Have a QM-710/715/720 wheelchair that has been stored for about 1 year and I cannot get the chair to charge. WHen charger is plugged in the green light flashes but when I plug into char it turns red.

Joe See my tips on charging batteries No you don't have to leave the chair on when charging. Charge overnite after using it during the day. Always have the charger off when plugging it into the chair and unplugging from the chair. The charger you have doesn't have an on/off switch so get a power strip with the on/off switch, plug that into the wall and plug your charger into the strip use the switch on the strip to turn the charger on and off this will save you having to plug and unplug the charger rom the wall. Always store or put the chair up fully charged. If you don't use the cair daily charge at least once a week. It takes 9-10 chargings to get the batteries operating at 100% so use the chair and charge overnight while you sleep Never leave the charger on the chair more than 12 hours Hope this helps you

Angel the charger light should only turn green when the chair is fully charged. If you know the chair isn't fully charged then there is a problem with the charging system. if the circuit board in the joystick got wet then that is a serious problem. If you have a voltmeter you can check the battery voltage thru the charging port located under the front of your joystick Set the meter to 200 volts dc and plug the leads into the 2 outter holes of the charger port. Fully charged you should read 27-30 volts if you aren't getting any reading then the batteries are completly dead or there is a problem with the charging circuit (the reason you are getting a green light on the charger) The joystick will have to be replaced sorry If Medicare paid for your chair then they will pay 80% of the repair costs to get your chair working again If they did contact Roadrunner Mobility @ 1-800-467-2668 to get it fixed thru Medicare Hope this helps

sounds like a charger inhibit problem. Whenever you charge your chair the charger inhibit shuts down the chair so it can't be moved while charging. If you are getting this then that function is not working. Lets try this if you know of someone who has a chair or scooter with an off-board charger see if you can borrow it. Plug the off-board charger into the charger port located under the front of the joystick (don't have the on-board charger plugged in) and then turn the charger on. turn the chair's power on and you hopefully will see the lights blinking again indicating a charger plugged in (charger inhibit) the lights on the charger should be red and yellow (yellow turning green when fully charged) If you still get the problem with the off-board charger then your problem is in the controller or power module and this requires a new one. If Medicare paid for your chair you can call Repair Xpress @ 1-877-81-3733 or Roadrunner Mobility @ 1-800-467-2668 to have them fix it for you and bill Medicare for most of the repair costs. Hope this helps you

Ed After a year the batteries are shot and the charger cannot revive them Sorry but you're gonna have to spring for 2 new U1 batteries. Hope this helps you

Carla Under the front bottom of the joystick you will see a charger port its a three pin port that accepts the plug from the charger. Always plug the charger into this port with the charger off or not plugged into the electircal socket. Then plug the charger into the electical socket or turn it on. You should see a red light and a yellow light on the charger. When the tellow light turns green the batteries are charged. You should get into the habit of charging the batteries each night if you use the chair daily. Just plug in the charger when you go to bed and turn it off when you get up. If you only use the chair a little then always store it fully charged and then charge it once a week if it hasn't been used. Hope this helps you

Nick yes I would say that the batteries are too low for the charger to pick up and charge thats why you are getting the green light. If Medicare purchased the chair then they will pay for repair you can contact the provider that sold you the chair and ask them to come out and repair the chair or you can call Repair Xpress @ 1-877-581-3733 or Roadrunner Mobility @ 1-800-467-2668 to have it repaired Hope this helps you

If you have an off-board charger that plugs into the joystick there are two lights on the charger one red(power on) and the other yellow (turns green when fully charged). Plug it into the chair and if the light is green then you have fully charged the batteries. Now if you have the on-board charger the charger meter on the rear of the chair will resd zero when fully charged. Hope this helps ya

on my m51 the lights on the charger are red and green the green is flashing what is this telling me.also should i have the controller on when i plu in the charger my chair i 6 years old battery replaced 2 years ago

When you connect the charger, if the light goes to red to green within a few minutes and the battery power does not last more than 1-2 hours or less, it may indicate that that the batteries will not take a charge anymore and need to be replaced. This can happen if the power chair has not been charged in a while or has been stored. Having the chair on or off while charging will not affect the charging process, but you ususally want it to be OFF.
Good luck!

Your batteries have shorted out internally. If you have a 2/10 Amp car battery charger, you may be able to bring them back to life like so...

- Switch the charger to 2 Amps
- if your chair uses two 12V batteries, connect the car charger across only one of them. If it uses four 6V batteries, connect across two. Be sure to match red to plus and black to minus!
- plug in the charger and watch the Ammeter meter. If it "pegs" and won't come down, the battery is toast. If it goes down to aboult half, you are on your way.
- When the meter gets down to about 1/4, switch to 10 Amps. The meter will again go up.
- When the meter drops to about 1/4 again, the battery is charged,
- Repeat above for the next battery.

This process will take several hours per battery. You don't have to remove the batties from the chair. However, it would be a good idea to do so in case a battery fails.

Good Luck !