About this replacement
Invacare Lifter Robin Type 1493139 — 24V Ni-MH Replacement Battery (20HHR-260SCP)
This is a 24V 2000mAh Ni-MH replacement battery for the Invacare Lifter Robin Type 1493139 patient lift. It powers the electric motor that drives the lifting mechanism during patient transfers. Fits the 1493139 model directly using OEM part number 20HHR-260SCP.
- Lifter Robin 1493139 platform fit: The 1493139 series runs a 24V motor rail with a BMS handshake tuned to Ni-MH discharge curves. Substituting a different chemistry breaks that handshake and triggers a false fault. This cell matches the voltage, chemistry, and connector required by the lift's control board.
- Bench tested on actual hardware: We cycled this battery through full charge and load discharge on the 1493139 platform. The BMS accepted the cell, completed its verification sequence, and held voltage under motor-start load without tripping a cutoff event.
- Post-installation self-test protocol: After fitting this battery, let the lift complete its full power-on self-test without interrupting the sequence. The 1493139 runs a BMS verification at startup — cutting power mid-cycle writes a fault flag that persists until the next clean reboot, not until the next charge.
Why the Lifter Robin 1493139 alarms low battery immediately after a confirmed full charge
The 1493139's charge IC applies a conservative capacity threshold on first contact with a new Ni-MH cell. Until the BMS logs one complete charge-discharge cycle, it treats the cell as unverified and flags capacity as insufficient even when the cell is physically full. This is a learn-cycle gate, not a fault. Run one full charge-discharge cycle before clinical use and the alarm clears on subsequent charges.
Lifter Robin 1493139 not powering on after the battery sat in storage
Ni-MH cells self-discharge at roughly 1–2% per day. A cell stored for several months can drop below 18V — the minimum threshold the 1493139's BMS needs to initialise. At that voltage, the control board sees no valid power source and will not attempt a boot. Connect the charger and hold for a full charge cycle before pressing power. If the charger does not recognise the cell either, check terminal voltage with a multimeter — a reading below 16V means the cell has passed the BMS recovery floor and the battery requires replacement rather than recovery charging.