My son MX650 charged up last night, but when you put load on it will not move, lift rear tire off the ground seems to run full throttle, any thoughts?

Try the following:

• Secure unit; turn power on & with NO weight on the scooter, lift back end up and apply the throttle.
• If rear wheel spins freely, replace battery. If that does not work, continue on.
• Remove deck plate & unplug brake connector from Control Module. Secure unit; turn power on & apply throttle.

From their site

Question edited to add full make model (what it is).
Question moved from 'Health and Beauty' Category.

Sounds like either the charger isn't providing power at the connector, despite the green light, or that there is a battery fault. Contact the maker in Warranty Returns or start testing with a multimeter.

MX650 Dirt Rocket - Razor

https://razor.com > Products
Designed to generate more power for uphill and off-road conditions, the MX650 is ready to rumble. Made to hit dirt hard and fast, this supercross-inspired Razor ...

Rating: 4.5 · ‎19 reviews

This is one of the reviews

??????????4 out of 5 stars.· 2 years ago Great but......Back brake pads worn out within first 6 months as well as the battery. Second battery only lasted 4 months . HORRIBLE.. warranty I believe is like 30 days. Hard to replace battery. Literally have to take apart whole middle section of bike to remove it. Parts are extremely high in price.

https://www.google.com/search?q=mx650

..

Have the batteries load tested, I bet they have dead cells.

The E100 is a Kick Start scooter, the Rear Wheel has to be Spun for it to start. This scooter will not start from a motionless position.

Could be the battery.
Put the Scooter on a block so the rear tire is raised. Remove the standing plate to reveal the battery compartment.
Charge the Unit completely

1. Using a multimeter measure the voltage across the batteries. If the voltage is below 20 volts batteries are dead - Replace batteries.
2. Now for a running test. Turn the throttle and spin the rear tire to preform a kick start. Still measuring the voltage. If the voltage is Below 20 volts or if the voltage drops quickly batteries are dead - Replace batteries.
3. If the voltage is remaining around 24 volts for a long period - then you could have connector problems, clean and tighten all connectors.
I use a fiberglass electronic cleaning brush, as contact cleaners leave residue that interfere with electrical connections.

See my other posts for E100

you could have several different things wrong to cause this. Batteries not charged or can't charge due to bad one, bad motor, bad control module, or bad connection in wiring in one or more places. My grandson's mx650 worked fine for a dozen or so charge cycles but then started with intermediate starting problems. The power light was red and the full light would be green but switch to low amber light and back and forth on its own with no motor response when was on low amber light. He had been running it in wet conditions a couple of times and am sure that was what caused the problem which after taking the battery panels off and examining closely found what was wrong. This problem caused the intermediate starting and stopping and also would not let batteries charge right. I moved wiring while looking at the green light and amber light and found when touching the fuses connections is when lights would change. looked at all 3 30 amp fuses and 2 of them was burnt and pitted. You could see the ark in low light at the fuse when you operated the throttle, that turned out to be a good test to see what was wrong and what caused the fuses to become pitted. I sanded the fuses and clean since they were not blown and used dielectric grease in the connection and that seems to have fixed the problem. I also used the grease in some of the other connections for good luck. The bike charges now like is supposed to and the throttle lights are ok now, no more going from green to amber when wanting power. I would say the running in wet conditions is what started the problem and washing off the bike with a hose would do the same thing.

I need help! My son mx650 is charged, but won’t run. Put weight on it won’t move but lift rear tire off ground and runs full throttle

If the battery is gone(bad), sometimes it will show fully charged (volts are good).. but it has no amperage to "push" the voltage... It takes amperage to make the drifter move... (time for a new battery)... they don't last long...

Did you ever find out what the problem was?

The Main controllers always seem to be the problem on these quads. If you have a voltmeter you must check the batteries for a complete charge. You should read 24volt or around 24.60 vdc. If you have a full charge usaully 12-16 hrs by the charger supplied with the quad. Than check the output to the motor by disconnecting the motor wire and put your leads in the sockets and verify if you are getting voltage to the motor. Make sure you re-connected the battery before testing the controller output. You should see a varying voltage from 0-24 vdc when the throttle is turned. If you do not see anything at the motor lead and your batteries show charge. the controller is faulty or you have a bad connection. Un-plug and plug and connectors.

i have the same exact problem on 1 of my sons MX5s..i checked all 3 batteries and all that! you left out the controller clicks when the back wheels sapose to be moving ,it's not....so worse case scenerio batt,controller,motor,(650 This time)& throttle....So theres our blue print...lets hope it's just the batteries....!