BTR6350 Verizon Droid Incredible 2 Replacement Battery 3.7V 1350mAh

Verizon Droid Incredible 2 — 3.7V Li-ion Replacement Battery (BTR6350)

This 3.7V, 1350mAh Li-ion cell replaces the original BTR6350 battery in the Droid Incredible 2 (ADR6350, ADR6350VW). It fits the standard battery bay without modification and connects to the same three-pin contact strip the OEM cell uses. Capacity matches the original 5Wh specification from the product data.

• ADR6350 and ADR6350VW compatibility: Both the Droid Incredible 2 and Droid Incredible II share the same battery bay dimensions (65.00 × 43.80 × 4.50mm), identical contact placement, and the same BMS handshake over the three-pin connector — so one cell covers both variants without any adapter or modification.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the ADR6350 platform. The BMS accepted the charge curve without flagging a fault, and the fuel gauge IC registered capacity without requiring a manual reset cycle.
• Fuel gauge recalibration on first install: After fitting this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before regular use. The ADR6350 fuel gauge IC calibrates its coulomb counter against the first full discharge curve — skipping this step causes the phone to report inaccurate percentages for several cycles afterward.

Sudden shutdown at 20–30% on the Droid Incredible 2

This is a voltage cliff issue, not a capacity defect. When the modem fires a data burst or the screen brightness spikes, the cell must deliver a short high-current pulse. An aging or uncalibrated cell cannot sustain voltage through that pulse, so the phone interprets the voltage drop as a dead battery and shuts off — even though the fuel gauge still showed charge remaining. After the replacement cell has completed one full calibration cycle, the fuel gauge IC maps the new cell's actual discharge curve and the cutoff point shifts back to where it belongs, typically below 10%.

Phone not powering on after the replacement cell sat in storage

Li-ion cells self-discharge in storage. If the cell dropped below approximately 2.5V before installation, the BMS enters a lockout state and blocks current flow to protect the cell from damage. Connect the phone to a wall charger — not a PC USB port — and leave it for 15–20 minutes without pressing the power button. The charge IC delivers a low-current trickle that brings the cell back above the BMS recovery threshold, after which the phone will boot normally.