Troubleshooting power for SunAirPlus3 board

estairplusplus
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Troubleshooting power for SunAirPlus3 board Oct 20, 2022 16:48:27 GMT -8

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Post by estairplusplus on Oct 20, 2022 16:48:27 GMT -8

Battery is charged, >3.8v. It was initially connected without checking polarity of wiring (oops! could use diode protection on board), and the board got hot instantly upon plugging it in and switching to on. Now that polarity is verified and checking it out, the LED for solar lites OK, but the battery does not. When all assembled and switched to on, no LED on this board or those attached with batt - when using solar it will lite the shown LED but nothing else.

I assume a component in this board was damaged by reversed polarity from the batt. Happy to troubleshoot further with some guidance.

SDL Global Moderator Posts: 5,655 Raspberry Pi: Yes Other Device: PC, arduino, beagleBone	Troubleshooting power for SunAirPlus3 board Oct 25, 2022 15:22:33 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SDL on Oct 25, 2022 15:22:33 GMT -8 Look in the manual. We talk long and hard about batteries not purchased from Adafruit and Sparkfun. I think you have blown the charge controller on the board. SunAirPlus4 will add a polarity diode. BP

estairplusplus New Member Posts: 2	Troubleshooting power for SunAirPlus3 board Nov 5, 2022 15:25:55 GMT -8 SDL likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by estairplusplus on Nov 5, 2022 15:25:55 GMT -8 Yep, try telling that to a 10 year old I see the SunAirPlus3 is on the store now, ordering.
	Last Edit: Nov 5, 2022 15:29:11 GMT -8 by estairplusplus

Post by estairplusplus on Oct 20, 2022 16:48:27 GMT -8

Post by SDL on Oct 25, 2022 15:22:33 GMT -8

Post by estairplusplus on Nov 5, 2022 15:25:55 GMT -8

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