I could do with some advice, about using lipo batteries for a project.

[Matt Joyce]

Hello,

I have been using an AudioMoth, for field recording, and the duration is about 30 days.

https://www.openacousticdevices.info/audiomoth

I have so far been using 3 x D Cell batteries, and they are fine, but eventually they run out.

I though I would use a lipo, and then add a solar cell to top up.

So I bought a 2200mah cell, and this small charging circuit from AliExpress.

https://www.aliexpress.com/item/1005001728396318.html

This seems like it would be right for the job.

3.7v battery, and 6v out (actually this is a bit high for AudioMoth, which can use ~4v but is rated for 6v)

To test, I connected a bench psu, to the Vin of the circuit, and could see the load increase, as the battery was charged.

Once the load dropped to 0, I connected the AudioMoth to vOut, and disconnected the PSU, but the AudioMoth did not power on.

I tried a different lipo, and the audiomoth turned on, and I can measure the vin on the AudioMoth at 6v.

So does this suggest the new battery is duff?

Regards

[Sophie Parker]

It’s hard to say with that description. There’s probably some other issue. Try bringing it along to the space.

You could also put a USB A plug on it and run it from any USB power bank (or solar USB supply).

Sophie Parker

Luminesce

sop...@luminesce.lighting

luminesce.lighting

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