Question about Jet 3 Ultra Power Chair

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Will not charge. amp meter does not move. has current all over the chair when pluged into ac

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  • midwaypines Nov 09, 2010

    when charger connected voltmeter reads 53 volts



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Midway if you hava power when the charger is plugged in and you aren't getting anything when unplugged I would say you have a battery problem. If you have or can get ahold of a digital voltmeter set it to 200 volts dc and plug the leads into the two outter plug holes in the charger port located under the front of the joystick. Without the charger plugged in you will read the battery voltage. It should be 24-27+ volts fully charged. Now plug in the on-board charger and you should read 27-34 volts indicating the charger is working. Hope this helps

Posted on Nov 09, 2010


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you will need a off-board charger to charge the chair Strege Mobility

I’m happy to assist further over the phone at

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The batteries will not charge. The ammeter does not move,just stays at 0 all the time. I pulled the connectors off the ammeter and there is 24 volts going to the ammeter.Not sure if the meter is bad or the...

It is an AMP Meter (Amperes) and AMP's are relative to CURRENT, not Voltage. Voltage measurements are read by a VOLT Meter. W=Watts or work units. Like a 40 Watt Bulb. R=Resistance. If the Battery fails to charge, it is due to the cells degradation as they only last so long. From what you wrote, I assume you need to replace the Battery.

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When I plug in my Jet 3 Ultra 4500, it seems to charge - the charging lights come on - but it never charges. In fact, I can't get it to move at all, even when plugged in. I think I am using the...

when you plug in the charger do you get any amp reading on the meter located at the rear of the chair near where the charger cord plugs into the chair. When you plug in the cord the meter should deflect and read 6 amps or so. If you aren't getting any deflection of the amp meter then either the batteries are dead or the charger is bad. If you have a voltmeter you can set it to 200 volts dc and plug the leads into the charger port located under the front of the joystick Plug the leads into the 2 outter holes of the port with the charger plugged into the wall you should be reading 27-30 volts. Unplug the charger and you will be reading the battery voltage and fully charged they should read 25-27+ volts. If you aren't reading 25-27 volts without the charger plugged in you will need new batteries( anything less than 10 volts will not let the chair turn on) if you aren't getting 27-30 volts with the charger plugged in then the charger is bad and you can get or borrow an off-board charger and charge the chair thru the joystick port Hope this helps

May 07, 2011 | Jet 3 Ultra Power Chair

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How do I know if my jet 3 ultra is charging? I just bought a used one today and do not have a manual

The chair should have a meter on the rear panel where the 9 pin connector for the joystick plugs into the chair when you plug in the charger cord the meter should move up and the lights on the joystick should flash indicating the charger is plugged in. When the chair is fully charged the meter should read zero or bounce up and down. Hope this helps

Feb 02, 2011 | Jet 3 Ultra Power Chair

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Do not know if chair is taking a charge lights just keep moving across armrest .how do u tell when fully charged?

hi let me see if i can help ,

When the lights go back and forth on your joystick that means the chair knows its pluged in .Now the chair itself has a built in charger that is mounted on the back of your chair .The back of the chair ,there is a opening a cutout in the frame .when you plug in your chair there will be a red light and a yellow ,yellow means the chair is charging, wait till it turns green,this means fully charged.When you plug in the chair youll see the lights through that hole.Look for the lights.

I recommend my customers to leave there chair charging over night look at the light it will be green when you turn the chair on the joystick should show fully charge.

Good luck hope i was of some help.

Jan 20, 2011 | Invacare Supply Group Invacare Pronto M51...

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When i plug my chair in using the onboard charger, my meter will not move, I have juice going into the charger but nothing comes out.

Then you must have a charger problem. If you have a digital voltmeter or access to one. Set it to 200 volts dc and plug the leads into the two outter holes of the charger port located under the front of the joystick. Without the charger plugged in you will be reading the current voltage of the batteries. Now plug the charger cord into the wall socket and the reading on the meter should go up to 26-30 volts. if it doesn't change the reading after a few minutes then the charger is bad. Now you can get an off-board charger for your chair somewhat cheaper than an on-board charger. If you have a friend or neighbor that has a chair or scooter with an off-board charger you can borrow it for a few hours to charge your chair until you can get a charger of your own. Check on e-bay for any good 4 amp charger for a power chair it would work fine to charge your chair. Hope this helps you

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Haven't used the chair for about a year and it has rarely been used. Now I want to let someone else use it and the batteries are taking a long time to charge. Is this normal for the description mentioned...

Hi. If the machine has been sitting around for a while mot being used, then your batteries have, what is known as, sulphated up. The plates in the battery have grown a layer of lead sulphate on them.
Sometimes repeated charging and discharging ( going for a ride on the machine ), will help the batteries regain some condition. Batteries do not like sitting around, without being used.
Charging overnight should charge the batteries, if they are able to be charged.
The meter you mentioned, I take it, it is on the charger? I will be measuring the current ( amps ), going into the batteries.
The best answer, but also the most expensive, is to buy new batteries.
Good luck. Neil.

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Batteries won't charge w/ on board charger-+

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