Question about Invacare Pronto M51 Power Wheelchair
Have already replaced 2 new batteries and charger. What do I test next ?
Does your chair turn off automatically in about 10 minutes. Sometimes customers make the request to the tech to set the chair to never turn off because it is an inconvenience to have to turn it back on. As you have experienced, its a much greater inconvenience to have a dead battery. There are also longer settings up to 1 hr. The batteries may be fine, you are just running them down because the chair is on when not in use. If this is the case, you need to contact a tech who has a programmer that can change this setting. I had one customer that had a similar issue as yours but also had performance issues. Riding on a flat surface the chair would do fine, but when he would start to go up an incline, the battery level would start to drop as the motor would torque. I found that he had a bare wire rubbing against the frame and it would not affect the performance until it required more power from the batteries. Look at all the wiring if you are able and see if it is intact. The worst case may be that you have a bad wire that has a break in it and will do the same thing as the bare wire scenario. One more thing you can look at is the battery connections. If they are loose, you will see alot of problems. Bad charge, low performance, wont climb inclines. Everything has to be tight and in good condition to get the best performance. Check all connectors. I have seen melted connectors do the same thing. If you have any melted components, get the unit serviced. You don't want a fire under your seat.
Posted on Jan 29, 2015
Something in the wiring could be draining your battery's when chair is not being used,try unhooking a battery cable if your able to and see if your batterys are lasting longer if they are then obvious something draining your battery,if you have a gauge check it at night when your finish using your chair,then check it the next day when your ready to use it and see if the gauge is at the same reading.just a thought,hope it helps,if you can't take off the cable or aren't sure then don't do it I don't want you to get hurt.
Posted on Nov 15, 2014
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Posted on Jan 02, 2017
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