Jabra Solemate AHB723938 Replacement Battery 3.7V 1000mAh

Jabra Solemate / HFS200 — 3.7V Li-Polymer Replacement Battery (AHB723938)

This is a 3.7V, 1000mAh Li-Polymer replacement battery for the Jabra Solemate and HFS200 portable Bluetooth speaker. It matches the OEM part number AHB723938 and fits the original battery cavity. When the factory cell degrades and playtime shortens noticeably, this swap restores full wireless audio operation.

• Solemate and HFS200 compatibility: Both models share the same 3.7V battery rail, AHB723938 part number, and connector pinout. The BMS handshake is identical across both — no firmware mismatch or charge-controller conflict when fitting this cell.
• Bench tested on actual hardware: We ran this cell through charge cycles on the Solemate platform and confirmed the BMS accepted the pack without flagging a fault, held voltage through combined amplifier and Bluetooth radio draw, and completed a full charge cycle without thermal event.
• Monthly discharge cycle for Solemate users: If the speaker sits on a desk and gets topped off constantly, discharge it below 20% at least once a month before recharging. Without a periodic full discharge, the fuel gauge drifts and the cell develops shallow-cycle capacity fade faster than normal use.

Audio distorting before the battery indicator reaches empty

This happens when the amplifier draws a current spike that the degraded cell cannot sustain without voltage sag. The amp clips before the battery meter registers low because the cell's internal resistance has risen — the terminal voltage drops under load even though resting voltage looks fine. A new 1000mAh Li-Polymer cell with lower internal resistance holds the voltage rail steady under amplifier demand. After fitting this replacement, check that resting voltage reads at or above 3.7V before the first charge cycle.

Solemate not waking from USB charge after sitting unused for weeks

A deeply discharged Li-Polymer cell can drop below the USB charge controller's minimum acceptance voltage — typically around 2.5V — and the charger will not initiate a charge cycle. The speaker appears completely dead even with a cable connected. Some cells recover with a low-current pre-charge trickle; if the USB port shows no activity after 30 minutes, try a different charger rated at 5V/1A to see if it triggers the pre-charge stage. If the cell reads below 2.5V on a multimeter and the charger still will not engage, the original battery is below recovery threshold and replacement is the correct next step.