Question about Electric Mobility 4 Wheel Power Electric Motorized Wheelchair Scooter

1 Answer

Hi, fitted my scooter with two brand new 40 amp hr gel batteries ( 2 X 12v connected in series). It has an onboard charger which shows a red light when charger is connected to the mains. and red yellow and green lights for battery condition. Can you tell me if it's safe to charge these gel batteries with the onboard charger, bearing in mind that the scooter (which goes well) is probably way over 10 years old

Posted by Anonymous on

  • Anonymous Apr 07, 2011

    The charger is 24 v same as before, - I bought the scooter in good faith but the batteries gave out after about a week - (I had just charged them overnight) - the red charger light stayed on so I assume that it doesn't switch off automatically, the battery condition lights showed green. However one battery failed almost straight away and the other is weak so it just shut down.
    So I'm trying to decide if the onboard charger is overcharging or maybe producing too high amperage for this type of battery (gel), but if the batteries were just about stuffed, which is quite probable, - then I'VE been overcharged ! ;-0)

  • Anonymous Apr 07, 2011

    Not sure if my reply went through, here goes again, - Charged the old batteries overnight, battery state indicator showed green, red charger light didn't switch off, batteries failed just after I maneuvered it out of the garage, (1 completely shot, 1 a little weak), - i was just wondering if it was overcharged or if the onboard charger produced too high an amperage for this type of battery, but I think I may have been done in this deal ! - the batteries looked good but maybe not so good.
    What I'm really nervous about how I'm going to prevent my new batteries from suffering the same fate!!



1 Answer

Dan Kostella

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 30 Answers

What type and what voltage were the old batteries removed from the scooter?

Posted on Apr 07, 2011

Testimonial: "Thank you for the help, - the link didn't work but i'm slowly getting to understand things now."

  • Dan Kostella Apr 07, 2011

    As long as your on board charger is the same voltage as the batteries you should be fine. Assuming the charger worked with the old batteries and the new batteries are the same voltage, There should be no difference charging wet cells or gel cells.

  • Dan Kostella Apr 07, 2011

    It could be possible you could be over charging the batteries since your scooter is over 10 years old and most likely designed for wet cell charging. You may be safer picking up a small amperage charger that shuts off automatically. Commonly referred to as a Smart Charger. Here is a good article to read: Wheelchair Batteries/a/121/c/4



Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Red "check" light comes on and stays on when trying to charge scooter. Charger and scooter are old-purchased second hand, but batteries are new. What does the red light mean?

hi have got a make & model of scooter and the red light u refer to is it on the scooter or the charger............cheers

May 07, 2016 | Health & Beauty

1 Answer

Merit dma mobility scooter

hi, okay so you got a onboard charger ? right there should fuses fitted to either on of the three wires coming out of the charger ? unless the charger is itself is faulty ?


May 04, 2014 | Health & Beauty

1 Answer

Scooter wont go

It could be a battery connection, or maybe your key switch?
Or a connection problem between batteries and the motor controller
or the free wheel switch is on.

Apr 05, 2014 | Pride Mobility Products Celebrity X...

1 Answer

Is there fuses in the M91 Pronto Onboard charger

I had this exact same problem after having my M91 in the shop. The repair man said that the onboard charger was bad, so he sold me an offboard charger to charge through the arm. That didn't change anything. I finally took it apart myself and discovered that there was a cord leading from the onboard charger to the batteries that the repair person had left unplugged when he installed my new batteries.
What I'd thought was "fast draining" of the batteries was actually the batteries self-charging overnight (which they will do a little bit if you let them sit). Of course, this might not be your problem, but I'd say at least look at it as a possibility.

Aug 23, 2012 | Invacare Supply Group Invacare Pronto M91...

2 Answers

Controller has single flashing red light. how to correct fault ?

The batteries are low and need charging If after you charge and you still have the single red light then you need to replace the batteries

Dec 07, 2010 | Health & Beauty

1 Answer

I have brand new just fitted MK Gel batteries and a known working charger. When the charger is plugged in and charging a orange light should come on or green when fully charged. At the moment only the red...

David, If you are not getting the yellow light on the charger then you have a problem with the charger. What voltage are you getting at the batteries when charging? You can check the charger by removing the end plate where the lights are to see if there is a fuse on the output side of the charger. if there is check to see if the fuse is blown. There probably is a fuse on the other end but since the red light comes on it is good. If you plug the charger into the charger port and put your ear to it you should hear a hum coming from the charger. Hope this helps you

Sep 29, 2010 | Health & Beauty

1 Answer

Scooter dash lights flash up and down .were normaly they come on and stay at top .they just constantly run up and down ..batteries show on charger in boot .that its fully charged

Hi. Some scooters will show a pattern like this while the charger is operating, but when the charger is turned off it should stop. Some internal chargers have a relay that is activated while the charger is on to disable the scooter. Does the scooter operate properly after the charger is turned off? If not, then unplug the charger where it connects to the batteries inside the scooter and see if this helps. If this helps, you might need a new charger.
Good luck. Neil.

May 14, 2010 | Electric Strider Maxi 4 Wheel Mobility...

1 Answer

How long should you charge ur f&p voyager mobility scooter..after a trip of say 5-10 km ...i dont want to overcharge it and fry the new batteries.(2x 20 amp hr)

Hi. 20 amp hour batteries are rather small for one of these machines. You can fit up to 55 amp/hour batteries in these.
These machines have to have the programming changed for different charge rates for different batteries,e.g. Wet cell, sealed lead acid or gel cell.
These machines have a fully automatic charger that drops down to a float charge after the batteries have been charged. You cannot overcharge them. At the very least leave the machine on charge overnight after each use.
Batteries are built to do so many charge cycles, and the more they are discharged while using them the less cycles you will get. If you only use 25% of a batteries reserve you will get more cycles than if you use say 75% of a batteries reserve.
Good luck. Neil.

Feb 22, 2010 | Health & Beauty

Not finding what you are looking for?
Electric Mobility 4 Wheel Power Electric Motorized Wheelchair Scooter Logo

514 people viewed this question

Ask a Question

Usually answered in minutes!

Top Electric Mobility Health & Beauty Experts

Rob Hill
Rob Hill

Level 3 Expert

1414 Answers

The Knight
The Knight

Level 3 Expert

76466 Answers

Brad Brown

Level 3 Expert

18563 Answers

Are you an Electric Mobility Health and Beauty Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides