The Config App will tell you the daily energy consumption of any configuration that you set. The example below is for 24-hour continous recordings with 55 seconds individual WAV files and 5 seconds between them. Daily energy consumption is 280mAh and good quality rechargeable batteries will have a capacity of about 2800-2850mAh giving about 10 days. At sample rates of 48 kHz and lower, you can also select 'Enable energy saver mode' to save another 30% with a small decrease in recording quality. The final capacity depends a bit of temperature and the condition of the battery. The biggest variable in deployment lifetime in the choice of SD card as their energy consumption varies very widely - https://www.openacousticdevices.info/sd-card-guide - sometime by a factor of four. The energy calculations are for 32GB SanDisk Extreme (red and gold) cards which are reliable and low-energy. Larger cards will use a little more energy, but the difference between 64GB and 32GB is minimal.
Of course there are many variables that are factory in battery life but to give you an idea - We regularly use AudioMoths at an RSPB reserve in Mid Wales, UK and on a recent deployment recording at default frequencies for 9 hours a day, the batteries were still going after 16 days of use. We use the best energiser rechargeables we could find. I hope that's of some use to you.
The Config App will tell you the daily energy consumption of any configuration that you set. The example below is for 24-hour continous recordings with 55 seconds individual WAV files and 5 seconds between them. Daily energy consumption is 280mAh and good quality rechargeable batteries will have a capacity of about 2800-2850mAh giving about 10 days. At sample rates of 48 kHz and lower, you can also select 'Enable energy saver mode' to save another 30% with a small decrease in recording quality. The final capacity depends a bit of temperature and the condition of the battery. The biggest variable in deployment lifetime in the choice of SD card as their energy consumption varies very widely - https://www.openacousticdevices.info/sd-card-guide - sometime by a factor of four. The energy calculations are for 32GB SanDisk Extreme (red and gold) cards which are reliable and low-energy. Larger cards will use a little more energy, but the difference between 64GB and 32GB is minimal.
Alex
Of course there are many variables that are factory in battery life but to give you an idea - We regularly use AudioMoths at an RSPB reserve in Mid Wales, UK and on a recent deployment recording at default frequencies for 9 hours a day, the batteries were still going after 16 days of use. We use the best energiser rechargeables we could find. I hope that's of some use to you.