Dell Streak 7 Replacement Battery TY.2C190.002 3.7V 2800mAh

Dell Streak 7 — 3.7V Li-Polymer Replacement Battery (TY.2C190.002)

This is a 3.7V, 2800mAh Li-Polymer battery for the Dell Streak 7 tablet. It also fits the Looking Glass and Opus One variants that share the same battery footprint and connector. Swap it in when the original cell no longer holds a charge or fails to power the device at all.

• Streak 7, Looking Glass, and Opus One compatibility: All three models use the same 3.7V battery bay, connector pinout, and charge IC handshake — no modification required to fit this cell.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on the Streak 7 platform. The BMS accepted the charge IC handshake without fault codes, and the protection circuit responded correctly to both low-voltage cutoff and over-current conditions.
• Fuel gauge reset after installation: After fitting this cell, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. This forces the fuel gauge IC to recalibrate against the new cell capacity and clears the inaccurate percentage readings that commonly appear after a battery swap.

Streak 7 shutting down between 15–25% remaining

The Streak 7 runs a 7-inch display alongside WiFi and background Android processes simultaneously. Under that combined load, the battery voltage drops faster than the fuel gauge IC expects, and the protection circuit reads it as a hard low-voltage event before the display percentage reaches zero. A new cell with a fresh capacity curve can still trigger this if the fuel gauge is calibrated to the old degraded cell. Run one full discharge-to-shutoff cycle followed by a full uninterrupted charge — the IC relearns the voltage-to-capacity curve at the correct 3.7V nominal and the early shutoffs stop.

Streak 7 reporting wrong battery percentage after a battery swap

The fuel gauge IC on the Streak 7 stores calibration data tuned to the original cell's discharge curve. Drop in a new cell and that stored data no longer matches actual capacity — the percentage readout drifts, jumps, or flatlines at a fixed number. This is not a fault in the replacement battery. Force a full recalibration: discharge the tablet completely until it shuts off on its own, then charge it in one uninterrupted session to 100%. After that single cycle the IC rewrites its calibration against the new cell and the percentage display stabilises.