Hello everyone!
In my project I want to use a battery like this http://uk.farnell.com/bak/18650ca-2s-3j/battery-lithium-ion-7-4v-2250mah/dp/2401854 2 cells Li Ion battery pack. And i want it to be charged from USB port. Is it even possible to do that? Because USB output is 5V, and when charging a battery like this, do I need a charger circuit that can supply 4.2V and it charges each cell independently? Or both cells of this battery has to be charged at the same time, so it means that I need an input to the charging circuit bigger than the batteries voltage and I cant charge it from USB port?
Thank you! hope you understood my question
In my project I want to use a battery like this http://uk.farnell.com/bak/18650ca-2s-3j/battery-lithium-ion-7-4v-2250mah/dp/2401854 2 cells Li Ion battery pack. And i want it to be charged from USB port. Is it even possible to do that? Because USB output is 5V, and when charging a battery like this, do I need a charger circuit that can supply 4.2V and it charges each cell independently? Or both cells of this battery has to be charged at the same time, so it means that I need an input to the charging circuit bigger than the batteries voltage and I cant charge it from USB port?
Thank you! hope you understood my question