How long do 8 AA alkaline batteries last at 20 triggers a day?
Energizer Ultimate Lithium AA (8-pack)
$11.99 listed price, changes often See it on AmazonHow long does 8 AA alkaline last by capture mode?
The pack holds about 16 usable watt-hours at room temperature in our model. Half of the 20 daily triggers are assumed to come at night.
| Setup | Energy a day | Days |
|---|---|---|
| SD-card camera, photos | 0.116 Wh | 138 |
| SD-card camera, 10 s video | 0.586 Wh | 27 |
| Cellular camera, photos, good signal | 0.430 Wh | 37 |
At 20 triggers a day, night triggers are the biggest photo-mode cost, because each one fires the infrared array.
How much does cold weather shorten it?
| Temperature | SD-card camera, days | Cellular camera, days |
|---|---|---|
| 70F | 138 | 37 |
| 32F | 90 | 24 |
| 20F | 69 | 19 |
| 0F | 41 | 11 |
| -20F | 21 | 6 |
Alkaline cells are the cheapest per set but the worst value in a trail camera: they sag under the IR flash load and lose half their capacity at 20F. Swapping to lithium roughly doubles runtime in warm weather and does far more in the cold.
Same pack, other trigger counts
5 a day, 10 a day, 35 a day, 50 a day, 100 a day, 200 a day. Other batteries at 20 a day: 8 AA lithium, 12 AA lithium, 8 AA NiMH rechargeable, 6 AA lithium, 12V 7Ah external battery.
These are engineering estimates for comparing setups. Real cameras differ by roughly 40% either way depending on the model, IR array, signal strength and firmware.
Batteries and power that last longer
Lithium AAs in bulk, USB-C rechargeable lithium, solar and 12V external power.
Frequently asked questions
How long do 8 AA alkaline batteries last in a cellular trail camera?
At 20 triggers a day with good signal, about 37 days in our model, against 138 days in an SD-card camera on the same pack. The cellular radio's standby and uploads are the difference. Weak signal (one or two bars) cuts it further, because the camera retries uploads.
What drains trail camera batteries fastest?
In order: cellular uploads on weak signal, video clips at night, infrared night photos, and a busy spot that triggers hundreds of times a day. Cold weather then shrinks whatever capacity is left, especially with alkaline cells. Lithium AAs, photo mode, a longer delay and a spot with better signal all extend runtime.
Researched from published specifications, brand plan lists and verified owner reviews; we do not claim hands-on testing. General information, not professional, legal or security advice. Trail camera rules differ by state: some restrict transmitting cameras during hunting seasons or on public land, so check your state wildlife agency. Recording and audio laws vary; only record where you have the right to.