About this replacement
Cattron Theimeg LRC Series — 4.8V Ni-MH Replacement Battery (1BAT-7706-A201)
This 4.8V, 2000mAh Ni-MH battery replaces the original power cell in Cattron Theimeg LRC, LRC-L, LRC-M, and LRC-Mund wireless crane remote controls. It matches OEM part numbers 1BAT-7706-A201, BE023-00122, 1BAT-7706-A101.E, 1BAT-7706-A101-G, and BE023-00075. Physical dimensions are 79.20 × 61.90 × 33.20 mm — confirm fit before installing.
- LRC platform compatibility: The LRC, LRC-L, LRC-M, and LRC-Mund share the same 4.8V battery bay, connector pinout, and charge circuit. One cell swap covers all four variants without modification.
- Bench tested on actual hardware: We ran this cell through charge/discharge cycles on the LRC platform. The Ni-MH chemistry accepted full charge without thermal event, and the remote's low-battery indicator cleared at expected voltage thresholds.
- Storage charge before deployment: Ni-MH cells ship at partial charge. If this remote sits in a toolbox or charging dock between crane shifts, charge the battery fully before putting the remote back into active service — Ni-MH cells left partially discharged for weeks develop voltage depression that reduces usable capacity.
Solenoid activation causing power dropout on a freshly installed battery
When the LRC remote triggers a crane solenoid or contactor, the inrush current spike briefly pulls the battery voltage down. If the cell is not fully charged, that voltage sag can cross the remote's undervoltage cutoff threshold, causing the transmitter to drop out mid-command. This is not a faulty battery — it is a capacity issue. Charge the replacement cell to 5.6–5.8V (fully charged Ni-MH nominal for a 4-cell pack) before the first operational use. A full charge gives the cell the headroom to absorb the inrush event without tripping the remote's protection circuit.
Remote showing "low battery" immediately after new cell install
Ni-MH cells leave the warehouse at storage voltage, typically 4.2–4.5V for a 4-cell pack — below the threshold the LRC firmware uses to clear the low-battery flag. The remote reads that as a depleted cell, not a new one. This is expected behaviour, not a defective battery. Connect the remote to its OEM charger and run a full charge cycle. Once pack voltage reaches approximately 5.6V, the indicator will clear and the remote will operate normally.