One For All Xsight Touch SN03043TF Replacement Battery 3.7V 1000mAh

One For All Xsight Touch / URC 8603 — 3.7V Li-ion Replacement Battery (SN03043TF)

This is a 3.7V 1000mAh Li-ion replacement battery for the One For All Xsight Touch universal remote. It fits the URC 8603, ARRX18G, and URC 11-8603 models using OEM part number SN03043TF. When the original cell degrades, this swap restores full touchscreen and IR control of TVs, set-top boxes, and connected devices.

• Xsight Touch / URC 8603 platform fit: These models share the same internal battery bay, connector pinout, and 3.7V single-cell Li-ion power rail. One battery spec covers the full group — no adapter or wiring change needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the SN03043TF circuit. The protection IC responded correctly to over-discharge cutoff, and charge acceptance matched the original cell's profile without BMS faults.
• Li-ion handling for touch remotes: The Xsight Touch uses a touchscreen that draws more standby current than a standard button remote. If the remote sits unused for several weeks, voltage can drop enough to trigger the protection circuit. Recharge before storage if you won't use it for more than three weeks.

Why the Xsight Touch touchscreen becomes unresponsive before the battery fully reads empty

The touchscreen controller in the Xsight Touch has a higher minimum operating voltage than the IR transmitter. As the cell ages and internal resistance rises, voltage sags under the brief current draw of a screen tap — even if the battery indicator still shows charge. The processor cuts the touch layer to protect itself, but the remote appears to still have power. Replacing the cell restores stable voltage under load and brings the touchscreen back online.

Remote does nothing after battery swap — no LED flash, no response

A completely dead response after fitting the new cell is almost always a polarity error. The SN03043TF uses a JST-style connector, but it's worth checking that the positive terminal aligns with the marked pad on the PCB before assuming a fault. If the connector is seated correctly and there's still no response, the cell may have shipped in a low-voltage state — connect it to charge for at least 20 minutes before testing again. The protection circuit won't allow output below 2.5V, so a deeply discharged new cell will appear dead until it accepts a charge.