18650 battery power board
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Hi, to power a sensor or actuator with a 18650 li-ion battery I have designed this pcb based on a tp4056 module and MT3608 booster.
Schematic:
Main features:
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Load sharing circuit to safely power the load while charging the battery
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Boost converter MT3608 (optional) to increase the output voltage. To reduce the size of the board the right part delimited by the vertical white line can be cut out
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Charging status signaling led (optional)
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Voltage dividers (optional) to measure Vin - V batt - V boost - V standby. Output available through J4
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Battery reverse polarity protection through mosfet Q4, excludable through jumper JP3
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Battery voltage measure point can be selected through jumper JP2
This board can be used with this one
I have ordered it (JLCPCB) but yet tested. After that if someone is interested I can share it through openhardware.
Any suggestion / improvement / comment is well appreciated.
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