HI, any Pros here ? im new , got a bike which starts and stops ..TNX!

#1
hi

bought a foldeble bike (with one of Thos bulky grey batteries) 2nd hand.

long story short ,
bike goes 4 minutes ok , then get week ,then looses energy (the energy metter dont even show anything)
as if , complete lose of Power.

10 minutes later ,without any Power , it gets the Power back and starts again .
and the same repeat.

usesless..
Engine ?
Electric issue ?
battery ?
all ?

TNX!
 

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