The battery life of the Fitbit Versa 4 and Sense 2 is generally similar, with both devices offering around six or more days of battery life under typical usage conditions. However, the use of specific features like SpO2 (blood oxygen monitoring) and cEDA (continuous electrodermal activity) can impact this duration.
Impact of SpO2 Monitoring
SpO2 monitoring is available on both the Versa 4 and Sense 2. While it does consume some battery, it is not as significant a drain as features like GPS or always-on display. The Versa 4, lacking some of the advanced sensors found in the Sense 2, might slightly benefit from less power consumption when only SpO2 is considered, but the difference is likely minimal[3][4].Impact of cEDA Monitoring
The Sense 2 includes a cEDA sensor for continuous stress tracking, which is not available on the Versa 4. While cEDA does consume some battery, users have reported that it does not significantly reduce the overall battery life compared to other features like GPS. However, continuous monitoring means that the Sense 2 might experience slightly faster battery drain compared to the Versa 4 when all other conditions are equal[2][3].General Battery Life Considerations
- GPS Usage: Both watches experience significant battery drain when GPS is used extensively. For example, GPS can reduce battery life to around 12 hours of continuous use[1][4].- Always-On Display: Enabling the always-on display feature can cut battery life to about two to three days, depending on usage patterns[1].
- Fast Charging: Both devices support fast charging, allowing for a day's worth of battery life with just 12 minutes of charging, which is beneficial for quick top-ups[5].
In summary, while both watches have similar battery life, the Sense 2's additional features like cEDA might slightly reduce its battery life compared to the Versa 4 when these features are actively used. However, the difference is not dramatic, and both devices offer robust battery performance compared to many other smartwatches on the market.
Citations:[1] https://www.fitandwell.com/features/fitbit-sense-2-vs-versa-4
[2] https://community.fitbit.com/t5/Sense-2/Battery-usage-stats/td-p/5250486
[3] https://www.androidcentral.com/wearables/fitbit-sense-2-vs-versa-4
[4] https://www.zdnet.com/article/a-month-with-fitbits-sense-2-and-versa-4-good-health-and-fitness-features-but-beware-gps-use/
[5] https://thegadgetflow.com/blog/fitbit-sense-2-vs-versa-4-my-honest-take/
[6] https://connectthewatts.com/2022/09/29/fitbit-sense-2-review/
[7] https://www.digitaltrends.com/mobile/fitbit-versa-4-vs-sense-2/
[8] https://www.pcmag.com/reviews/fitbit-versa-4
[9] https://9to5google.com/2022/11/22/fitbit-sense-2-versa-4-review/
[10] https://www.businessinsider.com/guides/tech/fitbit-sense-2-vs-versa-4