Mi 9 power battery. Hardware, Performance, & Gaming

Xiaomi Redmi 9 Battery test : Large capacity

The budget-friendly Xiaomi Redmi 9 made its appearance in June 2020, packing a Mediatek Helio G80 (12 nm) chipset; a 6.53-inch, 391-ppi IPS LCD screen with 1080 x 2340 resolution and a 60 Hz refresh rate; and a quad-camera setup — all powered by a large 5020 mAh battery. We put the Redmi 9 through our comprehensive set of Battery tests and present our most important findings in this review.

  • Battery capacity: 5020 mAh
  • 10W charger included
  • 6.53-inch, 1080 x 2340, 60 Hz refresh rate IPS LCD display
  • Mediatek Helio G80 (12 nm) chipset, 4G
  • Tested ROM / RAM combination: 64 GB 4 GB version

About DXOMARK Battery tests: For scoring and analysis in our smartphone battery reviews, DXOMARK engineers perform a variety of objective tests over a week-long period both indoors and outdoors. This article highlights the most important results of our testing. (See our introductory and how we test articles for more details about our smartphone Battery protocol.)

Test summary

Sub-scores and attributes included in the calculations of the global score.

Xiaomi Redmi 9

These key points are derived from the lab measurements during testing and do not figure into the overall score. The lab measurements, however, are used for the overall score.

Please be aware that beyond this point, we have not modified the initial test results. While data and products remain fully comparable, you might encounter mentions and references to the previous scores.


  • Expends lots of power when streaming video and when gaming
  • Poor charging, especially in 5-minute power boost tests

The Xiaomi Redmi 9 comes with a quite large battery, but its test results across the board currently place it last in our rankings. Although it can provide users with two or more days of autonomy (depending on intensity of use), other devices in its segment provide noticeably more hours of battery life. Although its score for charging low, it’s worth pointing out that if the Redmi device had come with an 18W charger (which it can use) rather than the included 10W adapter, its scores would have been better for that attribute as well as for overall power efficiency.

We compared the Redmi 9’s performance in several key categories with two other Essential devices, the Realme C11 and the Vivo Y20s; battery capacity, charger, display type and resolution, and processor specifications for all three devices are shown in the table below.

Xiaomi Redmi 9

Autonomy (55)

How long a battery charge lasts depends not only on battery capacity, but also other aspects of the phone’s hardware and software. The DXOMARK Battery autonomy score is composed of three performance sub-scores: (1) Stationary, (2) On the go, and (3) Calibrated use cases. Each sub-score comprises the results of a comprehensive range of tests for measuring autonomy in all kinds of real-life scenarios.

The Redmi 9 earned below-average scores in all three autonomy sub-attributes. The phone achieves two days of battery life in moderate usage. Though particularly good when screen is off, such as when making phone calls and listening to music, it struggles when screen is on. Though its display provides a good viewing experience for gamers and watching videos, this comfortably high resolution comes at a cost to battery life.

One bright note is that the Redmi 9 shows good battery linearity, with no precipitous drops after its gauge indicates 20% power remaining.

Let’s take a look at some of the details of the Redmi 9’s performance in our autonomy sub-attributes.


A robot housed in a Faraday cage performs a set of touch-based user actions (what we call our “typical usage scenario”) — making calls, video streaming, etc. — 4 hours of active use over the course of a 16-hour period, plus 8 hours of “sleep.” The robot repeats this set of actions every day until the device runs out of power.

power, battery, hardware, performance, gaming

The Redmi 9 provided nearly 53 hours of autonomy, several hours less than the Realme and Vivo devices. The graph below shows how the Xiaomi Redmi 9 and its rivals performed in our robot-driven typical usage scenario:

On the go

Using a smartphone on the go takes a toll on autonomy because of extra “hidden” demands, such as the continuous signaling associated with cellphone network selection, for example. DXOMARK Battery experts take the phone outside and perform a precisely defined set of activities while following the same three-hour travel itinerary for each device.

The Redmi 9 performed less well than the competition on the go for GPS and most other use cases except for camera (though in fairness, it essentially tied with the Realme C11 when making phone calls — a quite impressive achievement).


For this series of tests, the smartphone returns to the Faraday cage and our robots repeatedly perform actions linked to specific sets of activities (use cases) such as gaming, streaming, etc. Starting from an 80% charge, all devices are tested until they have expended at least 5% of their battery power.

