The Atmotube PRO 2 uses a 2300 mAh lithium-polymer battery.
Actual battery life varies with how frequently particulate matter (PM) measurements are taken and whether GPS tracking is active.
| PM Read Interval | Expected Working Time (GPS Off) | Expected Working Time (GPS Always On) 
 | Expected Working Time (Timer GPS) | 
| continuous (1 sec) | 1 d 12 h | 1 d 3 h | 1 d 10 h | 
| 5 min | 6 d | 2 d 17 h | 5 d 3 h | 
| 10 min | 8 d | 3 d | 6 d 9 h | 
| 15 min | 10 d | 3 d 3 h | 6 d 22 h | 
| on demand | 12 d | 3 d 10 h | 8 d 10 h | 
Adjusting settings to extend battery life:
- To change the PM sensor measurement interval: 
 App → Settings → Sensors → PM Read Interval
- To change the GPS mode: 
 App → Settings → GPS → GPS Mode
Li-poly Battery Lifetime
Lithium-polymer (Li-poly) rechargeable batteries require proper care and handling to ensure safe operation and achieve maximum lifespan. Follow the guidelines below for optimal performance.
Avoid long periods of inactivity
- Do not leave the battery unused for extended periods, either inside the device or in storage. If the battery has not been used for more than six months, check its charge level and recharge or dispose of it appropriately. 
Expected service life
- The typical lifespan of a lithium-polymer battery is two to three years or 300 to 500 charge cycles, whichever occurs first. 
- One charge cycle is defined as using the battery from fully charged to fully discharged, and then recharging it again. 
- For batteries that are rarely fully discharged, use a two- to three-year life expectancy as a reference. 
Capacity loss over time
- Rechargeable lithium-polymer batteries have a limited life and will gradually lose their capacity to hold a charge - this process is irreversible. As capacity decreases, so does the runtime of the device. 
Self-discharge
- Even when not in use, lithium-polymer batteries slowly discharge over time. Always store them in a cool, dry place and recharge periodically to maintain performance. 
