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Published 20 hours ago • verified publisher icon Xinyuan-LilyGO

SY6970 library does not change the actual charging rate.

Open Grex44 opened this issue 10 months ago • 6 comments

Hi,

I'm experiencing some issue with the charging speed rate on the SY6970. I included the library from lilygo's repository. Even after setting up PMU.setChargerConstantCurr(); to PMU.setChargerConstantCurr(3200); The tested charging rate was still at 400mA.

I've even increase the input current limit with setInputCurrentLimit() to setInputCurrentLimit(2000);

There was no change in the actual charging performance. Appreciate your assistance in it.

Grex44 avatar Apr 02 '24 05:04 Grex44

is the charging rate fixed based on this resistor? image

Check the manual for more info: image

rhcp4life avatar Apr 02 '24 18:04 rhcp4life

Ok thanks. Is there anyone possible to point out which resistor is R24 on the board itself since there isn't any silkscreen indicating R24

image

Grex44 avatar Apr 03 '24 01:04 Grex44

Do you want to set the charging current to 3A? I do not recommend adjusting the charging current. It is reasonable to set the maximum to 500mA according to the circuit conditions.

lewisxhe avatar Apr 03 '24 02:04 lewisxhe

Yes or anything more than 500mA. I would like to increase the charging speed time of the battery that is currently being used. Maybe increase it to 1A or 2A at most.

Grex44 avatar Apr 03 '24 02:04 Grex44

Please note that replacing this resistor carries the risk of damage, which you should be aware of The picture below shows the location of the resistor image

lewisxhe avatar Apr 03 '24 03:04 lewisxhe

Thanks for the assistance. I will follow up again if there is any results upon the swap of resistor.

Grex44 avatar Apr 05 '24 04:04 Grex44