedia

    en.wikipedia.org/wiki/Flashlight

    An LED flashlight has a longer battery life than an incandescent flashlight with comparable output. [10] LEDs are also less fragile than glass lamps. LED lamps have different spectra of light compared to incandescent sources, and are made in several ranges of color temperature and color rendering index. Since the LED has a long life compared to ...

  4. C battery - Wikipedia

    en.wikipedia.org/wiki/C_battery

    The C battery (C size battery or R14 battery) is a standard size of dry cell battery typically used in medium-drain applications such as toys, flashlights, and musical instruments. As of 2007, C batteries accounted for 4% of alkaline primary battery sales in the United States.

  5. Solar-powered flashlight - Wikipedia

    en.wikipedia.org/wiki/Solar-powered_flashlight

    A typical solar flashlight can give useful levels of illumination on objects up to 50 metres away, and beam may be visible for much longer distances. The solar cells used for battery charging have an indefinite life expectancy. A solar powered flashlight may give several hours of light after being charged during the day. [3]

  6. Mechanically powered flashlight - Wikipedia

    en.wikipedia.org/.../Mechanically_powered_flashlight

    The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

  7. Product lifetime - Wikipedia

    en.wikipedia.org/wiki/Product_lifetime

    It is also different from product economic life which refers to the point where maintaining a product is more expensive than replacing it; [2] from product technical life which refers to the maximum period during which a product has the physical capacity to function; [3] and from the functional life which is the time a product should last ...

  8. Get a Free Battery With This Craftsman Drill-Driver Kit ... - AOL

    www.aol.com/lifestyle/free-battery-craftsman...

    In addition to the discount, you get a free battery compatible with other Craftsman tools. Get a Free Battery With This Craftsman Drill-Driver Kit, Which is Already 33% Off at Lowe’s Skip to ...

  9. Depth of discharge - Wikipedia

    en.wikipedia.org/wiki/Depth_of_discharge

    This corresponds to the DoD in the sense of definition (1). For almost all known rechargeable battery technologies, such as lead-acid batteries of all kinds like AGM, there is a correlation between the depth of discharge and the cycle life of the battery. [10] For LiFePO

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