If the wireless remote battery dies, does the lever stay suspended in the air?
When the remote signal is lost, the motor returns to the safe center position within 250 ms and oil flow to that lever stops; lever movement stops and no uncontrolled motion occurs. Warnings are given before the battery dies: the HCT400 shows a visual warning when charge drops below 5%, and the HCT402 warns via LED and buzzer and refuses motion control entirely at critical level.
Battery depletion is not a sudden event; the system reports it in stages.
- Warning stage: on the HCT402, low battery is indicated by LED and audible alert. On the HCT400, a visual warning is given below 5%.
- Refusal stage: the HCT402 does not allow motion control at critical level. You are not left with half-powered, unpredictable control.
- Loss stage: if the signal disappears entirely, the 250 ms timeout takes effect, the motor returns to the safe center position and oil flow stops.
An important distinction: oil flow stopping means movement stops, not that the load has been made safe. What holds a suspended load is the hydraulic circuit's own load holding arrangement; the load holding valve must be mounted directly on the cylinder port. The kit does not intervene in the hydraulic circuit, so it neither improves nor worsens the existing load holding arrangement.
The practical precaution is simple: check the charge status at the start of the shift and keep the spare remote fully charged.
Full coverage of this topic: Connect Plus and Minus, Run: Installation That Does Not Depend on Technical Staff