Realme is preparing to introduce a groundbreaking smartphone in its P-series lineup for the Indian market, anticipated to launch by the end of January 2026. The highlight of this new device, identified by the model number RMX5107, is its exceptionally large 10,000mAh battery, a significant step up from current smartphone battery capacities. Sources indicate the phone has already received certification from the Bureau of Indian Standards (BIS), a crucial step that confirms its imminent arrival in India. Realme had previously hinted at a 10,000mAh battery prototype in May 2025, with a commercial launch planned for early 2026. The upcoming P-series phone is expected to be a mainstream device, not a rugged one, leveraging new silicon-carbon battery technology to maintain a relatively slim profile despite its huge power cell. Reports suggest it will be marketed through Flipkart, with teasers for the P-series already live on the e-commerce platform. While the exact marketing name remains unconfirmed, it's speculated to be the Realme P5 or P5 Pro. Other leaked specifications for the RMX5107 include 12GB RAM, 256GB internal storage, and Realme UI 7.0 based on Android 16. The phone is also rumored to feature a triple rear camera setup with a 50MP main sensor. This launch positions Realme to potentially set a new benchmark for smartphone battery endurance in the Indian market.