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by kogepathic
3151 days ago
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> Just like if I have a splitter plugged into the wall and two USB cables attached I can charge those two devices as fast as if there was one item plugged in. So why wouldn't this be faster? Because with your method you are doubling the power. Imagine you have one charger with a fixed output of 10W (2A @ 5V). Now you have a USB splitter cable which allows you to plug two devices into the same charger. What happens? Most likely both devices will charge at 1A (5W) instead of a single device charging at 2A (10W). The power output of the charger doesn't magically increase to 4A (20W) because you plugged in a USB splitter cable. Increasing the number of battery cells is equivalent to adding more splitter cables to the charger. The input power doesn't change, but the power to each cell (device) is decreased proportionally to the number of cells (devices) drawing power. |
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