I am using the RAK19007 with the RTC module and the GPS module. For testing I attached a li-polymer battery to the 19007 and left it charging via USB of the computer(computer usb → usb of 19007). After two days connected the battery inflated meaning it was damaged. On a side note I was using the battery for three weeks now for the project with no issue. The main question is, the RAK19007 has a control charger to avoid charging at a certain voltage? Reading the documents provided it does not specify any warning about overcharging. Thanks.
Hi @zeroerrordev ,
The RAK19007 has charger controller designed for single Li-Ion/Li-Po battery. It will cutoff at 4.2V range automatically. This might be the protection you are looking for. Regarding the inflation/bloating of the battery you have, it is more likely related to the battery itself and not the RAK19007 charging circuit.
PS, if you are using LiPo pouch types, they usually have PCM built-in so they have extra protection against underevoltage, overvoltage, overcurrent, etc.
Thanks, will test with another battery. One last question, can I put a power source in the solar panel connector without battery?
Yes, you can supply the WisBlock through the Solar connector with 5V DC.
I have multiple devices without battery that I supply through this connector with 5V.
Thanks for the help.
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