![]() As the voltage from the power bank is increased to the 20V current that the computer needs, heat is generated and some power will be lost. Most laptops charge at a current around 20V, which is significantly higher than the nominal voltage of the power bank (3.7V). ![]() Some of the most common ones are cable length, high charging voltages/currents, heat and the battery health of the computer. There are many things that can impact this. ![]() "Conversion efficiencyā€¯, is basically a comparison of how much power reaches the device being charged compared to how much power is transferred. ![]() ![]() Here's why " conversion efficiency" matters. Power will be lost while it is transferred from the power bank to your computer.
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