Batteries fully charged. When traveling aprox. 300 feet full speed the batery indicator says the chair is out of power and slows to a crawl. after letting it rest for a few minutes the Indicator says batteries are full charged once again

Hi invest in a BATTERY LOAD TESTER .this will give u an accurate reading on the condition of you're batteries..cost on E/BAY aprox $35.cheers

With new, fully charged batteries, you can get a good 8 miles at full speed with a normal weight load on the chair. The chair goes about 4-5 mph, so an hour and a half or more at full speed on level terrain. Be sure to always recharge daily, keep the chair on the charger when not in use(batteries will die if you don't)and avoid running the batteries all the way down....try to stay in the top 2/3 charge range and you will get more life.

Sorry but it sounds like weak batteries. I would replace both batteries and after installation fully charge before use. Then ask Mom to use the chair more each day so you can charge them overnight each day for the next 20 days. It will break in the batteries and get them operating at 100%. If you can get her to use it more and charge it overnite and always put it up at full charge the batteries should last 2-3 years Hope this helps

Are your batteries fully charged? Are the batteries 2 years old or older? Even with a full charge older batteries will not generate amperage to make the chair go as fast as when new. Also the motors tend to slow down with age due to brushes wearing down. Now, if the batteries are new and the motors are not that old then you need to find a wheelchair provider that has a PP1 programmer and have then check the settings for forward speed etc. If the speed is not set to 100 then they can increase the forward speed to 100%. Hope this helps you

Make sure your speed indicator is as high as it will go. Make sure your tires are fully inflated and that nothing is wrapped around them that may be slowing you down. Make sure your batteries are fully charged (8-10 hours). If all of this checks OK, make sure that your batteries will take a full charge. If the power chair has been sitting idle for a while the batteries may be damaged and not take a full charge which means you will not get full power.
Another problem may be the controller, if you got your power chair second hand. The last owner may have made the technician make changes to the controller to make it run slower overall if they could not control it. It can only be changed back by the technician.
Good luck!

How long have you noticed the decrease in speed? Are you charging the batteries regularly? Have you checked your air pressure in your drive tires?
If the batteries are getting old or the power chair has been stored for a while, the batteries may not be taking a full charge. If your speed indicator is showing full like always but the power chair is not responding like it used to, it may be a battery issue.
As you operate the power chair, listen for noise and pay attention to see if there is any vibration, this may indicate a mechanical problem that is causing power drain.
If not, your power chair may still be within normal parameters, just not "new out of the box" anymore. Make sure that you decrease your speed when going up inclines to avoid excess wear on the motors.
Good luck!

take a voltage indicator, and put the wires of the tool on the batery. each wire one each pole of the batery. Black to black, red to red. Turn on the engine, and increase the idle speed until aprox. 6000 rpm. the voltage indicator should indicate voltage from aprox. 12 Volts to aprox 15 volts. if the volt are not increasing with the engine rpm, is mostly a charging relay issue.
At the idle speed, the voltmeter should indicate minimum 12,5 -13 volts. If not, the same issue.
The test should be made with the battery charged and in great working condition.

Contact your retailer and explain this to them. They are in the best position to help you with this matter.

If the batteries are new and fully charged - 10 - 12 miles.

The lights are working, the batteries aren't. Red indicates power to the charger, and it should be on all the time. Green indicates a full charge, usually. If one or both of the batteries are totally dead, then the charger can't "see" them, and you will get a green light, but you will have dead batteries.

All power chairs use sealed, deep-cycle batteries. Deep cycle batteries, are designed for slow amperage dischare over a long time period, unlike a car battery that throws out a lot of amperage for turning the motor over. That's called "cold-cranking amps", and you can load-test a car battery to see if it will throw out a ton of amps for long enough to start a car. There is NO load tester made, or possible for a deep-cycle battery. A load test requires a 24-hour time period, and a complicated formula.

So, your course is to get some fresh, gel-sealed-batteries. You will need type U-1. Specify, gel-sealed-batteries when you go to the battery shop. A fresh set should get the chair up to about 12-16 mile range, which would be about 3-4 hours running constantly at high speed. Good luck.