The Redmi 9’s results in our calibrated use case tests were mixed. By itself, it had a better data and streaming performance when using Wi-Fi than when using a cellular network, but that said, it came in behind both rivals when streaming video by either means. However, it put in a good performance for video playback.

Charging (51)

The DXOMARK Battery charging score is composed of two sub-scores, charging speed and quick power boost. Charging speed tests assess the reliability of the battery power gauge; measure how long it takes to charge a battery from 0% to 80% capacity and from 80% to 100%; and measure how long and how much power the battery takes to go from an indicated 100% to an actual full charge. With the phone at different charge levels (20%, 40%, 60%, 80%), quick power boost tests measure the amount of charge the battery receives after being plugged in for 5 minutes.

Full charge

It takes the Xiaomi Redmi 9 more than three hours to go from empty to a completely full charge, and just a little less than two hours to go from 0% to 80% when charging; these times put it pretty much on par with the Realme C11, with both devices and their 10W chargers trailing the Vivo Y20s by more than a half-hour.

Quick boost

By plugging in the Redmi 9 for 5 minutes, users will be able to gain around 1 hour 20 minutes of autonomy no matter the stage of the battery — a result that definitely makes us regret that the in-box charger delivers only 10W instead of 18W. Again, though, its results are very comparable to those for the Realme C11.

Mi 9 power battery

Image for presentation only.Actual product canbe different from the product shown.

Product Details

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  • Stable performance, with high backup time. Fast charge v2.0 technology
  • Quality tested before shipping (QC done).


Delivery Time of the product:

The delivery time of the product depends on the availability of the product the shipping method selected at the time of checkout. In most cases, when an order is received it is sent to our ordering department is completed within the time shown while making the order.

For any further clarifications, please contact us here or call us on 09599197756

Is the Redmi 9 Power well designed?

With every successive iteration, Xiaomi has been pushing the design language of the Redmi series in fresh directions. The same is true for the Redmi 9 Power as well, which errs more towards the realme school of design. Regardless, the phone looks fetching with its weaved pattern and the matte back finish that further adds to the grip as well.

The quad-camera module sits towards the top, and you’ll spot a gigantic Redmi logo emblazoned towards the bottom. I’m really not a fan of brands using smartphones as their personal advertising space, but hey. design is subjective.

The button layout is a standard affair, with the power button and volume rocker sitting over on the right and offering sufficient tactile feedback.

over, the fingerprint reader is embedded into the power button and is very quick to unlock the phone. Elsewhere, you’ll find a USB-C port at the bottom, a 3.5mm audio jack at the top as well as an IR blaster — a well-rounded package.

Over at the front is a 6.53-inch Full HD display alongside Gorilla Glass 3. Redmi phones at this price tend to have quality displays, and the one on the Redmi 9 Power is no exception. It’s nice and bright with well-saturated colors.

Another aspect of the phone that stood out to me was the weight. Clocking in at 198g, the Redmi 9 Power isn’t the lightest you can get in the segment, but the large battery capacity puts things in perspective. The phone is comfortable to hold over long durations.

A nice feature is the inclusion of stereo speakers, though peak volume and sound quality isn’t something worth writing home about.

What is the Redmi 9 Power like to use?

Powered by the Snapdragon 662 chipset, the Redmi 9 Power is only the second of its kind after the Moto G9. The Snapdragon 662 is essentially a spruced-up Snapdragon 660 chipset with a faster Adreno 610 GPU. Performance from the octa-core chipset is alright for day to day use, but the phone is certainly not a powerhouse. Elsewhere, there’s 4GB of RAM and 64 or 128GB of storage onboard. It can be expanded further using a microSD card.

Like always, Xiaomi has done a decent job at optimizing MIUI 12 for the hardware. Day to day usability is excellent. The software is nice and fluid with no apparent lags. However, launching apps isn’t quite the fastest in its segment, and this is particularly noticeable in games.

Talking about games, popular titles aren’t the quickest to load, nor can you crank up the settings too high. However, I was able to get some titles like Call of Duty Mobile, Stardew Valley, and Pokémon Go running fine on the phone.

Where MIUI 12 suffers is its incessant insistence on bloatware and pre-installed apps. It’s a recurring theme, but while I can begrudgingly accept Xiaomi’s own suite of apps, the included installs of WPS Office. LinkedIn, Moj, Dream 11 and more are irritating, to say the least.

