BL323 2800mAh 7.7V Dual-Cell Li-ion Polymer Battery for Lenovo Legion Y90 Esports Phone 68W

Description

Battery model: BL323
Total equivalent capacity: 2800mAh (1400mAh × 2 cells)
Battery energy: 21.56Wh
Rated voltage: 7.7V (dual-cell series: 3.85V × 2)
Charge limit voltage: 8.85V (dual-cell series: 4.425V × 2)
Battery type: Li-ion Polymer — Dual-cell series design (2S)
Compatible with: Lenovo Legion Y90 Esports Phone
Package include: 1 x battery (complete dual-cell assembly)
Restore the esports power of your Lenovo Legion Y90 with this BL323 2800mAh dual-cell replacement battery. Released in early 2022, the Legion Y90 was Lenovo’s ultimate gaming phone — featuring a 6.92-inch 144Hz AMOLED display with 720Hz touch sampling rate, the flagship Snapdragon 8 Gen 1 processor, dual USB-C ports (side and bottom), dual motors for 4D haptic feedback, twin internal cooling fans, and a side-mounted pop-up camera for landscape streaming. The 68W fast charging could fully charge the phone in approximately 35 minutes, making it one of the fastest-charging phones of its generation. This Li-ion Polymer battery is a complete dual-cell assembly — not two separate batteries — containing both cells in a single package. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Why Dual-Cell Design Matters for Gaming Phones — And Why Your Original Battery Has Degraded: The Legion Y90 uses a dual-cell series design (two 1400mAh cells, 3.85V each, connected in series to produce 7.7V total). This architecture is essential for 68W fast charging: splitting the charging current across two cells reduces heat generation by approximately 40-50% compared to a single-cell design at the same wattage. Less heat means faster sustained charging speeds and better long-term battery health — a critical advantage for gamers who play and charge simultaneously. However, after 3-4 years of heavy use — especially with the demanding combination of high brightness, 144Hz refresh rate, and intensive games like Genshin Impact or Call of Duty Mobile — the original BL323 battery has likely degraded significantly. Common symptoms include: battery draining noticeably faster during gaming sessions, needing to charge before a gaming session finishes, battery percentage dropping rapidly from 30-40% to shutdown, or 68W charging taking 50-60 minutes instead of the original 35 minutes. Rather than retiring a high-performance gaming phone, replacing the BL323 battery restores the original marathon gaming endurance and blazing-fast charging speed. The Legion Y90’s active cooling fans and internal thermal management still work effectively in 2026 — a fresh battery ensures the phone can deliver peak performance without throttling due to power limitations.
Compatibility Note: Fits Lenovo Legion Y90 Esports Phone only. Please confirm your battery model before ordering — BL323 is printed on your original battery. This battery is NOT compatible with Lenovo Legion Duel, Legion Duel Pro, Legion Phone 2 Pro, Legion Y70, or other Lenovo models. The BL323 is a complete dual-cell assembly — one physical battery containing both cells (not two separate batteries). European retailers sell this battery for approximately €29.90-31.99 ($32-35) with 1-year warranty. Always verify your battery model before purchasing.