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Topic: lipo-rider, batteries and solar panels (Read 2201 times) previous topic - next topic

madepablo

Hi there,

I have a lipo-rider, a couple of solar panels, and a 3.7V 2000mAh lipo battery.
Those are the devices:
lipo-rider: http://garden.seeedstudio.com/index.php?title=Lipo_Rider_V1.2
solar panels: http://www.seeedstudio.com/depot/1w-solar-panel-75x100-p-633.html?cPath=155&zenid=3e224ebdd9752bbcf968633adf07e925
lipo-battery:  http://www.seeedstudio.com/depot/lithium-ion-polymer-batteries-2a-p-603.html?cPath=178_183&zenid=3e224ebdd9752bbcf968633adf07e925

The problem is that the battery charge slowly because the solar panel provide a maximum of 170 mA... so i have on mind to connect 2 of those solar panels in parallel to have 340 mA. The lipo-ride is supposed to control this amperage without problems.

My question is if i could simply connect positive to positive and negative to negative of solar panels to the lipo-rider, or if i need also to wire a diode to prevent problems. It that case, what kind of diode?

Thanks!

Magician

Just connect solar panel in parallel, you don't need any diodes or other components. 

madepablo

Thanks Magician!

then, i will try to see if i could charge the battery faster (with more mA) to have my arduino and the sensors connected to it completely outdoor for a long time.

Thanks,

madepablo

One more question about it.

What is better (less power losses by regulator or other things). 1) to connect the Li-po rider to the USB in Arduino, or 2) to connect to Vin,GND pins?

Thanks!

Magician

Vin power line goes to voltage regulator (vr), this is why 6 - 20 V limits, 1 V drop across vr chip.
USB bypass vr, so +5 V is just o'k.

madepablo

Thanks, perfect!

Thank you for resolve my question.

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