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  • Daniel Chaparro

Vivo X51 - Battery Performance Score

Updated: Oct 12, 2022


Battery Capacity mAh: 4315


Smartphone Battery Performance: Ranking #57

In the lower half for Battery Performance within the


Battery Performance Testing and Review – 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 Vivo 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


Battery Performance


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.

The overall Battery Performance Score is now a global score taking calculations from Battery Life, Power Efficiency and Charging Times.

From the Vivo X51 test results, we have given this Smartphone a ViserMark score of 44. The Battery Performance Label, being nearer 100 indicates that it is one of the mid-range performing ones and has been ranked in 57th place of the best Battery Performance Smartphones as tested by SmartViser.


Testing Results

BATTERY LIFE - Days of Use

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 1.5 Days of Use as a ViserMark Battery Performance score. With the average Days of Use ViserMark Battery Life score of a High Tier, Smartphone being “1.7” Days, the Vivo X51 matches the majority of similar Smartphones that also achieved this Battery Life score.


CHARGING TIME - Hours and Minutes

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

Our testing is based on real smartphone usage from 100% battery level down to Power Off. When testing Smartphones, the testing protocol includes common daily life activities, for instance: Calls, Web, Video and Music streaming, Gaming, Social networks, Picture & Video capture and standby.

All testing is performed under strictly controlled test conditions with all activities being executed in a defined order and timeline.

Figure 1. Battery test at 90 Hz

Vivo X51 Test Graphics

There are a number of power-efficient processors, within today's Smartphones, that are able to cope with the growing number of new applications and can support high-resolution displays without compromising battery life.

Power Efficiency is calculated using Battery Life and Battery Capacity. This is expressed in “Leaves" and reflects a rating between 1 being least and 5 being the most power-efficient.

The Vivo X51 achieved an overall Power Efficiency Score of 1.0 and is placed in the lower half of the most Power Efficiency Smartphones within the High Tier.



The Vivo X51 ViserMark Battery Performance score reached was 44. 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 OnePlus 8 Pro (46) and the Oppo Find X2 Neo (47). There is still room for battery life improvement to reach the top of the ViserMark High Tier ranking table and get a Battery Performance score like the Samsung S20 F3 5G (50) or the Huawei P40 Pro (51).


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 brand of young people around the world.


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If you're looking for the best smartphone on the market, battery performance is one of the key decisive aspects then ViserMark is for you.

Not only is ViserMark the first label that measures battery performance, translating mAh into direct battery life scores, but it is also a highly valuable marketing asset to device manufacturers and end-users. ViserMark is a benchmark to help make better-informed choices when buying a Smartphone. 


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