I have a keeway 125 superlight, I am new to bike riding.

[Richard Anelay]

I charged the battery but the battery remained dead so I jump started the bike. The reves shot up to 5000 and did not come down so I turned of the bike. New to motorbike riding and have no idear what to do next. 

[Bender]

Charge battery or replace if it's dead and won't hold a charge, start from there one problem at a time.

[RideWithStyles]

Agree with bender.

I know a few 125s have had a bit of a jump in tech recently but they dont take much to start up with a small single cylinder. Me and the misses laughed so hard when we saw the battery of her 125... not much bigger that a few AA batterys lol.

Id be asking myself (or u) in why the battery is sooo dead?
Might stop it from happening  again, does it have a alarm? Did u leave the heated grips on???

 

Just to be clear it Wont be the battery that holds the revs pacifically, that will be either the cable's, the sensor, or the ecu if its that high technical of a 125 which ill be surprised about.

if its holding the revs id be first looking at the inside throttle cables, are they moving freely, is there a kink? 
just be careful how u just start the,  power pack etc can fry the little ecus or the loom if ur not careful.

 

just for info. 

is it a lead acid or a lithium battery? Dont recharge a lithium battery with a normal charger, it wont charge it properly and even damage it.

if its lithium and its gone below 9 or even 6 volts its goosed so dont bother trying to bring it back... its dead Jim...need to buy a new battery.

i know the fad is to have lithium but if your bike never with one from the factory then u need to make sure the charging system onthe bike is designed to cope with one!!