Hello i want to use an lipo 5v battery for my project.
I know that i can connect the battery through the 5v pin. But can i also charge the lipo with the same 5V pin?
NO! The charging voltage will DESTROY your Arduino!
Only a WELL REGULATED +5 should be applied to the 5V pin! Neither the battery, nor the charger should be applied to the +5V pin!
Redesign your power circuit to provide between 7V and 9V on the barrel jack, or get a HARD +5V power supply on the +5V pin.
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What specifically are you on about?
He wants to hook a battery & charger directly to the 5V pin. So the input voltage to the CPU will be (potentially) the max open circuit voltage of the charger, and destructive to his Arduino.
OR he wants to use the Arduino +5V as a source to charge the battery. Again, "no", as the Arduino +5V has very little "excess" current capability, no more than an LED's worth.
Thanks, but let the OP answer. I don't know what his intention is, that's why I asked him.
OK?
LiPo batteries are not 5V. They are approximately 4.2V when fully charged and around 2.8~3.0V when discharged. If LiPo batteries are connected in series, they can be double or triple those voltages.
Maybe you mean a 5V power bank, the kind used for charging smartphones? These contain LiPo batteries but also have a small module to boost the voltage to 5V.
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