Harman/Kardon Citation 200 Replacement Battery 3.7V 5200mAh

Harman/Kardon Citation 200 — 3.7V Li-ion Replacement Battery (IAA031NA)

This is a 3.7V, 5200mAh Li-ion cell replacement for the Harman/Kardon Citation 200 portable Bluetooth speaker. It fits directly in place of the OEM IAA031NA pack. Voltage and capacity match the original spec so the speaker's onboard power management reads the cell correctly from first charge.

• Citation 200 fit: The Citation 200 runs a single-cell 3.7V architecture with a dedicated fuel gauge IC that tracks charge state through coulomb counting. This replacement cell matches the voltage window and physical footprint the BMS expects — connector pinout and cell dimensions (71.60 × 38.45 × 20.00mm) are retained from the original pack.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Citation 200 unit, confirming the BMS accepted the pack without fault flags, the fuel gauge reported accurately across the full state-of-charge range, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• Monthly full-discharge cycle: The Citation 200 is typically used as a desk or room speaker and gets topped off constantly without ever running low. Let the battery drain below 20% at least once a month before recharging — shallow cycling without a full discharge causes fuel gauge drift and accelerates capacity fade on this cell chemistry.

Audio distorting before the battery indicator reaches empty on the Citation 200

As a Li-ion cell ages, its internal resistance rises. Under the combined current draw of the amplifier and the Bluetooth radio, terminal voltage sags faster than the fuel gauge anticipates. The amplifier clips before the cell is actually depleted, producing audible distortion even though the battery indicator still shows charge remaining. Replacing the cell with a fresh 5200mAh pack restores the voltage headroom the amplifier needs to drive clean output at the cell's rated 3.7V nominal.

Citation 200 won't wake from USB-C after sitting unused for weeks

Li-ion cells self-discharge during storage, and the Citation 200 has no deep-sleep trickle circuit to prevent the cell from dropping below the USB-C PD minimum acceptance voltage. If the cell falls below roughly 2.5V, the charger handshake fails and the speaker appears completely dead. Connect the speaker to a USB-C source rated at 5V/2A and leave it for 20–30 minutes without expecting any indicator response — the BMS requires a slow pre-charge phase to recover the cell to a voltage where normal charging can resume.