OnePlus 15T leaks: A compact flagship with a 7000mAh+ battery to crush the Galaxy S26 Ultra
Published on: 6 days ago (Oct/10/2025)
Overview
The upcoming OnePlus 15T is rumored to pack a massive 7000mAh+ silicon-carbon battery, Snapdragon 8 Elite Gen 5 chip, and a compact design that could outshine the Galaxy S26 Ultra.
With the OnePlus 15 yet to officially debut, leaks surrounding its sibling — the OnePlus 15T — have already taken over the internet. According to renowned tipster Smart Pikachu, the upcoming device could sport a 7000mAh+ battery, all while maintaining a compact design.
This move would easily outshine Samsung’s Galaxy S26 Ultra, which is rumored to stick with the same 5,000mAh battery — proving that Chinese brands are clearly leading the battery innovation race.
OnePlus 15T Expected Specifications
| Feature | Specification (Rumored) |
|---|---|
| Display | 6.3-inch LTPO AMOLED (Flat) |
| Resolution | FHD+ (120Hz refresh rate expected) |
| Processor | Snapdragon 8 Elite Gen 5 |
| RAM & Storage | Up to 16GB RAM, 512GB Storage (expected) |
| Rear Camera | Triple Camera Setup (Main + Ultra-wide + Telephoto) |
| Front Camera | 32MP (expected) |
| Battery | 7000mAh+ (Silicon-carbon) |
| Charging | 100W SuperVOOC Fast Charging |
| Fingerprint | Ultrasonic under-display sensor |
| Build | Metallic Frame |
| OS | OxygenOS based on Android 15 |
| Launch Timeline | March–April 2026 |
| Expected Global Variant | OnePlus 15s |
Battery & Performance
The headline feature of the OnePlus 15T is undeniably its massive 7000mAh+ battery — something we haven’t seen in such a compact body before.
Compared to the Galaxy S26 Ultra’s 5000mAh cell, OnePlus is clearly aiming for dominance in battery life.
Moreover, this battery will likely use silicon-carbon technology, which offers:
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Higher energy density (more power in less space)
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Better charging efficiency
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Longer overall lifespan
Coupled with the Snapdragon 8 Elite Gen 5 processor, users can expect blazing-fast performance in gaming, multitasking, and camera processing.
Display & Design
The OnePlus 15T is rumored to feature a 6.3-inch flat AMOLED panel, likely with LTPO technology for adaptive refresh rates. This ensures smooth transitions and better battery management.
Design-wise:
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Metallic frame gives it a more premium build
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Ultrasonic fingerprint sensor replaces the traditional optical one — faster and works with wet fingers
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Expected introduction of the new "Plus Key", first seen on the OnePlus 13s
Camera Expectations
While not much is confirmed, the camera setup will likely include:
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A main 50MP Sony sensor
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A 12MP ultra-wide lens
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A telephoto or macro sensor
Given OnePlus’s focus on Hasselblad tuning, users can expect better color accuracy and night photography compared to previous models.
OnePlus 15T vs Galaxy S26 Ultra (Expected Comparison)
| Feature | OnePlus 15T | Galaxy S26 Ultra |
|---|---|---|
| Battery | 7000mAh+ | 5000mAh |
| Processor | Snapdragon 8 Elite Gen 5 | Snapdragon 8 Elite Gen 5 (for some regions) |
| Display Size | 6.3-inch Flat AMOLED | 6.8-inch Curved AMOLED |
| Fingerprint Type | Ultrasonic | Ultrasonic |
| Design | Compact, Metallic | Tall, Glass-Aluminum |
| Charging Speed | 100W SuperVOOC | 45W Fast Charging |
| Expected Launch | March–April 2026 | February 2026 |
Verdict: The OnePlus 15T could offer better battery and charging speed, while the Galaxy S26 Ultra may still hold an edge in camera and software polish.
Pros and Cons
| Pros | Cons |
|---|---|
| Massive 7000mAh+ silicon-carbon battery | Compact body might limit cooling |
| Snapdragon 8 Elite Gen 5 performance | Possibly no wireless charging |
| Ultrasonic fingerprint reader | Camera details still uncertain |
| Flat AMOLED LTPO display | Availability may be limited at launch |
| Premium metallic design | Expected to launch in China first |
Launch and Availability
According to Smart Pikachu, the OnePlus 15T is scheduled to launch between March and April 2026 in China, with a global rollout as the OnePlus 15s to follow shortly after.
Final Verdict
If these leaks turn out to be accurate, the OnePlus 15T could redefine what a compact flagship can do. A 7000mAh+ battery, Snapdragon 8 Elite Gen 5, and a premium design all wrapped into a sleek body — this might just be OnePlus’s boldest move yet.
The battery race is heating up, and for now, it seems OnePlus might just leave Samsung behind in 2026.