Battery won't charge

Most likely you need new batteries. On the M51 powerchair the batteries are located in the center under the seat. Step 1 - remove the seat by pulling up on the swivel handle while lifting straight up, the seat weighs about 50 lbs. After removing the seat remove the center plastic cover by liting it off.
If you have an older model M51 the batteries will each have their own cover - to replace the batteries you will see several connectors that must be unplugged. The front and rear batteries each have different connectors so keep them separate. Lift out the batteries and follow the wiring for each replace the batteries. You will need 2 U1 batteries, available at sears or your local maedical equipment supply store ( Interstate has them too) Simply reverse the removal procedure to replace the batteries making sure you follow all the connections. - good luck
Tom

Change the Battery & Try

Hello Dot, You can have batteries regenerated, i had mine done from a scooter. There is no guarantee that it will be successful until tested and they got me around for a few months. I hope this was helpful to and all who are considering replacing batteries, best wishes. Colin

I have a Ranger X wheelchair and it won,t keep a charge. I bought batteries about 3 years ago. I think it is the connector. What do you think.