How to charge 18650 battery without a charger the basic theory on how to charge any lithium ion cells at home using inteligent chargers.
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The 18650 batteries or li-ion or the full name lithium ion cells are very popular and can be found in lots of applications from e-bike,mobility scotters,tools, power banks and even the tesla power wall uses the same technology just scaled up in multiple row of series and parallel battery connections.In this video, i will show you what you need to charge one individual cell and from here on you can multiply your battery pack and develop your own battery bank
During discharge, lithium ions (Li+
) carry the current within the battery from the negative to the positive electrode, through the non-aqueous electrolyte and separator diaphragm.
During charging, an external electrical power source (the charging circuit) applies an over-voltage (a higher voltage than the battery produces, of the same polarity), forcing a charging current to flow within the battery from the positive to the negative electrode, i.e. in the reverse direction of a discharge current under normal conditions. The lithium ions then migrate from the positive to the negative electrode, where they become embedded in the porous electrode material in a process known as intercalation.
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