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2. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   If a battery has been completely discharged (e.g. the car lights were left on overnight) and next is given a fast charge for only a few minutes, then during the short charging time it develops only a charge near the interface. The battery voltage may rise to be close to the charger voltage so that the charging current decreases significantly.

3. Backup battery - Wikipedia

   en.wikipedia.org/wiki/Backup_battery

   A valve-regulated lead-acid battery is a battery type that is popular in telecommunications network environments as a reliable backup power source. VRLA batteries are used in the outside plant at locations such as Controlled Environmental Vaults (CEVs), Electronic Equipment Enclosures (EEEs), and huts, and in uncontrolled structures such as ...

4. Qi (standard) - Wikipedia

   en.wikipedia.org/wiki/Qi_(standard)

   The bottom side of an LG WCP-300 Qi charging pad Opened Nokia DT-900 Qi charger. The WPC published the Qi low-power specification in August 2009. [8] The Qi specification can be downloaded freely after registration. [9] Under the Qi specification, "low power" inductive transfers deliver power below 5 W using inductive coupling between two ...

5. Charge controller - Wikipedia

   en.wikipedia.org/wiki/Charge_controller

   A charge controller, charge regulator or battery regulator limits the rate at which electric current is added to or drawn from electric batteries to protect against electrical overload, overcharging, and may protect against overvoltage. [1] [2] This prevents conditions that reduce battery performance or lifespan and may pose a safety risk. It ...

6. Lithium iron phosphate battery - Wikipedia

   en.wikipedia.org/wiki/Lithium_iron_phosphate_battery

   The specific energy of LFP batteries is lower than that of other common lithium-ion battery types such as nickel manganese cobalt (NMC) and nickel cobalt aluminum (NCA). As of 2024, the specific energy of CATL's LFP battery is currently 205 watt-hours per kilogram (Wh/kg) on the cell level. [13] BYD's LFP battery specific energy is 150 Wh/kg ...

7. Battery charger - Wikipedia

   en.wikipedia.org/wiki/Battery_charger

   A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage , amperes, current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.