REDMI Note 17 Pro Max 5G Launches August 28 in Japan: 10,000mAh Battery, 100W Charging, from 69,980 Yen with Early-Bird Discount

Xiaomi Japan will release the REDMI Note 17 Pro Max 5G, the top model in the REDMI Note lineup, on August 28, 2026^[1]. The phone pairs a 10,000mAh silicon-carbon battery and 100W fast charging with IP68 water resistance and six years of security updates. Suggested retail pricing starts at 79,980 yen including tax, dropping to 69,980 yen with the early-bird discount that runs through October 14.

The First Pro Max in the Series

The REDMI Note series passed 500 million units in global shipments as of May 2026^[1]. The series has built that volume while staying in the mid-range price bracket, and the REDMI Note 17 Pro Max 5G is the first model in it to carry the Pro Max name.

Xiaomi positions it as the new flagship of the series. The entry-level REDMI 17 arrives on the same day, but that model ships with a 7500mAh battery, a Helio G91-Ultra and no 5G support, while the Pro Max moves up a tier in battery, display and processor alike. With early-bird pricing applied, the gap between them is roughly 40,000 yen, so the two are unlikely to compete for the same buyer despite the shared launch date.

10,000mAh, 100W Charging and a Battery Rated for Six Years

The headline feature is a 10,000mAh battery, the largest Xiaomi has ever shipped^[1]. Silicon-carbon technology with a 16 percent silicon content lets that capacity fit into a body 8.65mm thick weighing 229.5g^[1][2]. For comparison, the 7500mAh REDMI 17 measures 8.8mm and 232g, so the Pro Max adds roughly 30 percent more capacity while getting thinner and lighter.

Figures from Xiaomi Internal Labs put runtime at up to 3 days of moderate daily use, and up to 14 days of light outdoor use defined as 30 minutes each of compass, navigation and voice calls per day with GPS always on^[3]. By task, the company cites up to 40 hours of video playback, 24 hours of navigation, 21 hours of gaming and 15 hours of video recording.

Charging runs at up to 100W HyperCharge, and a 100W charger is included in the box^[2]. Under boost mode at 25 degrees Celsius with the screen off, Xiaomi says 20 minutes of charging covers a full day, and even 10 minutes yields about 7 hours of video playback^[3]. Wired reverse charging at up to 27W is also supported, so the phone can feed earbuds or another handset.

For longevity, the phone carries the Xiaomi Surge G2 battery management chipset and holds a five-star TÜV SÜD battery certification, certificate number Z2GCN 099551^[3]. Xiaomi states that capacity stays above 80 percent after 1,600 charge cycles, which it converts to more than six years based on a full charge every 2.19 days. That durability claim, rather than raw capacity, is what actually supports the six-year marketing line.

Rated for 2 Meters of Water for 72 Hours and 3-Meter Drops

Durability is packaged under the REDMI Titan Structure name. The phone is rated IP66/IP68 and cleared a TÜV SÜD immersion test at a depth of 2 meters for 72 hours^[1][3]. The display uses Corning Gorilla Glass Victus 2, and the handset holds SGS certification for drops onto granite from up to 3 meters^[1][3].

One notable extra is Underwater Mode, which lets you shoot photos and video underwater and edit and share them directly from the phone^[1]. Exiting the mode triggers a vibration routine that expels water from the speaker. The feature arrives via OTA update, and Xiaomi limits it to still fresh water, depths within 2 meters and sessions of up to 30 minutes^[3]. Seawater, pools and hot water are out of scope, and liquid damage beyond the test conditions is not covered by warranty, so it is best treated as an occasional extra rather than a diving tool.

6.83-Inch 1.5K OLED with 3,500-Nit Peak Brightness

The display is a 6.83-inch AMOLED panel at 1.5K resolution, 2772 by 1280, for 447 ppi^[2]. Refresh rate tops out at 120Hz, and touch sampling runs at 240Hz normally, rising to an instant 3200Hz when Game Turbo mode is enabled.

