Question about Razor MX650 Electric DirtBike

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Low power Hi Everyone, My son has a Razor MX 650. We replaced the module and it ran fine for a while but now it can not handle a load at all. The throttle is working. The batteries have never been replaced. Please give me some insight. I know that sometimes the throttle assembly is replaced when the module is replaced, I would prefer to just replace the batteries since I know they are older. Can I assume that since the throttle does work when the wheel is elevated that the throttle assembly is fine?

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Yes, your batteries need replacement, that will solve the problem.

Posted on Oct 21, 2013

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: handle doesn't work.

sounds like you dont have the extender in ..... happened to me i had t return it and get a new one or go get a new extender at a bike shop.... mine was missing when i purchased it,

Posted on Apr 24, 2009

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I Replaced the charger port on my Razor Mx500 Dirt Rocket and it ran fine and then just stop. The charger still indicates the batteries are charge but no power. Also I went to check the fuses and manu


Well if it's missing fuses obviously it won't run. When you turn it on does the green light on the throttle come on? if you have a voltmeter that would help. Are you sure the charger is good? if so you want to see 39 volts or so across all 3 batteries. Sometimes the switch contacts develop excessive resistance try shorting them with your screwdriver... if it runs you need a switch. can you hear the controller click when you turn the throttle?

May 21, 2014 | Razor MX500 Dirt Rocket

1 Answer

Battery razor e 100 replace


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.

The control module is simple and can be replaced with only a 24 volt relay without the kick start feature or Brake. If you want the brake then you can use two 24 volt relays still no Kick Start.

For those of you who know electrical, below is circuits I developed to replace the controller. This diagram will also give you a better understanding on the Razor circuit.

NOTE : This is not a schematic diagram of the Razor E100 Control Module. I designed this circuit. for my Great Nephew's Scooter.

1. The Brake is a normally closed switch that opens when you squeeze the Brake handle.
2. The throttle is two normally open switches that close when you turn the throttle.
3. The Kick Start circuit is described in the Diagram below.
4. The resistors values may need to be tweaked for best performance.
2a0b7f10-2c7e-4ffc-b7d7-ab4ce6d1545e.jpg

Apr 12, 2014 | Razor E100 Electric Scooter

2 Answers

ALSO IF ANYONE HAS ANY TROUBLE WITH RAZOR SCOOTERS WITH GETTING THEM TO GO,IT CAN BE THE TENSIONER,WHEELS,CHAIN,MOTOR,BATTERY,CHARGER,CONTROL MODULE,RESET BUTTON,LIGHT SWITCH,AND THROTTLE.IF IT WORKS,BUT...


I purchased my batteries on E-bay. Selected the highest rated with a Square trader warranty. Delivery time was 4 days, new was was going to ask.

Delivered to my house for$21.00 with both batteries, charged and ran perfectly. Extended Warranty was also offered but declined.

Batteries still working great 6-months latter.

Mar 08, 2014 | Razor E300 Scooter

1 Answer

My razor mx 500 motor won't turn.


I think you are talking about an electric motor on your bike . If the motor is New you may have a bad throttle switch . You can use an ohm meter to check the throttle switch . Connect the two leads of the ohm meter to the wires of the throttle switch ( dissconected) . As you turn the throttle the ohm reading should coraspond to how much you turn it .

Jan 15, 2018 | Razor MX500 Dirt Rocket

1 Answer

How to take razer apart to replace batteries.


My thanks to everyone who viewed my question. I feel so embarrassed now since I lo0cated the answer accidentally on my own. Here is the answer: When I opened the "trimmer" on the razor itself, lo and behold the answer was already there. It gave the exact answers I had been seeking. It said "For the HGX-1, it requires a PA-650 which delivers 12vdc @ 650mA. I found a compatible charging power transformer which delivers 12vdc @ 500mA and it worked fine in recharging my shaver. So, thanks to each of you for trying to locate the answer for me.

Jun 18, 2011 | Remington HGX-1 Electric Shaver

2 Answers

My back tire isn't spinning


WOW!!!WHAT A JOKE!MY KID SAVED $470 AND PURCHASED HIS MX 650 ONLY TO HAVE THE REAR FREEWHEEL BREAK THE FIRST WEEK RIDING IT.NND BY SEEING ALOT OF THE SAME PROBLEMWITH EVERYONE ELSE.RAZOR SHOULD' VE AT LEAST PUT A HEAVYDUTY ONE IN IT.OK PEOPLE LETS FIGURE IT OUT IF ANY ONE KNOWS AGOOD BEARING COMPANY,POST IT.MY KIDS BUMMED HE CANT RIDE IT

Dec 26, 2010 | Razor MX650 Electric DirtBike

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