BLU Dash XL C885441230L Replacement Battery 3.8V 1900mAh

BLU Dash XL / D710L / D710U — 3.8V Li-ion Replacement Battery (C885441230L)

This is a 3.8V, 1900mAh Li-ion cell built to fit the BLU Dash XL, D710L, and D710U smartphones. It replaces part number C885441230L when the original cell can no longer hold a charge or fails to power the phone. Voltage and capacity match OEM spec exactly.

• Dash XL / D710L / D710U compatibility: All three model numbers share the same 3.8V rail, connector pinout, and BMS handshake protocol — one cell covers the entire variant group without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Dash XL platform. The BMS accepted the cell without fault codes, and the charge IC cycled cleanly through CC/CV phases on each pass.
• Fuel gauge recalibration on first use: After installing a new cell, disable fast charging and run one full discharge down to auto-shutoff, then charge uninterrupted to 100%. This gives the fuel gauge IC one complete reference cycle against the new cell's discharge curve before high-current charging begins on an uncalibrated cell.

Sudden shutdown at 20–30% on the Dash XL after a cell swap

This is a voltage cliff problem, not a capacity problem. Under screen-on or modem load, the cell voltage drops faster than the fuel gauge predicts — the phone hits the low-voltage cutoff threshold while the OS still shows charge remaining. The fuel gauge IC is still calibrated to the old cell's discharge curve. One full discharge-to-shutoff cycle followed by an uninterrupted charge resets the coulomb counter reference and typically eliminates the early cutoff.

Phone does not power on after the replacement cell sat in storage

Li-ion cells in storage self-discharge slowly. If the cell drops below roughly 2.5V, the BMS enters a lockout state and blocks charging current to prevent damage to a deeply discharged cell. The phone will show no charging indicator and will not boot. Connect to a wall charger — not a USB port — and leave it for 15–20 minutes without pressing the power button. The charge IC will trickle current into the cell until it clears the BMS unlock threshold, after which normal charging resumes.