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  2. Battery indicator - Wikipedia

    en.wikipedia.org/wiki/Battery_indicator

    An ESR meter known not to have diode protection will give a reading of internal resistance for a rechargeable or non-rechargeable battery of any size down to the smallest button cells which gives an indication of the state of charge. To use it, measurements on fully charged and fully discharged batteries of the same type can be used to ...

  3. State of charge - Wikipedia

    en.wikipedia.org/wiki/State_of_charge

    In a battery electric vehicle (BEV), the state of charge indicates the remaining energy in the battery pack. [4] It is the equivalent of a fuel gauge.. The state of charge can help to reduce electrical car's owners' anxiety when they are waiting in the line or stay at home since it will reflect the progress of charging and let owners know when it will be ready. [5]

  4. Rechargeable battery - Wikipedia

    en.wikipedia.org/wiki/Rechargeable_battery

    A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.

  5. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    A 10-ampere-hour battery could take 15 hours to reach a fully charged state from a fully discharged condition with a 1-ampere charger as it would require roughly 1.5 times the battery's capacity. Public EV charging stations often provide 6 kW (host power of 208 to 240 V AC off a 40-ampere circuit). 6 kW will recharge an EV roughly six times ...

  6. Trickle charging - Wikipedia

    en.wikipedia.org/wiki/Trickle_charging

    Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.

  7. How to prepare for an emergency: Create a 'go bag,' do ... - AOL

    www.aol.com/lifestyle/prepare-emergency-create...

    Here’s what to know. ... Phone charger; a fully charged phone power bank is also useful in the event of a power outage. ... A battery-powered or hand-crank radio.

  8. Depth of discharge - Wikipedia

    en.wikipedia.org/wiki/Depth_of_discharge

    the fraction of the battery's capacity which is currently removed from the battery with regard to its (fully) charged state. For fully charged batteries, the depth of discharge is connected to the state of charge by the simple formula =. The depth of discharge then is the complement of state of charge: as one increases, the other decreases ...

  9. Rechargeable alkaline battery - Wikipedia

    en.wikipedia.org/wiki/Rechargeable_alkaline_battery

    The rechargeable alkaline battery was, at one time, cheaper than other rechargeable types. [4] Cells can be manufactured in the fully charged state and retain capacity well. Their capacity is about 2/3 that of primary cells. They are of dry-cell construction, completely sealed and not requiring maintenance.