To test this feature, visit your live site.

Charger for 3.7 V batteries

When the 3.7 volt battery is plugged into the charger and both green and red lights are solid on. What does this mean? Will one light turn off or what should I look for to know they are charging and there is not a problem?

6 comments

6 Comments

matthew.rector

Mar 20

Originally the batteries came reverse polarity for the charger. I connected the battery with the reversed polarity and then noticed it was wrong so I switched the polarity to match the polarity of the charger. Could this original polarity burn up the charger? Or what needs to be done now? Polarity correct now in the picture but not connected due to I have already set the micro moth up to record.

Alex Rogers

Mar 20

Replying to

It's possible that the reverse polarity has damaged the charging circuit. It will take about 10 hours to charge the battery at 100mA. What voltage does AudioMoth report in the Time App when the battery is connected?

matthew.rector

Mar 19

Micro moth… MicroLipo 3.7v/4.2v LiPoly/Liton Battery Charger

Alex Rogers

Mar 19

Hi Matthew, Which charger and AudioMoth hardware are you referring to here? Alex

matthew.rector

Mar 19

Replying to

Micro moth… MicroLipo 3.7v/4.2v LiPoly/Liton Battery Charger

Alex Rogers

Mar 20

Replying to

Hi, Can you post a picture of the charger and the set-up? Was the charger bought from GroupGets?

The actual charger is made by Adafruit.

https://www.adafruit.com/product/1904

From their schematic, it doesn't look possible for both LED to be on at the same time. Is the polarity of the battery correct? There is no standard for the polarity of small LiPo batteries so sometimes you need to switch over the crimp connectors in the plastic holder at the end of the cable.

Alex