A recent testing has showed that the Android 6.0 Marshmallow extends the Nexus 5's battery life significantly when the device is left in idle mode.

According to a German tech site as relayed by 9to5Mac, results indicated that an Android M-supported Nexus 5 lasts 300% longer than those running on the Android 5.1.1 Lollipop.

The German testers used two Nexus 5 smartphones for their experiment. The first one ran on the Lollipop while the other ran on the Android 6.0 Marshmallow aka the Android M.

After leaving both devices idle for a day, the Nexus 5 on the Lollipop consumed 12 percent charge while the one running Android M merely deducted 4.5 percent charge. After two days, the Lollipop Nexus 5 had lost 24 percent of its battery life, while the Android M Nexus 5 only lost nine percent.

The Lollipop Nexus 5 could last a maximum of 200 hours when idle, while the Android M Nexus 5 could last up to 533 hours if untouched. That means the latter could last 2.7 times longer than the former, the German testers found out.

What's more interesting is that the Android M that the testers were using was merely the first developer preview of the Marshmallow OS. Imagine what the final version has in store for Android devices in the battery-saving department.

However, it's worth noting that the recent test was done with a pair of Nexus 5s. The results do not definitively mean that the same results can also be expected with other Android devices that will eventually run on the Android M.

Nexus 5 users should also take this recent discovery with caution since the results were only idle devices. The findings did not conclude as to whether or not the Android M Nexus 5's battery life also lasts longer when in use as compared to that of the Lollipop-based Nexus 5.

Nonetheless, Android fans looking for longer battery lives can expect great things from Google's OS on next-gen Samsung Galaxy devices.

Testers from Sam Mobile were impressed with the Galaxy A8's and the Galaxy J5's. Test showed that the smartphones only consumed two to four percent of their battery juices when left alone overnight.

Another Galaxy device running on the Android 5.1.1 Lollipop straight of the box is the Galaxy Note 5. The Note 5 had a 3,000 mAh battery, 220 mAh less than the Note 4 yet the newer Note tablet came with a built-in Android 5.1.1 Lollipop OS.

According to testers from Phone Arena, the Note 5's battery life actually lasted half an hour longer than that of the Note 4.