Realme is preparing to launch the P4X Ultra in India with a game-changing 10,000mAh battery—potentially the largest ever in the brand’s portfolio. Spotted on the BIS certification website with model number RMX5107, this endurance-focused smartphone could deliver two-plus days of battery backup, launching by late January 2026 as the ultimate successor to the 7,000mAh P4X 5G.
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Battery Beast: Realme P4X Ultra Leaked Specifications
| Feature | Details |
|---|---|
| Model Number | RMX5107 (BIS certified) |
| Expected Launch | Late January 2026 |
| Battery | 10,000mAh (rumored) |
| RAM/Storage | 12GB RAM + 256GB storage (expected) |
| OS | Android 16-based Realme UI 7.0 (expected) |
| Predecessor | Realme P4X 5G (7,000mAh, ₹15,499) |
| Network | 5G support |
| Availability | India-specific launch |
| Certification | BIS (Bureau of Indian Standards) |
Record-Breaking Battery Capacity
Tipsters and Reddit discussions suggest the P4X Ultra will feature a 10,000mAh battery or larger—significantly surpassing current smartphone standards. This capacity could enable users to go two full days or more on a single charge, addressing India’s growing demand for endurance-focused devices.
If accurate, this would make it Realme’s largest battery smartphone to date, dwarfing the already impressive 7,000mAh found in the P4X 5G launched in December 2025 at ₹15,499.
Building on P4X 5G Foundation
The standard Realme P4X 5G delivered exceptional battery life with its 7,000mAh capacity, 45W fast charging, MediaTek Dimensity 7400 Ultra chipset, and 144Hz display. It targets gamers and heavy users seeking multi-day endurance without frequent charging.
The P4X Ultra appears positioned to amplify this formula—retaining performance credentials while pushing battery boundaries even further. With the P4X 5G already achieving two-day battery life for many users, the 10,000mAh variant could redefine expectations for mainstream smartphone endurance.
Expected Specifications
According to leaks, the P4X Ultra may include 12GB RAM and 256GB internal storage—generous memory configuration supporting heavy multitasking and extensive app libraries. The device is expected to run Android 16-based Realme UI 7.0, offering the latest software experience with Realme’s customization layer.
5G connectivity remains standard, ensuring future-proof network compatibility as India’s 5G infrastructure expands nationwide.
Strategic Market Positioning
BIS certification confirms Realme is preparing the P4X Ultra specifically for India—a market where battery anxiety remains a primary purchase concern. By targeting endurance-focused buyers unwilling to compromise on modern features like 5G and smooth displays, Realme creates a unique positioning between budget and premium segments.
Tipster Yogesh Brar suggests the device could launch before late January 2026, aligning with Realme’s typical product cadence and giving the brand strong positioning ahead of competitors’ spring launches.
Competitive Advantage
Few mainstream smartphones exceed 6,000-7,000mAh capacity, making a 10,000mAh device genuinely category-defining. While some rugged phones offer similar capacities, they typically sacrifice design, performance, or software refinement. If Realme delivers this battery in a sleek form factor with competitive specifications, it would address an underserved market segment.
The P4X Ultra targets users like travelers, content creators, heavy mobile gamers, and professionals requiring all-day reliability without carrying power banks—transforming battery anxiety from daily concern into multi-day confidence.
Pricing Expectations
With the P4X 5G starting at ₹15,499, the Ultra variant with enhanced battery, increased RAM/storage, and newer software could position between ₹18,000-22,000—remaining competitive within the mid-range segment while justifying the premium through unmatched endurance.
As launch approaches, more details on charging speeds, display specifications, camera setup, and exact pricing will emerge. For battery-conscious buyers, the P4X Ultra represents Realme’s most ambitious endurance play yet.
FAQs
When will the Realme P4X Ultra launch in India?
Based on BIS certification and tipster reports, the Realme P4X Ultra is expected to launch by late January 2026.
How big is the Realme P4X Ultra battery?
Leaks suggest a 10,000mAh battery or larger, potentially Realme’s biggest smartphone battery ever, enabling 2+ days of backup.
