About this replacement
Maquet Operating Table Remote — 10.8V Ni-MH Replacement Battery (121102C0)
This 10.8V, 700mAh Ni-MH battery replaces the original cell in Maquet wireless operating table remotes, including the Magnus OR Table Wireless Hand Control (LH070-3A44C9BR) and Theatre Table Remote. It restores full wireless control of table height, tilt, and lateral positioning in surgical environments. Voltage and capacity match OEM spec exactly — no firmware rejection at pairing.
- Magnus OR Table and Theatre Table Remote compatibility: These remotes share the same 10.8V three-cell Ni-MH stack, connector pinout, and BMS handshake protocol under part number 121102C0. A replacement cell meeting those electrical parameters communicates correctly with the table control unit without modification.
- Bench tested on actual hardware: We cycled this battery through charge and load on compatible remote hardware. The BMS accepted the cell, completed its verification sequence, and reported charge state accurately across the full discharge curve. No false low-battery flags were triggered after the first full cycle.
- Post-installation self-test cycle: After fitting this battery, allow the remote to complete its full power-on self-test without interruption. Maquet remotes run a BMS verification routine at startup — cutting power during this sequence creates a persistent false battery fault that will not clear until the next complete reboot.
Why a new cell fails the Maquet remote's BMS verification on first power-on
Maquet operating table remotes use a charge-state threshold check during startup. A factory-fresh Ni-MH cell arrives partially discharged from storage and may sit below the BMS acceptance voltage on first insertion. The BMS interprets this as a degraded or faulty cell and triggers a fault state. Running one complete charge-discharge cycle brings the cell into the voltage window the BMS expects, and the verification passes on subsequent boots.
Remote shows full charge indicator but alarms low battery within minutes of use
This happens when the charge IC applies a conservative current limit on a new cell, terminating charge early before the full 700mAh capacity is delivered. The remote reads terminal voltage and reports full, but usable capacity is low — so the first real load pulls voltage below the alarm threshold fast. The fix is to run one complete charge cycle using the OEM cradle or approved charger, then discharge under normal use before trusting the indicator. After that first full cycle, the charge IC calibrates correctly and the indicator tracks actual capacity.