GoGroove SonaWAVE Portable Speaker Compatible Battery 3.7V 1000mAh

GOGROOVE SonaWAVE Portable Speaker — 3.7V Li-ion Replacement Battery

This 3.7V 1000mAh Li-ion cell replaces the internal battery in the GOGROOVE SonaWAVE Portable Bluetooth Speaker. It restores wireless audio playback when the original cell has degraded or failed. Dimensions are 53.00 × 33.90 × 5.70mm — measure your existing cell before ordering.

• SonaWAVE platform fit: The SonaWAVE uses a single 3.7V Li-ion cell running the Bluetooth audio module, amplifier rail, and charge management IC from one shared bus. Voltage and physical footprint must match exactly — this cell meets both.
• Bench tested on actual hardware: We cycled this cell through the speaker's onboard charge IC and confirmed the BMS accepted charge input without fault flags. Discharge under continuous Bluetooth audio load held stable voltage through the mid-range curve with no premature cutoff.
• First-cycle calibration on the SonaWAVE: After installation, run one full discharge-to-cutoff followed by a complete charge before normal use. The onboard fuel gauge on compact Bluetooth speakers has no adaptive recalibration — it maps percentage directly to voltage, so a full reference cycle anchors the readout to the new cell's actual curve.

Why the SonaWAVE shuts off with battery percentage still showing

Compact Bluetooth speaker boards use a simple voltage-to-percentage lookup rather than a coulomb counter. When the cell ages and internal resistance climbs, the resting voltage looks healthy but collapses under the current draw of the amplifier and Bluetooth radio together. The BMS sees the voltage drop past its cutoff threshold and shuts the unit down — even if the display or indicator was showing charge remaining. A fresh cell with lower internal resistance holds voltage under that combined load, eliminating the premature cutoff.

Battery percentage stuck at 100% or jumping erratically after swap

The SonaWAVE's charge IC calibrates its percentage reference against the discharge curve of whichever cell it last completed a full cycle on. Installing a new cell without running a full reference cycle leaves the IC mapping voltage readings against the old cell's curve. The result is a readout that either stalls near full or skips in large steps as the voltage curve diverges from expectations. Fix this by discharging fully to auto-shutoff, then charging uninterrupted to 4.2V with no mid-cycle interruptions.