Philips PRESTIGO SRT9320 Remote Compatible Battery 3.7V 850mAh

Philips PRESTIGO SRT9320 — 3.7V Li-Polymer Replacement Battery (242252600214)

This 3.7V, 850mAh Li-Polymer battery replaces the internal rechargeable cell in the Philips PRESTIGO SRT9320 universal remote control. It fits the SRT9320, SRT9320/10, and associated model variants including 2577744 and 2669577. When the original cell no longer holds a charge, this is the direct replacement using OEM part number 242252600214.

• SRT9320 series fit: These PRESTIGO variants share the same internal battery bay dimensions, connector orientation, and 3.7V supply requirement. The BMS on the remote accepts the same charge termination profile as the original cell — no firmware mismatch or handshake failure observed during testing.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the SRT9320 platform. The BMS accepted charge without error, IR LED output returned to full strength, and there was no voltage sag under repeated multi-device command bursts.
• Li-Polymer cell handling for PRESTIGO remotes: The SRT9320 uses a flat pouch cell seated under a pressure plate. Do not force the connector — align the JST-style plug squarely before pressing it down. A cocked connector causes intermittent contact, which the remote reports as a dead battery even when the cell is fully charged.

Why the SRT9320 stops responding after a battery swap

The PRESTIGO SRT9320 runs a soft-start check when power is restored after a battery change. If the cell voltage reads below 3.4V — which can happen if the replacement has been sitting in storage — the remote's microcontroller may not boot fully, leaving it unresponsive. This is not a faulty battery. Connect the remote to its charger for 15–20 minutes before testing IR output. A cell that boots the remote at 3.4V will charge normally to 4.2V from there.

PRESTIGO remote needing to be held closer to the TV than before

The IR LED in the SRT9320 draws a short burst of higher current each time a button is pressed. When the cell voltage drops below roughly 3.5V, that current burst falls short of the LED's full output threshold, and the signal weakens noticeably. The remote still appears to work — it responds at close range — but it fails across a normal living room distance. Replacing the battery and charging it fully before use restores full IR output range.