Samsung 1200y only power on with charger 100 % solution.

Samsung GT-E1200Y Phone Not Power On With Battery But When inserted Charger Phone Show Charging And Then Power Button Phone On And Working Fine.
But When Remove Charger Phone Show Battery Low And Just Power Off.
       

Samsung GT-S7562 Volume Button Ways Up-Down Keys Jumper Solution

Samsung GT-S7562 Volume Button Ways Up-Down Keys Jumper Solution