Verizon Trophy Replacement Battery 3.7V 1000mAh Li-ion

Verizon Trophy (MWP6985 / MWP6985VW) — 3.7V Li-ion Replacement Battery

This is a 3.7V, 1000mAh Li-ion replacement cell for the Verizon Trophy smartphone. It fits the MWP6985 and MWP6985VW variants. Swap it in when the original cell can no longer hold voltage under screen or radio load.

• MWP6985 and MWP6985VW fit: Both Trophy variants share the same physical cell dimensions (65.00 × 43.85 × 4.50mm), connector pinout, and 3.7V nominal voltage rail. One cell fits both boards without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Trophy mainboard. The charge IC accepted the cell without fault flags, and the BMS protection circuit tripped correctly at low-voltage cutoff — no runaway charge observed.
• Fuel gauge recalibration after swap: After fitting this cell, run one complete discharge down to auto-shutoff, then charge uninterrupted to 100% before normal use. The Trophy's fuel gauge IC is calibrated to the old cell's discharge curve — skipping this step causes the OS to report inaccurate percentages from the first boot.

Why the Trophy reports the wrong battery percentage after a cell swap

The Trophy uses a coulomb-counting fuel gauge IC that builds its charge model from the previous cell's discharge history. When you install a new cell, that learned model no longer matches the actual discharge curve of the fresh cell. The OS reads the old model, not the real cell state, so it displays percentages that are out of step with actual charge. One full discharge-to-shutoff and uninterrupted recharge resets the coulomb counter against the new cell.

Sudden shutdown at 20–30% on the replacement cell

This happens when the cell voltage drops sharply under high instantaneous load — typically when the CDMA radio transmits or the screen backlight peaks — faster than the fuel gauge IC predicted. The IC still shows 20–30% because it calculated remaining capacity from a flat part of the discharge curve, but the actual cell voltage has already collapsed below the minimum threshold the board will accept. The BMS then cuts power to protect the cell. Complete the recalibration cycle first; if shutdowns persist after that, check that the cell connector is fully seated and making clean contact at all three pins.