Braven Stryde 360 Replacement Battery 3.7V 6800mAh

Braven Stryde 360 — 3.7V Li-ion Replacement Battery (180017)

This is a 3.7V 6800mAh Li-ion replacement battery for the Braven Stryde 360 portable Bluetooth speaker. It slots into the Stryde 360's internal battery bay and restores power to the amplifier, Bluetooth radio, and USB charging output. Capacity is sourced from product data at 25.16Wh.

• Stryde 360 power rail: The Stryde 360 runs its Class D amplifier and Bluetooth 4.0 radio off a single 3.7V cell. Both draw from the same rail simultaneously at high volume, so the replacement cell must match the OEM discharge curve — a mismatched cell causes voltage sag under combined load that the original never showed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Stryde 360 board. The onboard BMS accepted the cell without fault flags, balanced the charge termination at 4.2V, and cut off cleanly at the low-voltage threshold under amplifier load.
• Fuel gauge recalibration after install: After fitting this cell, run the Stryde 360 down to auto-shutoff once before recharging. The speaker's fuel gauge is calibrated to the cell's full discharge range — skipping this step causes the indicator to read full while the actual capacity is still being mapped.

Why the Stryde 360 goes silent at high volume before the battery indicator drops

At maximum volume, the Stryde 360's amplifier pulls significantly more current than at moderate levels. If the cell has aged or is partially discharged, this sudden current spike causes the cell voltage to sag below the BMS cutoff threshold momentarily. The speaker interprets this as a low-voltage fault and shuts the output stage down, even though the indicator still shows charge remaining. Fitting a fresh 6800mAh cell restores the headroom needed to handle peak amplifier draw without tripping the cutoff.

Speaker won't wake from USB charge after sitting unused for several weeks

Li-ion cells left without a charge bleed down through natural self-discharge. If the Stryde 360 sits long enough, the cell voltage drops below approximately 2.5V — the point where the USB charging circuit refuses to initiate, because the BMS blocks charge input to protect the cell. Plugging in and seeing no charge indicator at all is the sign. Use a Li-ion recovery charger to bring the cell back above 3.0V first, or replace the cell if it won't recover above that threshold within 15 minutes of trickle input.