Replacement BTI battery for RAZOR Blade 15 BASE STEALTH 2018 15 BASE STEALTH 2019 RZ09-0270 RZ09-02705 RZ09-02705E76 RZ09-02705E76-R3U1 RZ09-02705E75 RZ09-02705E75-R3U1 RZ09-02705E75-R3B1 RZ09-02705J75-R3J1 RZ09-02705J76 4-cell 15.4V,4221mAh Li-Ion