GoGroove SonaWAVE 3.7V 1200mAh Replacement Battery Li-ion

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

This 3.7V 1200mAh Li-ion cell replaces the internal battery in the GOGROOVE SonaWAVE Portable Bluetooth Speaker. It fits the compact SonaWAVE form factor and restores wireless audio playback when the original cell no longer holds a charge. Dimensions are 53.00 × 33.90 × 5.70mm — confirm these against your existing cell before installing.

• SonaWAVE platform fit: The SonaWAVE runs a single-cell 3.7V Li-ion pack at low continuous draw. This replacement matches that voltage rail and physical footprint, so the onboard charge controller sees no mismatch during charge cycles.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a controlled 3.7V Li-ion test rig. The BMS held cutoff at the correct thresholds — no false trip on charge entry, no premature low-voltage shutoff at the discharge floor.
• First-cycle charge tip for the SonaWAVE: After installation, let the speaker discharge fully on playback before plugging in. The SonaWAVE's charge IC needs one complete cycle to map the new cell's actual capacity curve — skipping this can cause the indicator LED to misread charge state on subsequent sessions.

Why the SonaWAVE charge LED stays solid green but playback cuts out within minutes

The SonaWAVE's charge controller reads cell voltage at rest, not under load. An aged or deeply discharged cell can sit at 3.7V with no current draw and appear full. The moment the audio amplifier pulls current, voltage collapses below the BMS protection floor and the speaker shuts down. This is a cell impedance problem, not a charging circuit fault. A fresh 1200mAh cell with low internal resistance sustains voltage through amplifier load spikes and keeps the controller satisfied.

Speaker won't power on after sitting unused for several months

Li-ion cells self-discharge at roughly 2–3% per month. Left long enough, the SonaWAVE's cell drops below 2.5V — the threshold where most BMS circuits lock out to prevent cell damage. When that happens, plugging in the USB charger produces no LED response and no startup. Connect the speaker to a 5V USB source and leave it for 30–60 minutes without pressing anything; some BMS circuits include a trickle recovery path that will slowly bring the cell back above 2.8V before allowing normal charge. If the LED still doesn't respond after that, the original cell has entered an unrecoverable deep discharge state and replacement is the correct next step.