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  2. 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.

  3. Troubleshooting - Wikipedia

    en.wikipedia.org/wiki/Troubleshooting

    Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again. Troubleshooting is needed to identify the symptoms.

  4. Nikon Speedlight - Wikipedia

    en.wikipedia.org/wiki/Nikon_Speedlight

    Nikon Speedlight SB-5000 is the first model featuring 2.4 GHz radio communication for slave and master mode. It weighs 420 g, slightly heavier than the SB-9XX units. The menu system is similar to SB-700 and 9XX series. It uses a dot matrix display with led illumination unlike SB-700 and 9XX series' EL illuminator. The modeling button makes a ...