The battery of my dad's friend's mobile MMX A111 doodle seems to have got damaged and he needs a replacement. He enquired in 2-3 shops and they said it would cost about 900 and may take 1 or 2 weeks to get, so he was asking me if something can be obtained quicker' , I saw 1-2 sites where it was priced similar, only one place, rediff where it was 500 or so. In addition I see people selling replacement battery of ERD brand for 500 saying high capacity' . are they even worth considering.. so looking for suggestions on this one...