The discussion centers on the discrepancies between the rated capacity of the Dell Power Companion external battery (12,000 mAh) and its actual performance (approximately 43 Wh). Users clarify that the battery's output voltage (14.8V) and the laptop's operating voltage (11.1V) contribute to the confusion. The effective capacity is calculated based on the output current (2.3A) and voltage, leading to a realization that the advertised mAh rating may not reflect the actual usable energy. Misleading advertising practices regarding battery specifications are also highlighted.
PREREQUISITESThis discussion is beneficial for electronics enthusiasts, battery engineers, and consumers evaluating external battery options for laptops, particularly those using Dell products.
Tom.G said:p.s. I have no idea where the 14.8V comes from on the battery sticker ( as shown in post #1)