JBL Flip 7 F7A Replacement Battery 3.7V 4500mAh

JBL Flip 7 — 3.7V Li-ion Replacement Battery (GSP-1S1P-F7A)

This is a 3.7V 4500mAh (16.65Wh) Li-ion replacement battery for the JBL Flip 7 portable Bluetooth speaker (model F7A / Flip7G). It replaces OEM part GSP-1S1P-F7A and I0314A. If your Flip 7 no longer holds charge or shuts off during playback, this swap restores full cell capacity.

• F7A, Flip 7, and Flip7G compatibility: All three model designations use the same internal chassis, connector pinout, and BMS handshake protocol — one cell fits across the entire Flip 7 generation without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Flip 7 unit. The BMS accepted the pack without fault flags, and protection circuits triggered correctly at both the high and low voltage cutoff thresholds.
• Flip 7 charge cycle tip: Let the speaker drop below 20% at least once a month before plugging in. The Flip 7 is commonly left on a desk topping off constantly — that pattern causes fuel gauge drift and accelerates cell capacity fade faster than normal discharge cycles would.

Bluetooth dropping at high volume on the Flip 7

At maximum volume, the Flip 7's amplifier draws a large current spike on top of the continuous Bluetooth radio draw. If the cell has aged or sits at a mid-range state of charge, this combined load causes a momentary voltage sag. The BMS reads that sag as an undervoltage event and throttles output — the radio is first to drop. Keeping the cell above 40% charge during high-volume sessions reduces sag and keeps the connection stable.

Flip 7 won't wake from USB-C after sitting discharged for weeks

Li-ion cells that sit fully discharged for extended periods drop below the USB-C Power Delivery minimum acceptance voltage — typically around 2.5V per cell. At that point the Flip 7's charge controller will not initiate a charging handshake and the speaker appears completely dead. Connect it to a USB-C charger rated at least 10W and leave it untouched for 20–30 minutes — the BMS uses a trickle pre-charge phase to recover the cell voltage to a level where normal charging resumes. If the indicator light never appears after 45 minutes, the original cell has likely gone below the recovery threshold and replacement is the next step.