Android L release date - or the over-the-air (OTA) update - did not happen as expected by some Nexus 4 and Nexus 5 owners. Battery issues caused the delay.

Artem Russakovskii, the Android Police founder, made this reply to the complaints of users waiting for the Android L release date or the "Lollipop" update after he posted on his Google+ account that "Builds for Android 5.0 have been released": "Hey guys, I just got word from one of our tipsters that the first OTAs got delayed due to some outstanding bugs, now currently scheduled for the 12th."

The said bug causes Nexus 5 battery to drain at a faster pace when the Wi-Fi is turned on, as reported in the Android Developer Preview site by users who received the Android 5.0 update. They noticed "Miscellaneous" on their battery stats screen and it consumed a huge percentage of their battery usage.

The Senior Developer Programs Engineer for Android, Trevor Johns, replied to their concerns: "Android Engineering is aware of an issue affecting Nexus 5 users running Android 5.0 which causes significant "Miscellaneous" battery usage while Wi-Fi is enabled. This appears to be caused by an abnormally high number of IRQ wakeup events. We are continuing to investigate this issue."

He said that "turning Wi-Fi off when it's not needed seems to be the most commonly recommended workaround".

After awhile, he posted a reply again to the delight of the Nexus 5 users: "This issue has been fixed in the latest builds, and this issue is now considered resolved. Thanks everyone."

According to the report of CNET, this event is ironic considering that "Lollipop is a new battery-saving mode that slows down the CPU and turns off background data when your battery is running low."

Google uncovered Android 5.0 or more popularly known as "Lollipop" last month as it is the operating system for the newly-introduced Nexus gadgets - Nexus 6 smartphone, Nexus 9 tablet, and Nexus Player.

For more Android L release date news and updates, keep posted here.