Dudas sobre seguidor de linea

[Surbyte]

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3 hilos del mismo tema.
Mas otro en el foro en inglés.
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Rechargeable lipo battery 7.4v 1800mAh

I have a question. I have a 7.4v 1800 mAh lipo battery and I would like to know what I can charge it with. I took it out of a device that had a rechargeable battery, the battery has two positive and two negative cables. I want to know if I can charge it with a common 5v charger or build an electronic circuit to charge it

https://forum.arduino.cc/t/duda-sobre-el-cargador-de-una-bateria/1052041
https://forum.arduino.cc/t/alimentar-un-seguidor-de-linea/1052593