Vodafone Smart N8 TLP024C1 Compatible Battery 3.85V 2400mAh

Vodafone Smart N8 / VFD-610 / Smart N9 Lite — 3.85V Li-Polymer Replacement Battery (TLP024C1)

This is a 3.85V, 2400mAh (9.24Wh) Li-Polymer cell for the Vodafone Smart N8 (VFD-610), Smart N9 Lite (VFD620), and compatible variants. It replaces the OEM TLP024C1 battery when the original cell has degraded, swollen, or can no longer hold a usable charge. Physical dimensions are 70.95 × 56.70 × 3.40mm — verify against your existing cell before fitting.

• Smart N8 and N9 Lite platform compatibility: The VFD-610 and VFD620 share the same battery bay geometry, connector pinout, and BMS handshake protocol — both run at 3.85V nominal, so a single cell covers both variants without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Smart N8 platform. The BMS accepted charge from the onboard charge IC without error flags, and protection circuits triggered correctly at undervoltage and overvoltage thresholds.
• Fuel gauge recalibration after swap: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. This lets the phone's fuel gauge IC map the new cell's discharge curve before the coulomb counter locks in its reference points.

Why the Smart N8 reports wrong battery percentage after a cell swap

The Smart N8 uses a fuel gauge IC that builds its percentage model against the discharge curve of the old cell. When a new TLP024C1 goes in, the IC's stored curve no longer matches reality — it may show 50% when the cell is at 30%, or jump from 40% straight to 15%. The fix is one full uninterrupted discharge down to automatic shutdown, followed by a full charge to 100% without interruption. After that cycle the coulomb counter resets its baseline to the new cell. Do not pull the phone off charge early during this first cycle.

Sudden shutdown at 20–30% on the replacement cell

This happens when the modem transmits at full power or the screen peaks brightness — both spike current draw hard enough to collapse cell voltage below the BMS cutoff threshold, even though the fuel gauge still reads 20–30%. A new Li-Polymer cell with an uncalibrated fuel gauge makes this worse because the reported percentage is already inaccurate. Run the single full discharge-charge cycle described above — once the fuel gauge recalibrates, the reported percentage will more accurately reflect the voltage at which the BMS actually cuts out. If shutdowns persist below 3.4V under load after two full cycles, check the battery connector seating before assuming a cell fault.