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Mend Parker Knoll 9 Volt Battery

9 volt battery?

A parker knoll mains motorised lifting chair has stopped working. What is the purpose of the 9 volt battery under the chair. Is it to power the hand held up/down control unit?

Jim Neill
October 2011
Please see the following answer regarding the 9 volt battery. To address the non-operating chair itself - generally, there are three main assemblies that make a lift recliner work (aside from the mechanism). They are : the hand wand (hand control), the lift motor assembly, and the transformer (discussed below). If any of these or the wiring that connects them has failed or are damaged, that would stop the lift recliner from functioning. If your chair is stopped either fully up or fully down, your problem is likely the hand control. If the chair stopped functioning one day to the next, the culprit could be the transformer (if you hear no sound AT ALL when you push the hand control button(s). If you hear a faint "click" from underneath the chair when pushing the hand control button(s)and the chair does not move at all, the lift motor assembly may be the problem. These parts are not user-servicable (for most) and would require replacement. The best course of action to begin would be to contact the dealer or manufacturer and describe the circumstances surrounding the failure. That is always how I begin.

26 year reclinerman
October 2011
Most lift recliners built in the last 8-10+ years operate on low (24 volts) voltage for safety and use a transformer (the black box that is either attached to the chair frame, attached next to the motor assembly or sitting separately on the floor - apart from the chair - attached with an electrical cord ) to "step down" the voltage from the wall plug. In this case, the 9 volt battery (some use two) comes into play only when the main power source fails. In that instance, the chair can be operated on that battery's power to allow the user to get up from the chair even when the house power is out (bear in mind that the battery(s) must be fresh and that the chair will move VERY slowly due to the lower voltage applied to the motor). After a power outage and use such as this, the battery(s) should be changed - the current draw will not allow a 9 volt to do this job more than once or twice.

26 year reclinerman
October 2011

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