About this replacement
Cattron Theimeg LRC-S — 4.8V Ni-MH Replacement Battery (1BAT-8368-A001)
This is a 4.8V, 2000mAh Ni-MH replacement battery for the Cattron Theimeg LRC-S wireless crane and hoist remote control. It replaces OEM part numbers 1BAT-8368-A001 and 1BAT-8368-A001.D. The battery restores full transmit function to LRC-S remotes used in warehouse, construction, and industrial lifting operations.
- LRC-S and Laird LRC-S compatibility: Both variants use the same 4.8V four-cell NiMH pack with identical connector pinout and BMS handshake. The same physical form factor and terminal arrangement means one part number covers both remote variants without modification.
- Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the LRC-S platform. The BMS accepted charge normally, cell balance held across all four cells, and the remote transmitted without dropout under repeated solenoid activation loads.
- First-use charge requirement for crane remotes: Crane remotes often sit on shelves or in site stores for weeks before use. Ship and storage voltage on Ni-MH cells is typically around 1.0–1.1V per cell. Charge the battery fully before first deployment — do not install and operate directly from the packaging.
Solenoid activation causing power dropout on the LRC-S
When a crane or hoist solenoid fires, the inrush current demand spikes sharply for a fraction of a second. If the battery is partially discharged or at low capacity, the internal resistance rises enough that the voltage sags below the LRC-S's operating threshold during that spike. The remote interprets this as a power loss and either resets or drops the control signal. A fully charged, full-capacity 2000mAh pack keeps internal resistance low enough to absorb the inrush without sagging.
Remote showing low battery indicator immediately after new pack install
This happens when a fresh Ni-MH battery is installed directly from storage without charging first. Storage voltage on a Ni-MH cell sits around 1.0–1.1V per cell — well below the 1.2V nominal that the LRC-S expects under load. The remote reads the resting pack voltage, flags it as depleted, and may refuse to arm. Connect the battery to the OEM charger for a full charge cycle before installing — resting voltage should reach approximately 1.35–1.40V per cell before use.