BLU TouchBook 7.0 3G C1136903300L Replacement Battery 3.7V 3000mAh

BLU TouchBook 7.0 3G — 3.7V Li-Polymer Replacement Battery (C1136903300L)

This is a 3.7V, 3000mAh Li-Polymer replacement battery for the BLU TouchBook 7.0 3G tablet. It fits the P200 and P200L models using OEM part number C1136903300L. Swap it in when the original cell no longer holds a charge or the tablet shuts down unexpectedly under normal use.

• TouchBook P200 / P200L platform fit: These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The C1136903300L part number covers all variants in this line — P200, P200L, and the Touch Book 7 3G.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a P200-class board. The BMS accepted the new cell without error, charge current ramped normally, and protection cutoffs triggered at expected voltage thresholds.
• Post-swap fuel gauge reset: Android's fuel gauge IC stays calibrated to the old cell after a swap. Run one full discharge to automatic shutoff, then charge uninterrupted to 100% without interruption. That single cycle resets the IC against the new cell's actual capacity curve and clears the inaccurate percentage readings that appear right after installation.

Tablet shutting down at 15–25% remaining on the BLU TouchBook

This happens when the display backlight and WiFi radio draw simultaneously, creating a combined current spike the fuel gauge misreads as a voltage cliff. The BMS interprets the momentary sag as a critically low cell and trips the protection circuit before the battery is actually empty. It is not a fault in the replacement cell — it is a calibration mismatch. Run one complete discharge-to-shutoff cycle followed by a full uninterrupted charge, and the fuel gauge will map the new cell's actual voltage curve correctly.

BLU TouchBook percentage dropping faster than expected from 100%

A fast early drop — say, from 100% to 80% within minutes of unplugging — points to fuel gauge drift, not cell capacity loss. The IC was calibrated to the worn original cell and is misreporting the new cell's state of charge. The fix is the same recalibration cycle: drain the tablet to automatic shutoff under normal use, then charge straight to 100% without interrupting the cycle. After that single pass, reported percentage should track actual capacity within a few percent.