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Sunvalley Group (Chinese: 泽宝集团 [7]), previously known as Sunvalleytek International Inc., [8] [9] [10] is a Chinese consumer electronics company founded in 2007 and headquartered in Shenzhen.
Charging a 12 V lead–acid car battery A mobile phone plugged in to an AC adapter for charging. 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 RavPower RP-PB41 with advertised capacity of 26,800 mAh that was evaluated in the journal has a theoretical capacity is 19,832 mAh, although the delivered capacity was 15,682 mAh, 78% of theoretical value. Authors attributed the difference to internal resistance in battery and converter losses. [12]