Peak brightness is 3,500 nits in UHBM, 2,000 nits in HBM and 1,060 nits typical^[2]. Contrast ratio is 8,000,000 to 1 with 12-bit color depth, and the panel supports HDR10+ and Dolby Vision. On the eye-comfort side there is DC dimming, 3840Hz PWM dimming, 16,000 levels of automatic brightness adjustment and three TÜV Rheinland certifications covering low blue light, circadian friendliness and flicker-free operation.

Audio comes from dual speakers with Dolby Atmos and Hi-Res support and a 400 percent volume boost^[2]. That figure refers to 17 volume steps mapped onto a 15-step scale rather than a literal quadrupling of loudness, which is worth keeping in mind.

Snapdragon 6 Gen 5, Gemini and Six Years of Updates

The processor is the Snapdragon 6 Gen 5 Mobile Platform, built on a 4nm process with an octa-core layout clocked up to 2.6GHz and an Adreno GPU^[2]. Memory is 8GB of LPDDR5X, storage is 256GB or 512GB, both on UFS 4.1, and memory expansion pushes the effective total to the equivalent of 16GB^[2][3].

The rear camera pairs a 50-megapixel main sensor with optical image stabilization, an f/1.5 aperture and a 6-element lens, alongside an 8-megapixel ultra-wide at f/2.2. The front camera is 32 megapixels at f/2.2^[2]. Video tops out at 4K30 on both front and rear, whereas the entry-level REDMI 17 stops at 1080p.

Software is Xiaomi HyperOS 3, backed by six years of security updates and four OS version upgrades^[1]. Google Gemini ships preinstalled, including Gemini Live for conversations while sharing the camera or screen, and Gemini Omni for conversational video creation and editing^[1][3]. On-device AI features include offline AI interpretation, AI speech recognition that transcribes while recording, and editing tools such as AI Eraser Pro and AI reflection removal^[1][2].

Connectivity covers dual nano-SIM, Wi-Fi 6, Bluetooth 6.0 and NFC, and an infrared blaster is still on board^[2]. Biometrics combine an in-display optical fingerprint sensor with AI face unlock.

Pricing and Availability

The Cloud Brush finish uses photochromic technology that shifts from cloud white to a warm pink-orange in sunlight^[1][3]. That color is also 8.57mm thick, 0.08mm slimmer than Black and Purple^[2].

Carrier availability covers SoftBank Free Style and Y!mobile Free Style, with IIJmio on the MVNO side, plus retailers EDION, Joshin, Bic Camera, Yamada Denki and Yodobashi Camera^[1]. Online channels include the Xiaomi official site, the Xiaomi official Rakuten Ichiba store, Amazon.co.jp, the Xiaomi official store on Yahoo! Shopping and the official TikTok Shop, along with Xiaomi Store locations and the Xiaomi Service Center in Akihabara.

Four launch promotions are on offer^[1]. Beyond the 10,000 yen early-bird discount through October 14, selected channels are giving away a Type-C to Type-C cable usable for reverse charging, the Xiaomi 3A Braided USB-C to USB-C Cable (1m), on a first-come basis. Buyers also get up to 2 months of YouTube Premium, up to 3 months of Spotify Premium, up to 6 months of Google One (200GB), a 24-month quality warranty, one free screen replacement and one free rear cover replacement within 24 months, and one free battery replacement within 36 months. Purchasing the Xiaomi Care protection plan at the same time takes 20 percent off its price.

Summary

The REDMI Note 17 Pro Max 5G is less about the headline 10,000mAh figure than about pairing a battery that holds 80 percent capacity after 1,600 cycles with a six-year update commitment, aimed squarely at buyers who want to keep a phone for a long time. Add the 2-meter, 72-hour immersion rating, 3-meter drop certification and a 6.83-inch OLED peaking at 3,500 nits, and the early-bird price lands at 69,980 yen including tax. The Snapdragon 6 Gen 5 is a mid-range part, so this is not a phone for peak performance seekers, but it makes a direct case to anyone looking to charge and replace their phone less often.

Source[1]: https://prtimes.jp/main/html/rd/p/000000254.000098799.html

Source[2]: https://www.mi.com/jp/product/redmi-note-17-pro-max-5g/specs/

Source[3]: https://www.mi.com/jp/product/redmi-note-17-pro-max-5g/