Motorola's Razr is a foldable phone announced late last year; with a 2,510mAh battery, will the smartphone provide enough power for a full day of use?

It doesn't look good.

The Razr is starting to reach reviewers before it hits store shelves tomorrow (February 6). And early information about the foldable phone's battery is not encouraging.

The most extensive discussion of the Razr's battery comes from Android Central, where Nirave Gondhia is testing the phone. Verdict: Don't expect a full day of battery life from the Motorola Razr.

Total battery life (which defines how long a phone will last on a charge) is so far unimpressive; according to Android Central's review, the Razr's total battery life, also a foldable device but with a larger 4,380 mAh The Razr's total battery life is about half that of the leading Android flagship phones.

A series of tweets by Gondhia illustrate the problem. In the first tweet at 8:08 a.m., the Razr's battery indication is at 97%. In the tweet two hours and 49 minutes later, the battery indication is down to 51%. This is before the Razr is used for power-intensive tasks such as gaming or photography.

Android Central's findings are consistent with another early Razr review posted on YouTube by Phone Battles: in a direct comparison with the iPhone 11 Pro, both phones fully charged streamed YouTube for 2.5 hours left for . After this test, the Motorola Razr's battery indicator drops to 73%, while the iPhone 11 Pro is still at 88%.

If there is a silver lining, Android Central reports that the Razr's screen-on time (the amount of time the phone is actually in use) is about on par with other smartphones. Nevertheless, the Razr's screen-on time is near the lower end of the typical 4-6 hour range that Android Central has observed when testing other phones.

Of course, these are early reviews and we are still waiting to get time on the Razr review unit. Of course, these are early reviews and we are still waiting to get time with the Razr review unit, but we will put the Razr through the same Tom's Guide battery test that we use when evaluating other phones - continuous via LTE until the phone runs out of power Web surfing. The average smartphone lasts about 10 hours in this test, and the longest-lasting model lasts more than 11 hours. We want to see how the Razr stacks up.

Based on specs alone, the Razr's battery is very small, especially for a phone with a $1,500 price tag. For example, the iPhone 11 Pro's battery is 3,046 mAh, which is on the small side considering flagship models have 3,500+ mAh batteries. Still, the iPhone 11 Pro lasted nearly 10.5 hours in our battery tests.

Until then, however, our first impression seems to be that while Motorola's transformation of a classic flip phone into a new-age foldable device is impressive, battery life seems like a major trade-off.