Tecno BL-49FT Original-Capacity Replacement Battery (5000mAh)

The BL-49FT (frequently indexed as BL49FT) is a high-capacity internal Lithium-ion Polymer replacement battery manufactured under the Transsion Holdings supply network for a large fleet of Tecno’s most successful budget and mid-tier smartphones. Because these specific devices power large screens and multi-lens camera systems, an aging factory cell will often degrade, resulting in rapid power loss below 30%, unexpected system freezes, or keeping the phone trapped in an infinite boot loop on the “Tecno” startup splash screen. Upgrading to a premium replacement cell safely restores your phone’s multi-day standby lifecycle.

• Battery Model: BL-49FT / BL49FT

• Battery Type: Lithium-ion Polymer (Li-Po)

• True Capacity: 5000 mAh (Typical) / 4900 mAh (Rated)

• Standard Voltage: 3.85V

• Charging Voltage Limit: 4.4V

• Safety Integration: Formulated with an original-grade double-IC Protection Circuit Board (PCB). This safeguards the mainboard logic array against sudden electrical overloads, eliminates chemical bloating caused by overnight charging cycles, and dynamically updates real-time battery percentage tracking.

• Device Compatibility: This exact 5000mAh structural profile and flex connecter dock precisely match:

  • Tecno Spark 5 / Spark 5 Pro / Spark 5 Air

  • Tecno Spark 6 Go

  • Tecno Spark 7 Pro

  • Tecno Spark 8P / Spark 9

  • Tecno Spark Go (2020)

  • Tecno Camon 15 / Camon 15 Air

  • Tecno Pop 4 / Pop 4 Air

  • Infinix Note 7