Question about Electric Mobility 4 Wheel Power Electric Motorized Wheelchair Scooter

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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

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  • willdo 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)

  • willdo 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!!

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  • 21 Answers

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

Posted on Apr 07, 2011

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  • 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:http://www.spinlife.com/spintips/details... Wheelchair Batteries/a/121/c/4

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