• Daniel Chaparro

Vivo X51 ViserMark Battery Life

Updated: Jun 15

Battery Life Testing Report – May 2021


The Vivo X51 was one of the chosen devices by the Chinese brand to land in Europe in 2020, it looks similar to the Asian X50 Pro model, however, the X51 has additional improvements and features. With a large battery capacity of 4315 aMh, it has a 33W fast charge as well. Having an aesthetic design that is clean and contemporary with a slim flex screen, it also has a 3.96 mm super small camera. Available in an Alpha Grey bringing high-end fashion into high technology, it offers Motion AF Tracking that lets you choose any object in a frame and keeps focus on it.

Release Date October 2020

Product Features and Specification

  • Design: Sophisticated design with metal borders.

  • Rear Camera (Quad): 48 MP, f/1.6 (Wide), PDAF, Laser AF, gimbal stabilisation.

8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0”, PDAF, 5x O zoom

13 MP, f/2.5, 50mm (telephoto), 1/2.8”, 0.8 µm, PDAF, 2x O zoom

8 MP, f/2.2, 120°, 16mm (ultrawide), 1/4.0”, 1.12 µm

  • Selfie Camera (single): 32 MP, f/2.5, 36mm (Wide), 1/2.8”, 0.8 µm.

Video: 1080@30fps, gyro-EIS.

  • Battery: 4315 mAh (33W fast charge)

  • Display: 6.56" Amoled, 90 Hz, HDR10+

  • Size: 158.5 x 72.8 x 8 mm

  • Weight: 181.5g

  • Memory: 256 GB ROM 8 GB RAM, No cart slot available

  • Chipset: Qualcomm SM7250 Snapdragon 765G 5G (7 nm)

  • Android: Android 10, Funtouch 10.0

  • Software Version: RP1A.200720.012 release-keys

Success Metrics


The Vivo X51 is a ViserMark High tier smartphone (between 500 - 700 EURO). The smartphone has the Qualcomm® Snapdragon™ 765G processor and boosts both high-end flagship performance and low energy consumption.

Testing Results

The Vivo X51 settings allowed us to test the smartphone with two different settings, which included a 90 Hz and 60 Hz refresh rate. Through the ViserMark test protocol, the battery life autonomy was just over 39 hours with a 60 Hz refresh rate, and around 37 hours with a 90 Hz refresh rate. This achieved 171 as a ViserMark Battery Life and Performance score. The average ViserMark score of high tier smartphones is “176”, positioning the Vivo X51 dropped slightly behind some of its direct competitors. Also, the results were translated into 1.5 ViserMark Battery Life Days.

With the 33W fast charge option, we obtained an outstanding charging time of 1 hour and 3 minutes, Vivo advertised 30 mins charging time to 50% which seems correct although it was not verified.

Test Graphics

Figure 1. Battery test at 90 Hz

Vivo X51 Test Graphics


The Vivo X51 ViserMark Battery Life and Performance score reached was 171. As previously mentioned, this positioned this particular smartphone in the low part of the ViserMark high tier ranking table when comparing it to other high tier smartphones of similar battery size. Although the Vivo X51 score is close to other comparative smartphones like the Samsung Galaxy Note 20 (175) and the Oppo Find X2 Neo (179), there is still room for improvement. To reach the top of the ViserMark high tier ranking table and get a performance score like the Samsung S20 F3 5G (221) or the Huawei P40 Pro (211) changes will need to be made.

ViserMark tests are performed with the strictest protocol in a controlled environment to ensure repetition and consistency powered and automated by SmartViser’s test automation solution viSer. The automation test includes a variety of user actions from calls to social media and periods of standby times.

VCX (Valued Camera eXperience) - not available at present.

The VCX Forum has been working with its members on the system and infrastructure as a non-profit organisation. We strive to improve our technology to develop and exchange accurate and objective quality and performance indicators that are our ultimate goal. We will also serve as a compass for the smartphone camera industry. We appreciate your interest in VCX-Forum.

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Vivo is all about 'daring to pursue true perfection, while continuously creating the surprising' Over the past 9 years, they have dared to pursue true perfection, increasingly leading the company to a new height. They unveiled the world’s first Half-Screen In-Display Fingerprint Scanning Technology on Vivo APEXTM , along with Screen SoundCasting Technology and an Elevating Front Camera. Vivo now has over 200,000,000 users and are the preferred brands of young people around the world.

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