Yes in 32 kHz !! 16384/32= 512 ms !! Here we are !! Thanks for the explanation.

Hi Alex, I use Eneloop Pro rechargeable batteries and Sandisk ultra 32 or 64 Go SD cards. The little noise appears every 516 ms, and is faint and high pitched. And sometimes louder, but rarely. No problem for me because I'm recording crossbills. But of course it's interesting to try to find the reason. Only when the Audiomoth is in a plastic bag.

Hi everybody, I have the same problem, with my 2 audiomoths, only when they are in a plastic bag. However, because I'm just recording birds and the "beep" in upper in frequency, that's not a big problem for me.

No. But I have recorded 4 hours/days during 21 days. And my batteries were still working well ! So, 84 hours. More than 5 days if you record 16 hours/day. So.... 24 hours during 5 or 6 days, it can work. But don't forget I'm recording in 32 kHz. Enough for birds. But not for bats !

Hi, I'm using rechargeable batteries with my Audiomoth. Eneloop 2500 mAh. I'm recording birds (crossbills) near Paris, France. 4 hours each day. 32 kHz. Gain High. I put the Audiomoth during 3 weeks (21 days) in my forest. It works perfectly. All the best, Julien