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  2. iPad (1st generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_(1st_generation)

    The lower portion of the iPad, showing the charging port and audio output grilles The Apple A4 chip, used in the first-generation iPad and the iPhone 4. The first-generation iPad features an Apple A4 SoC, [3] which comprises a 1 GHz processor, 256 MB of RAM and a PowerVR SGX535 GPU.

  3. iPad Mini - Wikipedia

    en.wikipedia.org/wiki/IPad_Mini

    The iPad Mini (branded and marketed as iPad mini) is a line of small tablet computers developed and marketed by Apple Inc. It is a sub-series of the iPad line of tablets, with screen sizes of 7.9 inches and 8.3 inches. The first-generation iPad Mini was announced on October 23, 2012, and was released on November 2, 2012, in nearly all of Apple ...

  4. iPad - Wikipedia

    en.wikipedia.org/wiki/IPad

    iPad Front face of the last generation's flagship model, the iPad Pro (5th generation) Developer Apple Manufacturer Foxconn (on contract) Pegatron Type Tablet computer Release date April 3, 2010 ; 14 years ago (April 3, 2010) (1st generation) Units sold 677.7 million (as of 2022) Operating system iOS (2010–2019) iPadOS (2019–present) Connectivity WiFi, cellular, 30-pin dock connector ...

  5. iPad Pro (1st generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Pro_(1st_generation)

    The first generation of iPad Pro is a line of iPad, a tablet computer developed and marketed by Apple. The iPad Pro was released in 2015 alongside the Apple Pencil, and was the first iPad to use the Pencil as an input device. The iPad Pro was first sold in November 2015 at a screen size of 12.9 inches, larger than all previous iPad models.

  6. iPad Mini (1st generation) - Wikipedia

    en.wikipedia.org/wiki/IPad_Mini_(1st_generation)

    The iPad Mini (stylized as iPad mini), known retrospectively as the iPad Mini 1, is the first generation of the mini tablet computer developed and marketed by Apple Inc. It was announced on October 23, 2012, as the fourth major product in the iPad line and the first of the iPad Mini line. It features a reduced screen size of 7.9 inches (20 cm ...

  7. 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]

  8. Batterygate - Wikipedia

    en.wikipedia.org/wiki/Batterygate

    The controversy first emerged in late-2016, when it was reported that since a recent iOS update, some iPhone handsets had begun to experience unexpected shutdowns when their battery capacity reached 30%, caused by drops in the battery's terminal voltage below a threshold of around three volts required for operation of the device. [4]

  9. Peukert's law - Wikipedia

    en.wikipedia.org/wiki/Peukert's_law

    For example, consider a battery with a capacity of 200 Ah at the C 20 rate (C 20 means the 20-hour rate – i.e. the rate that will fully discharge the battery in 20 hours – which in this case is 10 A). If this battery is discharged at 10 A, it will last 20 hours, giving the rated capacity of 200 Ah.