Most motors will work at just about any voltage you give them, but if you give a motor the voltage from a single lithium-ion cell, it will spin very, very slowly. Single LEDs can run at single-cell lithium-ion voltages, but if you plan on running a more sophisticated lighting setup, you are going to need a higher voltage. This is not a high enough voltage to power most things.įor example, most inverters need at least 11 volts to turn on, and 12 or 13 to operate efficiently. A single cell or parallel group of cells has a maximum voltage of just 4.2 volts. The voltage of a single lithium-ion battery is quite low, so using multiple cells in certain configurations is needed to build a battery pack. There is, however, a major shortcoming when it comes to lithium-ion battery cells. Lithium-ion batteries are extremely power dense and over the last 10 years, the cost of a given amount of lithium-ion energy has come down about 10-fold. We will also explain if it's even possible and if the battery cells can be charged while in series. In this article, we will explain why you would want to wire lithium-ion batteries in series. Putting lithium batteries in series increases the overall voltage, which increases overall power. Overall capacity is added because power is measured in watts- and watts is volts multiplied by amp hours. When battery cells are wired in series, their voltages are added but their amp hours are not. At the ends of the chain, you will find your main negative and positive connections. Either way, once you wire a set of lithium-ion batteries in series, it will form an open-ended chain. Some configurations will require just 3 cells in series, other configurations require 20 or more. It’s as simple as connecting the positive connection of the first cell to the negative connection of the next cell. Wiring lithium-ion batteries in series is simple. They are all around us, in our phones, tablets, laptops, electronic cigarettes, cars, and just about any other portable device you can think of. Lithium-ion batteries have become part of everyday life. If you want to do anything practical with lithium-ion batteries, then you are going to need to know how to wire lithium batteries in series.
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