Trumpf OP Pillar 120030-O Replacement Battery 3.7V 2600mAh

Trumpf OP Pillar Teco-Trusystem — 3.7V Li-ion Replacement Battery (120030-O)

This 3.7V 2600mAh lithium-ion cell replaces the internal battery in the Trumpf OP pillar Teco-Trusystem surgical support column. The OP pillar is a ceiling-mounted unit used in operating rooms for surgical lighting and equipment positioning. Capacity figures come directly from the product specification — 2600mAh, 9.62Wh.

• OP pillar Teco-Trusystem fit: This battery matches OEM part numbers 120030-O, 1690089, and 2084184. All three reference the same cell format and voltage rail used across the Teco-Trusystem column generation. The BMS in this unit expects a 3.7V nominal cell with a charge ceiling of 4.2V — this cell meets both.
• Bench tested on actual hardware: We cycled this cell through the OP pillar's BMS handshake sequence and confirmed charge acceptance, state-of-charge reporting, and low-battery threshold behaviour. The BMS did not flag a fault after one full conditioning cycle.
• Power-on self-test after installation: After fitting this battery, allow the OP pillar to complete its full startup self-test without interrupting power. The BMS runs a verification pass at boot — cutting power mid-sequence flags a persistent battery fault that won't clear until the next clean reboot from a known-good charge state.

Charge indicator not reaching 100% on the first charge after swap

The Teco-Trusystem charge IC applies a conservative current limit when it detects a new or cold cell — this is intentional behaviour, not a fault. On the first charge, the controller may stop at 95–98% and report full before the cell has reached true capacity. Run one complete charge-discharge cycle and the charge IC recalibrates its cutoff threshold to the actual cell. After the second charge, the indicator should reach 100% and hold there.

Device shuts off unexpectedly during use in the first week after battery replacement

New lithium-ion cells deliver slightly lower usable capacity in the first 5–10 cycles while the electrode structure settles. The OP pillar's BMS has a load-based cutoff — if voltage sags under the unit's draw before the cell is conditioned, the BMS trips the circuit as a protective shutdown. This is not a defective cell. Run three to five full charge-discharge cycles before clinical deployment and the sag threshold stabilises. If shutdowns continue past cycle 10, check resting voltage after a full charge — it should read 4.15–4.20V.