[Q] Micromax Canvas 2 battery problem

Hi guys..
I have a Micromax Canvas 2 and there is a problem that irritates me a lot...
It is a charging problem...
When the charger gets connected... sometimes.. the charge led glows.. and charging icon is displayed on top.. but the battery is still discharging as after an hour.. when i saw.. the battery was down by 5%.. even when it was charging..
some times when i connect the charger.. the led glows ... but after few seconds it becomes off.. and the screen keeps on waking up all by itself... and during this part... the charge level neither moves up... nor moves down... i have to reboot the phone to get the real charge level... but in the first problem... rebooting doesn't help....
Can anybody out there help me?
I trust xda a lot....
P.S.
I am using Genuine Micromax Charger and it is 100% fine as i have tested it on other phones too...