Braven Stryde 360 Replacement Battery 3.7V 5200mAh

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

This is a 3.7V 5200mAh Li-ion cell replacement for the Braven Stryde 360 portable Bluetooth speaker. It fits the Stryde 360 only — match OEM part number 180017 before ordering. Capacity figure is taken from product data at 19.24Wh.

• Stryde 360 platform fit: The Stryde 360 runs a single-cell Li-ion pack at 3.7V nominal, feeding both the amplifier board and the Bluetooth radio from one shared rail. This replacement cell matches that voltage rail and uses the same connector footprint as the OEM pack, so the BMS handshake between the speaker's charge IC and the protection circuit completes without error codes.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Stryde 360 board. The BMS protection circuit triggered correctly at the low-voltage cutoff, and the charge IC accepted the cell without flagging a fault. No thermal events occurred during a full charge cycle.
• Fuel gauge reset after swap: After fitting a new cell, run the Stryde 360 down to the low-battery warning before charging it fully — do this once. Skipping this step leaves the fuel gauge calibrated to the old cell's wear curve, so the indicator will misreport remaining charge from day one.

Why the Stryde 360 audio distorts before the battery indicator reaches empty

As the Li-ion cell discharges past roughly 3.5V, internal resistance rises. The amplifier board pulls short, high-current bursts on bass transients, and the voltage rail sags briefly below what the amp needs to swing cleanly. The result is clipping distortion even though the indicator still shows charge remaining. This is a cell-condition symptom, not a speaker fault — a fresh cell with lower internal resistance keeps the rail stable through the same audio load. If you're hearing distortion at moderate volume with a battery that's more than two years old, the cell is the cause.

Stryde 360 won't accept a USB charge after sitting unused for months

Li-ion cells left discharged for extended periods drop below the minimum acceptance voltage that the charge IC will recognise — typically under 2.5V. The Stryde 360's charge controller sees a cell below its intake threshold and does not begin charging, so the USB port appears dead. Some charge ICs include a trickle pre-charge mode that slowly recovers a deeply discharged cell; connect the speaker to USB and leave it undisturbed for 30–60 minutes before concluding the port or cell has failed. If the cell does not recover to 3.0V within that window, replacement is the correct next step.