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Battery charger - Schematic
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Below you have the scheamtic for version V1.0. Remember this version works ok but have in mind: The coil is small so it will have a maximum current output of 600mA. To switch from 5V to 12V or viceversa, you first must disconnect the battery from the input, otherwise the boost converter IC will fail. So, first select output voltage adn then connect the battery. You have the values of each resistor, capacitor, inductor on the schematic. Use the same values in order to get the same output. Remember that Rprog will set the charging current for the battery.

homemade BMS charging schematic

homemade BMS charging schematic


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