A number of iPhone users are reporting issues with their battery life, with some noting severe battery drain when left off-charge overnight.
Generally, users see the power level drop by a few percentage points when leaving their iPhone off charge overnight. With the release of iOS 14.6, it seems more power is being consumed.
A number of posts made to the Apple Support Forums mention excessive battery drainage. Some users offer that the battery is seemingly draining at a faster rate versus previous iOS releases.
In one case posted on Monday, a user saw Siri consume 70% of an iPhone XS battery from a complete charge. Another had their iPhone 12 see its battery go down to 30% while it was being charged overnight, and a third claimed the update drained the battery faster than their Apple Smart Cover could recharge their iPhone 11 Pro.