Geopeitus
18650 vs 3x AAA
| 18650 (VTC5) | Eneloop AAA x3 | Eneloop AAA | |
| Nominal voltage | 3.6 V | 3.6 V (1.2 x3) | 1.2 V |
| Nominal capacity | 2500 mAh | 2250 | 750mAh |
| Weight | ~45 g | ~35 g | ~12 g |
| Energy capacity | 9 Wh | 8.1 Wh | 0.9 Wh |
| Energy per gram | 9Wh/45g = 0.2 Wh per gram | 8.1Wh/35 = 0.23 Wh per gram | 0.08Wh/12 = 0.08 Wh per gram |
https://www.omnicalculator.com/other/battery-capacity
Take a pic of webpage at certain time
apt install firefox-esr
crontab -e
1-5 4 * * * firefox -headless -screenshot /home/qrl/geopeitus/tom-bombadil-`date +"\%Y-\%m-\%d_\%H-\%M"`.png -window-size 1920,1080 https://keila.advent.ee/TolkienCache/OneCache.php?aare=Tom_Bombadil
1-5 6 * * * firefox -headless -screenshot /home/qrl/geopeitus/rohan-`date +"\%Y-\%m-\%d_\%H-\%M"`.png -window-size 1920,1080 https://keila.advent.ee/TolkienCache/OneCache.php?aare=Rohan