URC MX-3000 Replacement Battery 3.7V 2100mAh Li-Polymer BTPC56067A

URC MX-3000 / MX-3000i — 3.7V Li-Polymer Replacement Battery (BTPC56067A)

This 3.7V, 2100mAh lithium-polymer battery replaces the internal rechargeable cell in the URC MX-3000 and MX-3000i programmable remote controls. It matches OEM part numbers BTPC56067A, PC046067H, BTPC56067, RLP-008-2.1, and BTPC56067B. When the original cell loses capacity, IR output drops and the remote starts missing commands — swapping this cell restores consistent signal strength.

• MX-3000 and MX-3000i compatibility: Both models run on the same internal battery bay, voltage rail, and connector pinout. The BMS handshake is identical across the two variants, so one cell covers both units.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the MX-3000 platform. The BMS accepted the cell without fault flags, and IR output held at expected signal strength across the test range.
• Connector seating on the MX-3000: The flat flex connector on this cell has a retention clip that must click fully into the board socket. A half-seated connector causes intermittent power loss that looks like a dead battery — press until you hear the click before closing the case.

Why the MX-3000 starts dropping commands before the battery reads as low

Li-polymer cells in remotes lose usable voltage headroom before the BMS triggers a low-battery warning. The MX-3000's IR LED requires a stable voltage spike for each burst — as the cell ages and internal resistance climbs, that spike flattens. The remote still powers on and the screen may show full charge, but the IR signal weakens enough that the TV or receiver misses commands intermittently. Replacing the cell at the first sign of missed commands — not when the remote dies — avoids the deeper discharge cycles that accelerate cell degradation.

MX-3000 powers on but IR output won't reach the device

Short IR range after a battery swap usually means the cell voltage is sitting below 3.5V — either from a partially discharged replacement or a shipping discharge. Plug the remote into charge before use and let it reach a full charge cycle. If range stays short after a full charge, check the connector seating at the board socket; a loose contact limits current draw to the IR LED array. Confirm charge voltage at the USB port reads above 4.1V before troubleshooting further.