Is it ok if I leave the charger plugged in after my razor 650 is fully charged?

With that being said, be advised that leaving the screwdriver on the charger after fully charged may overcharge it and also shorten its battery life. Therefore, it is recommended to unplug the unit from the charger after charging.

Question edited for clarity.
Question moved from Razor health and beauty category.

It is a known issue, but it may also be that you haven't depleted enough power for it to require a charge?

https://www.google.com/search?q=razor+mx500+charger+stays+green

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yes sounds like the control module, you can always jump the batteries directly to the motor to make sure that the motor is ok

the Razor MX350 will accept a charge if powered on or off, charging time is 8 hours, if the green light shows before this time still leave it plugged in as it may not be reading right.

It sounds like the battery pack needs replaced. You will find the correct battery type at shaveroutlet.com. See link below. You will need to order 2 batteries

http://shaveroutlet.com/shaver-replacement-parts/shaver-replacement-battery-aa-nimh-p-108.html

To replace, you will need to remove the back cocer by removing the two screws. Take off back cover to access inside. For easier replacement, it is sometimes suggested that you use a modified installation technique. This is to break the tabs off of the old batteries rather than unsoldering them from the circuit board. This allows the old batteries to be removed but leaves the tabs attached to the circuit board. You can then solder the tabs from the new batteries to the old existing tabs

You didn't specify how old you model is.
Generally I would say, the battery is failed.
You might try taking it to whereever you bought it and politely ask for a replacement. Its also a good idea not to leave these in cars during sub freezing weather.

the unit uses power EQUAL to what it is being charged with, when plugged into the USB.
you need to leave it on the DC (cigarette lighter) charger overnight to charge it fully, or use an AC plug for the Motorola Razor (min-USB) to charge it in the house

the steady red light showing when in charger shows that
it is charging. the blinking red light when taken out of
charger or turned on and off means it is not fully charged.
leave it in charger till red light turns green.

uh...the charger's supposed to have a DC output