Xiaomi

REDMI 15C 5G 4 GB + 128 GB Green

Name: REDMI 15C 5G 4 GB + 128 GB Green
Brand: Xiaomi

6,000 mAh battery and 6.9" screen for record autonomy at a tight budget.

Manufacturer reference 4223711740

Colour Green

Black
Green
Violet

Internal storage capacity 128 GB

128 GB
256 GB

Energy class View the energy label (PDF)

65 /100 Its best score: the best battery life, rated "very long" on its category’s scale.

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What the REDMI 15C 5G 4 GB + 128 GB Green is worth

The REDMI 15C 5G focuses on battery life with its 6,000 mAh capacity, well above the market median, and a large 6.9" 120 Hz screen. It packs 4 GB RAM, 128 GB storage expandable up to 1 TB, a 50 MP rear camera, and 5G via a MediaTek Dimensity 6300 processor.

With an autonomy score of 93/100, it stands out for lasting much longer than a typical smartphone. The screen scores 73/100, the camera 70/100, but storage (45/100) and power (45/100) remain below average. Overall score: 65/100.

This model suits those prioritizing battery life and a generous screen under 250 €, while accepting trade-offs on RAM and internal storage for everyday use.

Its scores, criterion by criterion

Scores out of 100, calculated from the datasheet and compared with the market. The full method is public.

Battery life Very long

6,000 mAh · category median: 4,500 mAh

Screen Good

6.9 " · category median: 6.7 "

Camera Good

50 MP · category median: 50 MP

Storage Limited

128 GB · category median: 384 GB

Power Low

4 GB · category median: 8 GB

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Documents

What the manufacturer publishes about this model. Each document opens in a new tab.

Étiquette énergie PDF 66.7 KB Document in Français Fiche d’information produit PDF 61.3 KB Document in Français

Specifications

Design 2

Product colour Green

Dust and water resistance IP64

Memory 3

RAM capacity 4 GB

Expandable RAM Up to 8 GB

Memory type LPDDR4X + UFS2.2

Storage media 2

Internal storage capacity 128 GB

Compatible memory cards Expandable up to 1 TB

Screen 10

Display diagonal 6.9"

Display resolution 1600 x 720 pixels

Maximum refresh rate 120 Hz

Display brightness 660 nits (typ), 810 nits (HBM)

Display type Dot Drop display

Colour gamut 83% NTSC

Colour depth 8-bit, 16.7 million colours

Contrast ratio 1200:1

Touch sampling rate Up to 240 Hz

Dimming technology DC dimming

- 1

Battery capacity 6,000 mAh

Camera 10

Rear camera resolution (numeric) 50 MP

Front camera resolution (numeric) 8 MP

Rear camera aperture number f/1.8

Front camera aperture number f/2.0

Night mode Yes

Rear camera lens 5P lens

Portrait mode Yes

HDR mode Yes

Time-lapse mode Yes

Ultra HD mode Yes

Network 8

Mobile network generation 5G

Bluetooth Yes

SIM card capability Dual SIM

Wi-Fi Yes

Bluetooth version 5.4

Near Field Communication (NFC) Yes

Wi-Fi bands 2.4 GHz / 5 GHz

NFC Yes

Processor 6

Processor model MediaTek Dimensity 6300

Processor cores 8

Processor technology 6 nm

CPU architecture Cortex-A76 + Cortex-A55

Maximum CPU frequency 2.4 GHz

GPU Mali-G57 MC2

Software 1

Operating system installed Xiaomi HyperOS 2

Weight and dimensions 4

Weight 211 g

Height 173.16 mm

Width 81.07 mm

Depth 8.2 mm

Power 1

USB Type-C required charging power (max) 33 W

Representation / rendering 3

Fast charging Yes

Fingerprint reader Yes

Face recognition Yes

Connectivity 3

USB connector type USB Type-C

Headphone jack 3.5 mm

FM radio Yes

Navigation 5

GPS (satellite) Yes

GLONASS Yes

Galileo Yes

BeiDou Yes

Electronic compass Yes

Sensors 4

Ambient light sensor Yes

Accelerometer Yes

Proximity sensor Yes

Vibration motor Yes

Battery 3

Charge cycles (80% capacity) 1,000 cycles

Charging technology Battery Health 3.0

Reverse charging Yes

Audio 2

Audio formats AAC, m4a, mp4, 3GP, AMR, MIDI, imy, MP3, Ogg, wav, FLAC, mkv, Opus, Vorbis, Hi-Res Audio

Bluetooth codecs AAC/SBC/LDAC

Video 3

Video formats mp4, 3gp, AV1, mkv, webm, MPEG-4, H.263, H.264, H.265, VP8, VP9

Rear video recording 1080p at 30 fps

Front video recording 720p at 30 fps / 1080p at 30 fps

Battery life 3

Energy efficiency class A

Music playback Up to 88 hours

Video playback Up to 21 hours

Power management 1

Energy efficiency scale A to G

Who this model suits

It’s for you if

Your first criterion is the battery life: it happens to be its best score.

You want a good score on the screen, above its category average.

You prefer a model tracked across several merchants, to buy at the right time.

Skip it if

Its lowest score is on the power: skip it if that is decisive for you.

Frequently asked questions

Answers drawn from this model’s datasheet.

Yes. With 6,000 mAh, this Redmi 15C far exceeds the market median of 4,500 mAh, earning it a 93/100 autonomy score. The manufacturer claims up to 88 hours of music playback and 21 hours of video.

Yes, RAM is expandable up to 8 GB and the 128 GB internal storage can be extended via memory card up to 1 TB. LPDDR4X and UFS2.2 technology handles transfers.

Yes. The refresh rate reaches 120 Hz and touch sampling goes up to 240 Hz, making scrolling and responsiveness fluid. Brightness peaks at 810 nits in HBM mode.