Sharing 6v 500 mAh solar panel with cn3791

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1

Hi,

I am trying to build 6v 500 mA solar panel powered device with backup 2x18650 3.7v 2500 mAh parallel battery power. I attached solar panel output to two MPPT CN3791 6V. Each CN3791 is attached one Li-ion battery and one load output. Outputs are connected parallel to load my device. The question is can I charge and discharge simultaneously my batteries? Second question is am I on right way? Please find circuit attached to message.

circuit
circuit819×857 49.8 KB

Thank you for your help.

Orkun Gedik

2

I doubt it will work to connect two MPPT chargers to one panel. Those solar panels are cheap, so just buy another.

Otherwise, just connect the batteries in parallel and use one charger. You can connect the solar panels in parallel too, and double the charge rate.

Note: "mAh" is a measure of battery capacity. "mA" is a measure of current.

1 Like
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Thank you for your great explanation :+1:t2:

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