Question about Invacare Supply Group Invacare Pronto M91 Electric Wheelchair

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We initially charged a pair of new batteries with an external charger, and the chair ran for two days indoors light use. The low battery light came on and we then plugged in the on board charger for 10 hours. The green indicator was on when we unplugged the chair. The chair only ran for a few minutes and the low battery light was back on. The charger does not seem to be getting the full charge to the batteries.

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Before you assume the battery charger in the chair is not charging the batteries up fully have the batteries tested, u may have a defective battery, it doesn't happen often but believe it does happen, batteries like any other device can be defective from the box, also measure the voltage from the charger on board the chair, it should be a at least 2 volts over the total battery voltage, if not the chair's battery charger is defective.

Posted on Oct 01, 2009

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Posted on Jan 02, 2017

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