Then there’s GetApps which pops up a notification the first time you set up the device. This is not the experience you want from a brand new smartphone.

How’s the battery life on the Redmi 9 Power?

The name of the phone is a dead giveaway for the real USP here, and that’s the battery life. A 6,000mAh battery is huge. Paired up with the frugal processor, the Redmi 9 Power goes on forever. I could easily get two days of regular use out of the phone. With more frugal use, you could push this to three days as well.

The 6,000mAh battery lasts forever which is great since charging the phone takes well over two hours.

Most users should feel no need to charge the device daily. This is great since charging the phone does take a lot of time. While the Redmi 9 Power ships with a 22W charger in the box, charging speeds are capped at 18W. This means you’ll be waiting over two hours for the phone to top-up from scratch.

Fingerprint sensor and Face unlock

The phone has a fingerprint sensor on the ride side, embedded into the power button. It immediately unlocks the phone just by keeping your finger on the power button so that you don’t have to press it. This is more convenient compared to the rear-mounted fingerprint scanner and faster than the in-display fingerprint scanner. You can add up to 5 fingerprints. You can also use the fingerprint for app local and payments in apps. The phone also supports face unlock, but it is not as secure as fingerprint since it can be unlocked with a photo.

Music Player, FM Radio and Multimedia

The Mi Music Player is the default music player with usual Xiaomi audio effects and equalizer. It also has FM Radio with recording. Audio through the speaker is loud. Since the phone has stereo speakers audio is louder than the mono speakers found in most smartphones in the price range, which is a good move. Audio through earphones is good as well.

power, battery, hardware, performance, gaming

This comes with Widevine L1 support out of the box so that you can enjoy HD content on Amazon Prime Video, Netflix, Hotstar and other streaming apps. This is good for a phone in the price range.

Dual SIM and Connectivity

It supports 4G VoLTE for Reliance Jio, Airtel and other networks and support Dual 4G VoLTE that offers 4G in both the SIM cards at a time. There is Snapdragon X11 LTE modem, but you can’t expect carrier aggregation in the price range. Other connectivity options include Dual-Band Wi-Fi 802.11 ac (2.4 5GHz), Wi-Fi calling / VoWiFi support, Bluetooth 5.0 LE and GPS. It also has USB OTG support that lets you connect USB drives. Moving on, the call quality is good, and we did not face any call drops and the earpiece volume was loud. It has stock dialer and messaging apps.

The Redmi 9 Power’s body SAR is 0.865 W/Kg (Distance:15mm) and head SAR is at 0.868W/Kg which is below 1W/kg, even though the limit in India is 1.6 W/kg (over 1 g).


The Redmi 9 Power packs a quad-camera setup on the back and a single camera on the front. The backside has a 48 MP AI quad-camera with the other three cameras, 8 MP wide-angle, 2 MP depth, and 2 MP macro, the front side has an 8 MP selfie camera. At this price, the Redmi 9 Power offers a quad setup with a primary camera of 48 MP which is noteworthy.

Speaking of the user interface, you get the regular Xiaomi camera app loaded with features HDR and AI, among other things. You get the Macro feature, the Vlog feature, as well as Night mode, 48 MP mode, Panorama, and more.

Photos taken with the Redmi 9 Power is surprisingly good, the 48 MP camera is a star in this segment, take a look at the photos captured from the main camera in daylight. The wide-angle camera captured a significantly wider field of view, the macro camera seems okay, nothing interesting in it, the depth mode or the portrait mode takes impressive shots, the camera is good for the price.

Battery Life

On the battery side, the Redmi 9 Power packs a massive 6,000 mAh battery with fast charging support up to 22.5W. Comparing with the smartphones in the budget segment, there’s no doubt the Redmi 9 Power is ahead of others, you will hardly find smartphones with this battery capacity.

When it comes to battery life, the Redmi 9 Power won’t disappoint you, the battery life is highly reliable, assume it to run as much as 2 days on average to moderate use. The battery offers you up to 45 hours of VoLTE calls, 13.5 hours of gaming, 215 hours of music playback, 26 hours of video playback, and 10 hours of video recording.

power, battery, hardware, performance, gaming

The big battery is aided with fast charging technology, the smartphone comes with a 22.5W fast charging adapter, however, the phone can only support up to 18W fast charging.

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