Invacare Supply Group Invacare Pronto M91 Electric Wheelchair Logo
Posted on May 29, 2009

Wheelchair won't charge

I can't get my w/c battery to charge. It makes a clicking noise. The orange light blinks on & off 4 times underneath the chair then stays an a few seconds, then blinks again. The red light stays on. My wheelchair is a Pronto M91 Sure Step. It is not quite 1 1/2 yrs old.

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Anonymous

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  • Contributor 32 Answers
  • Posted on Jul 12, 2009
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Joined: Jul 12, 2009
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Sounds like bad batteries

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on May 13, 2009

SOURCE: How do I charge My Pronto M51 motorized wheelchair?

I also have a Pronto M51 and use it daily. I have found though by leaving the charger plugged in over a weekend, it reduces the battery range and does not come back to normal until I use it for a week and charge it nightly. You can overcharge the batteries because the charger does not shut off entirely. I have monitored this with my meter.

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Anonymous

  • 103 Answers
  • Posted on Nov 06, 2009

SOURCE: I have a inacare pronto m91 sure step. The SJ+

You have a remote, joystick, problem.

Anonymous

  • 177 Answers
  • Posted on May 28, 2010

SOURCE: manual for Pronto M51 wheelchair

Hi. We can supply, but try your local Invacare dealer. If you have luck, send us an email,
[email protected]

wcdoc1953

wcdoc1953

  • 280 Answers
  • Posted on Feb 13, 2011

SOURCE: Had the Pronto M91 invacare wheelchair in the Push

You definitely need new batteries. After that amount of time the batteries go bad and the plates inside become sulfated. They are only good as boat anchors now.
It is a easy do it your self repair. There are 2, Group 22 batteries in this model. You want to get deep cycle sealed lead acid, preferably AGM (advanced glass matt) group 22 batteries.
Flip the seating system back by releasing the lever under the front of the seat.Make sure you do not pinch the joystick wiring at the back when you do this.
Remove the black plastic cover.
The batteries will be secured by a strap which you should unbuckle.
Disconnect the plugs to the batteries and note how they are run, oriented and connected.
Pull out the batteries, one at a time, from the base.
Make the wiring connections to the battery , put the batteries back in the chair, plug everything in and you are set to go. Hope this helps.

Anonymous

  • 692 Answers
  • Posted on Mar 17, 2011

SOURCE: I have a Pronto M91.

You have low batteries and need charging if you been charging and still get the red lights then the batteries need to be replaced and have the charger checked for correct output. If you have a voltmeter you can check the charger by plugging the on-board charger into the wall set the voltmeter to 200 volts dc and plug the leads into the two outter holes of the charger port located under the front of the joystick. with the charger pugged in you should be reading 27+volts if you aren't getting any reading or the reading is lower than 25 volts then replace the charger or get an offboard charger and try charging the batteries via the joystick charger port Hope this helps

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