AudioVox IHDP01A DAB Radio Replacement Battery 3.7V 900mAh

AudioVox IHDP01A Portable DAB/HD Radio — 3.7V Li-ion Replacement Battery (ICP463450A 1S1PMXZ)

This is a 3.7V 900mAh Li-ion replacement battery for the AudioVox IHDP01A portable DAB/HD radio receiver. It fits the IHDP01A and the IHDP01A Portable HD/FM Radio Player variant. OEM part number ICP463450A 1S1PMXZ.

• IHDP01A platform fit: Both IHDP01A variants run the same 3.7V single-cell architecture with a shared connector footprint and BMS handshake protocol. One battery covers both units without any modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the IHDP01A platform. The BMS accepted the cell without fault codes, and the protection circuit tripped correctly at the low-voltage threshold — no spurious cutoffs during the DAB decode cycle.
• Post-install scan tip: After fitting this battery, let the radio run a full automatic station scan before saving any favourites. DAB station lists are held in volatile memory and are wiped on power loss — skipping the scan leaves the preset list incomplete or empty.

Radio cutting out mid-station on the IHDP01A at low battery

The DAB decoder in the IHDP01A needs a stable voltage supply to process the OFDM signal stream. When cell voltage sags below roughly 3.4V under load, the decoder starts dropping packets before the battery indicator shows empty. That produces audio dropouts and full stream failures that look like reception problems but are actually voltage-related. A fresh cell at full charge eliminates this — the issue comes back only as the replacement approaches end-of-life.

Reception weaker than expected after fitting a replacement battery

The IHDP01A's RF front end draws more current when signal strength is low — the radio increases power to its tuner circuit while searching for a stable multiplex lock. If the replacement cell has internal resistance above the original spec, terminal voltage sags under that extra draw and the radio throttles RF output to protect itself. The result looks like poor antenna performance but is actually a cell-quality issue. Check that the battery rests at or above 3.7V off-load after a full charge cycle.