I'm wondering if AudioMoths will accept rechargeable lithium ion batteries and if anyone has tried using them already? I'm curious how long they last compared to NiMH rechargeable or regular lithium ion batteries. Thanks!
I use packs of four 18650 batteries. And work very fine, I can record all the night 1 month without problems. In the test I used a 512 Gb Sd and the audiomoth can record 480 Gb of wav files, and it had remaining energy.
@Alex RogersHello Alex, We use some audiomoth because the others devices are to much expensive to our budget. The biggest trouble we had in the beginning was the battery duration, because of thar we put the 4 Sanyo 18650 battery pack (13600 mhA more or less, 3.7v).
I always configure our audiomths at 256Khz rate, or 250 in the lastest App version. I don´t remember the exact number of hour per night, but at least was eight hours per night without sleep- record cicle.
No I'm talking about rechargeable lithium-ion, not the NiMH. I've used NiMH before, a couple different brands. But I wanted to try rechargeable lithium-ion because they should in theory last longer.
Great, thanks! Just wanted to make sure they were at least compatible before I tried them. I'm going to have them run continuously at a high sample rate just to see how long they end up lasting.
Yes I have been using standard AA NiMH batteries fore my AudioMoth and they worked out fine. You probably want to take care that you pick a proper brand with reliable performance. I have been using the ones from Eneloop/Panasonic.
Ah, I’d forgotten these existed. We’ve never tried them but they should work fine. I can’t find a decent discharge curve plot for them but they claim to maintain close to 1.5V over their capacity. They have some additional voltage regulation inside them which might create some additional noise but worth trying.
Hi Alex, Thanks for the reply! I'm just using 'regular' Audiomoths, and meant rechargeable lithium-ion AA batteries, like putting 3 in to the battery pack (I'm not electronically knowledgeable to figure out attaching external batteries or messing with the board).
Yes, small rechargeable Li-Ion batteries (commonly now LiPo batteries) work really well with AudioMoth. They spend most of their life at a voltage between 4.2 and 3.7V which matches well with AudioMoth’s requirements so you get the full capacity from them. Both the AudioMoth Dev and uMoth boards have JST-PH connectors so you can typically buy a LiPo battery with the correct connector and plug in straight into these boards. There is no standard on the polarity of the connectors and the development board and radio controlled car communities typically use opposite polarities. It’s easy to swap the wires over on the connector though with a small screwdriver to lift up the plastic tab that holds the crimped wire in place. We use these batteries with AudioMoth Dev for short deployments.
I use packs of four 18650 batteries. And work very fine, I can record all the night 1 month without problems. In the test I used a 512 Gb Sd and the audiomoth can record 480 Gb of wav files, and it had remaining energy.
No I'm talking about rechargeable lithium-ion, not the NiMH. I've used NiMH before, a couple different brands. But I wanted to try rechargeable lithium-ion because they should in theory last longer.
Great, thanks! Just wanted to make sure they were at least compatible before I tried them. I'm going to have them run continuously at a high sample rate just to see how long they end up lasting.
Ah, I’d forgotten these existed. We’ve never tried them but they should work fine. I can’t find a decent discharge curve plot for them but they claim to maintain close to 1.5V over their capacity. They have some additional voltage regulation inside them which might create some additional noise but worth trying.
Hi Alex, Thanks for the reply! I'm just using 'regular' Audiomoths, and meant rechargeable lithium-ion AA batteries, like putting 3 in to the battery pack (I'm not electronically knowledgeable to figure out attaching external batteries or messing with the board).
Something like these - https://smile.amazon.com/EBL-Battery-Batteries-Capacity-Rechargeable/dp/B08RZ5NDMM/ref=sr_1_6?dchild=1&keywords=rechargeable+lithium+ion+aa+batteries&qid=1634215073&sr=8-6.
Yes, small rechargeable Li-Ion batteries (commonly now LiPo batteries) work really well with AudioMoth. They spend most of their life at a voltage between 4.2 and 3.7V which matches well with AudioMoth’s requirements so you get the full capacity from them. Both the AudioMoth Dev and uMoth boards have JST-PH connectors so you can typically buy a LiPo battery with the correct connector and plug in straight into these boards. There is no standard on the polarity of the connectors and the development board and radio controlled car communities typically use opposite polarities. It’s easy to swap the wires over on the connector though with a small screwdriver to lift up the plastic tab that holds the crimped wire in place. We use these batteries with AudioMoth Dev for short deployments.
https://www.adafruit.com/product/258